24 results on '"Iester A"'
Search Results
2. Motor skills in children affected by strabismus
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Roberta Ansaldo, Giuseppe Giannaccare, Maria Musolino, Michele Iester, Carlo Enrico Traverso, Marco Pellegrini, and Aldo Vagge
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Male ,medicine.medical_specialty ,genetic structures ,developmental coordination disorder ,Audiology ,Behavioural disorders ,developmental coordination disorder, amblyopia ,Article ,NO ,03 medical and health sciences ,0302 clinical medicine ,Surveys and Questionnaires ,medicine ,Humans ,In patient ,Child ,Strabismus ,Motor skill ,amblyopia ,Vision, Binocular ,business.industry ,Mean age ,Cognition ,Control subjects ,eye diseases ,Motor Skills Disorders ,Ophthalmology ,Italy ,Motor Skills ,Child, Preschool ,030221 ophthalmology & optometry ,Female ,business ,Binocular vision ,030217 neurology & neurosurgery - Abstract
OBJECTIVES: To compare motor skills in patients with infantile strabismus and age and sex-matched control subjects aged 5–11 years. METHODS: Motor performances were assessed by the Italian version of Developmental Coordination Disorder Questionnaire 2007 (DCDQ) in children with infantile strabismus and age and sex-matched control subjects. Patients affected by specific neurological, cognitive and behavioural disorders were excluded from the study. RESULTS: There were 43 patients included in the study, 23 in the strabismus group (14 males, 9 females, mean age 7.5 ± 2.0 years) and 24 in the control group (14 males and 10 females, mean age 7.2 ± 1.7 years. The overall DCDQ score was significantly lower in children with strabismus compared with control subjects (58.7 ± 11.3 vs. 74.2 ± 1.5; P
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- 2020
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3. Point-wise correlations between 10-2 Humphrey visual field and OCT data in open angle glaucoma
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Cirafici, Paola, primary, Maiello, Guido, additional, Ancona, Chiara, additional, Masala, Alessandro, additional, Traverso, Carlo Enrico, additional, and Iester, Michele, additional
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- 2020
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4. Motor skills in children affected by strabismus
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Vagge, Aldo, primary, Pellegrini, Marco, additional, Iester, Michele, additional, Musolino, Maria, additional, Giannaccare, Giuseppe, additional, Ansaldo, Roberta, additional, and Traverso, Carlo E., additional
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- 2020
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5. Point-wise correlations between 10-2 Humphrey visual field and OCT data in open angle glaucoma
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Cirafici, Paola, Maiello, Guido, Ancona, Chiara, Masala, Alessandro, Traverso, Carlo Enrico, and Iester, Michele
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Purpose: Optical Coherence Tomography (OCT) is a powerful instrument for helping clinicians detect and monitor glaucoma. The aim of this study was to provide a detailed mapping of the relationships between visual field (VF) sensitivities and measures of retinal structure provided by a commercial Spectral Domain (SD)-OCT system (RTvue-100 Optovue). Methods: Sixty-three eyes of open angle glaucoma patients (17 males, 16 females, and mean age 71 ± 7.5 years) were included in this retrospective, observational clinical study. Thickness values for superior and inferior retina, as well as average values, were recorded for the full retina, the outer retina, the ganglion cell complex, and the peripapillary retinal nerve fiber layer (RNFL). RNFL thickness was further evaluated along eight separate sectors (temporal lower, temporal upper, superior temporal, superior nasal, nasal upper, nasal lower, inferior nasal, and inferior temporal). Point-wise correlations were then computed between each of these OCT measures and the visual sensitivities at all VF locations assessed via Humphrey 10-2 and 24-2 perimetry. Lastly, OCT data were fit to VF data to predict glaucoma stage. Results: The relationship between retinal thickness and visual sensitivities reflects the known topography of the retina. Spatial correlation patterns between visual sensitivities and RNFL thickness along different sectors broadly agree with previously hypothesized structure–function maps, yet suggest that structure–function maps still require more precise characterizations. Given these relationships, we find that OCT data can predict glaucoma stage. Conclusion: Ganglion cell complex and RNFL thickness measurements are highlighted as the most promising candidate metrics for glaucoma detection and monitoring.
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- 2021
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6. Efficacy and safety of fixed combinations of latanoprost/timolol and dorzolamide/timolol in open-angle glaucoma or ocular hypertension
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Miglior, S., Grunden, J. W., Kwok, K., Denis, P, Mouriaux, F, Peigne, G, Ridings, B, Rigal, D, Christ, T, Deuker, H, Hamacher, T, Hoffmann, M, Jelinek, C, Scherzer, Ml, Karabatsas, K, Konstas, A, Kozombolis, V, Tsilimbaris, M, Carassa, R, Delle Noci, N, Iester, M, Mastropasqua, L, Miglior, S, Nardi, Marco, Chatila, A, Heijl, A, Lindblom, B, Vancea, L., Miglior, S, Grunden, J, and Kwok, K
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Male ,Intraocular pressure ,genetic structures ,fixed combination ,Visual Acuity ,open-angle glaucoma ,Ocular hypertension ,Glaucoma ,Timolol ,Thiophenes ,chemistry.chemical_compound ,Dorzolamide ,medicine ,Humans ,Latanoprost ,Antihypertensive Agents ,Intraocular Pressure ,Aged ,Sulfonamides ,business.industry ,Dorzolamide/Timolol ,Middle Aged ,timolol ,medicine.disease ,eye diseases ,Ophthalmology ,dorzolamide ,latanoprost ,chemistry ,Anesthesia ,Prostaglandins F, Synthetic ,ocular hypertension ,Drug Therapy, Combination ,Female ,sense organs ,Visual Fields ,Latanoprost/timolol ,business ,Glaucoma, Open-Angle ,medicine.drug - Abstract
Aims To compare intraocular pressure (IOP) reductions with fixed-combination (FC) latanoprost/timolol once daily in the evening vsFC dorzolamide/timolol twice daily. Methods This evaluator-masked, multicentre, controlled clinical trial randomized subjects with primary open-angle glaucoma or ocular hypertension with IOP insufficiently responsive to Β-blocker therapy (screening IOP>21 and
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- 2009
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7. Retinal nerve fibre layer measurements and optic nerve head analysis in multiple sclerosis patients
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F. Cioli, M. Papadia, Antonio Uccelli, G. L. Mancardi, Fabio Bandini, Michele Iester, and Giovanni Calabria
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Adult ,Male ,Retinal Ganglion Cells ,medicine.medical_specialty ,Multiple Sclerosis ,genetic structures ,Optic Disk ,Nerve fibre layer ,Scanning laser polarimetry ,Nerve fiber ,diagnosis/pathology/physiopathology ,methods ,chemistry.chemical_compound ,Computer-Assisted ,pathology/physiopathology ,Ophthalmology ,medicine ,Humans ,Prospective Studies ,Evoked Potentials ,Retina ,Cell Death ,business.industry ,Multiple sclerosis ,Neuromyelitis Optica ,Adult, Algorithms, Cell Death, Cross-Sectional Studies, Evoked Potentials ,Visual, Female, Humans, Male, Middle Aged, Multiple Sclerosis ,pathology/physiopathology, Neuromyelitis Optica ,diagnosis/pathology/physiopathology, Ophthalmoscopy ,methods, Optic Disk ,pathology, Prospective Studies, Retinal Ganglion Cells ,pathology, Scanning Laser Polarimetry ,methods, Signal Processing ,Signal Processing, Computer-Assisted ,Retinal ,Middle Aged ,medicine.disease ,eye diseases ,Surgery ,Ophthalmoscopy ,Cross-Sectional Studies ,medicine.anatomical_structure ,chemistry ,Scanning Laser Polarimetry ,Signal Processing ,Optic nerve ,Evoked Potentials, Visual ,Head (vessel) ,pathology ,Female ,Visual ,business ,Algorithms - Abstract
To verify whether scanning laser polarimeter with the new variable corneal compensation algorithm (GDx VCC) and scanning laser ophthalmoscopy (Heidelberg Retina Tomograph (HRT)) allow measuring retinal ganglion cell loss in patients with multiple sclerosis (MS).We enrolled 23 MS patients with a history of previous demyelinating monocular optic neuritis. Examination included visual evoked potentials (VEPs), scanning laser ophthalmoscopy, and scanning laser polarimeter. HRT was performed to assess optic nerve head (ONH) shape, while GDx VCC was used to evaluate the retinal nerve fibre layer thickness (RNFLt) around the ONH. Statistical analysis was performed comparing results obtained for each eye with the available normative database and with the unaffected fellow eye.When the affected eye group was compared to the fellow-eye group, a significant (P0.05) difference was found for few GDx VCC parameters. In contrast, no significant correlation was observed between clinical assessment and imaging techniques when the normal database of HRT and GDx VCC was used. A significant association was observed between VEP latency and some GDx VCC parameters.Our results suggested that scanning laser polarimetry could detect loss of ganglion cells following demyelinating optic neuritis, but further studies are needed.
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- 2007
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8. Motor skills in children affected by strabismus
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Vagge, Aldo, Pellegrini, Marco, Iester, Michele, Musolino, Maria, Giannaccare, Giuseppe, Ansaldo, Roberta, and Traverso, Carlo E.
- Abstract
Objectives: To compare motor skills in patients with infantile strabismus and age and sex-matched control subjects aged 5–11 years. Methods: Motor performances were assessed by the Italian version of Developmental Coordination Disorder Questionnaire 2007 (DCDQ) in children with infantile strabismus and age and sex-matched control subjects. Patients affected by specific neurological, cognitive and behavioural disorders were excluded from the study. Results: There were 43 patients included in the study, 23 in the strabismus group (14 males, 9 females, mean age 7.5?±?2.0 years) and 24 in the control group (14 males and 10 females, mean age 7.2?±?1.7 years. The overall DCDQ score was significantly lower in children with strabismus compared with control subjects (58.7?±?11.3 vs. 74.2?±?1.5; P?<?0.001). Children with strabismus and no stereopsis showed a lower DCDQ score compared with those with normal stereopsis (50.8?±?9.5 vs. 67.3?±?4.8; P?<?0.001). Conclusion: Motor skills are reduced in children with strabismus compared with control subjects. Strabismus and lack of binocular vision are factors potentially contributing to developmental coordination disorder.
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- 2021
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9. Quality of life in patients with early, moderate and advanced glaucoma
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M. Zingirian and Michele Iester
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Male ,medicine.medical_specialty ,Eye disease ,Glaucoma ,Visual disability ,Standard deviation ,Pattern standard deviation ,Quality of life ,Sickness Impact Profile ,Surveys and Questionnaires ,Ophthalmology ,Activities of Daily Living ,Linear regression ,medicine ,Humans ,In patient ,Aged ,business.industry ,Age Factors ,Middle Aged ,medicine.disease ,Linear Models ,Quality of Life ,Physical therapy ,Female ,Visual Fields ,business ,Glaucoma, Open-Angle - Abstract
Purpose To evaluate the quality of life in glaucomatous patients using two different questionnaires: the medical outcomes study 36-item short-form health survey (MOS SF-36) and Viswanathan et al’s questionnaire and to compare these two questionnaires. Methods Seventy-seven patients with glaucoma were consecutively selected. Two force-choice questionnaires were administered to each patient. Viswanathan et al’s questionnaire was related to visual disability and the second was related to the quality of life from the MOS 36-item short-form health survey. Both questionnaires were evaluated among all the considered patients and the results were compared. Then the questionnaire which did the best evaluation was used to test the quality of life in three different subgroups based on the mean deviation of the worse eye. Mann–Whitney non parametric test and Spearman’s r coefficient were used and a P value less than 0.05 was considered to be statistically significant. A linear regression model was used. Results In the entire group (n = 77) the Mean Deviation (MD) was −6.5 ± 6.8 dB (mean ± standard deviation) and Corrected Pattern Standard Deviation (CPSD) was 4.7 ± 4.1 dB. The score of the Viswanathan et al’s questionnaire was 8.3 ± 2.4, while MOS SF-36 score ranged from 60.5% to 100% (mean score %). A significant (P < 0.0001) correlation was found between the score of the Viswanathan et al’s questionnaire and MD (r = 0.79), Pattern Standard Deviation (PSD) (r = −0.68) and CPSD (r = −0.61). Conclusion Viswanathan et al’s questionnaire was more useful than MOS SF-36, both for the score and for the velocity to use. Furthermore Viswanathan et al’s questionnaire was more significantly correlated to visual field MD.
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- 2002
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10. Improvement of the ocular surface using hypotonic 0.4% hyaluronic acid drops in keratoconjunctivitis sicca
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Gabriella J Orsoni, Paolo Mangiafico, Gianni Gamba, Monica Taffara, Sebastiano Giuffrida, Michele Iester, and Maurizio Rolando
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Adult ,Male ,medicine.medical_specialty ,Eye disease ,medicine.medical_treatment ,Keratoconjunctivitis Sicca ,Glaucoma ,chemistry.chemical_compound ,Adjuvants, Immunologic ,Ophthalmology ,Hyaluronic acid ,Rose bengal ,Humans ,Multicenter Studies as Topic ,Medicine ,Hyaluronic Acid ,Aged ,business.industry ,Epithelium, Corneal ,Eye drop ,Middle Aged ,medicine.disease ,eye diseases ,Staining ,Treatment Outcome ,Hypotonic Solutions ,chemistry ,Vital stain ,Tears ,Tonicity ,Female ,sense organs ,Ophthalmic Solutions ,business - Abstract
Background The ocular surface changes of keratoconjunctivitis sicca (KCS) could be the result of the effect of an altered tear film on the epithelial environment. Purpose To evaluate the possibility of improving the environmental conditions of the ocular surface by lowering tear osmolarity, increasing tear film volume and stabilising the tear film. Also, to study the effect of such an improvement on the epithelial cells of the ocular surface. Methods One hundred and thirty-five patients with a diagnosis of KCS were treated on a randomised basis with either unpreserved hypotonic 0.4% hyaluronic acid (HHA) eye drops or 0.3% hydroxypropylmethylcellulose plus 0.1% Dextran 70 (HPMC) eye drops 6 times a day for 60 or 90 days. In all patients a Schirmer I test, break-up time (BUT), ocular surface staining with 1% Bengal Rose, or 2% fluorescein, as well as subjective symptoms, were recorded before and 15, 30 and 60 days after the beginning of the study. Patients were divided into three subgroups and the effect of the treatment was studied using three different techniques: the tear ferning test, conjunctival impression cytology and tear osmolarity measurement. Results Improvements in BUT, vital staining, Schirmer I and symptoms were recorded in both groups of treatment, with significant differences for patients treated with 0.4% HHA. On day 60, 30 min after installation: tear ferning patterns changed from 100% pathological (types III–IV) to 93% physiological (types I–II) in the 0.4% HHA group and from 100% pathological to 78% physiological in the 0.3% HPMC group (p < 0.01 between groups). Tear osmolarity shifted from 353 ± 23 to 305 ± 6 mosmolA in the 0-4% HHA group and from 346 ± 15 to 336 ± 8 mosmol/l in the 0.3% HPMC group (p < 0.001 between groups). On day 90, the impression cytology score improved from 1.2 to 1.9 in the 0.4% HHA group while it did not change in the 0.3% HPMC group (p < 0.05 between groups). Conclusion In KCS appropriate treatment with a hypotonic 0.4% HHA tear substitute can change the tear environment and results in improvement of the epithelial conditions of the ocular surface.
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- 2000
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11. Retinal nerve fibre layer measurements and optic nerve head analysis in multiple sclerosis patients
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Iester, M, primary, Cioli, F, additional, Uccelli, A, additional, Papadia, M, additional, Bandini, F, additional, Mancardi, G L, additional, and Calabria, G A, additional
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- 2007
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12. Corneal thickness and visual field damage in glaucoma patients
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Papadia, M, primary, Sofianos, C, additional, Iester, M, additional, Bricola, G, additional, Mete, M, additional, and Traverso, C E, additional
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- 2006
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13. Observer interpretation variability of peripapillary flow using the Heidelberg Retina Flowmeter
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Iester, M, primary, Ciancaglini, M, additional, Rolle, T, additional, and Vattovani, O, additional
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- 2005
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14. Quality of life in patients with early, moderate and advanced glaucoma
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Iester, M, primary and Zingirian, M, additional
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- 2002
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15. New TonoPen XL: Comparison with the Goldmann tonometer
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Iester, Michele, primary, Mermoud, Andre, additional, Achache, Farid, additional, and Roy, Sylvain, additional
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- 2001
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16. Improvement of the ocular surface using hypotonic 0.4% hyaluronic acid drops in keratoconjunctivitis sicca
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Iester, Michele, primary, Orsoni, Gabriella J, additional, Gamba, Gianni, additional, Taffara, Monica, additional, Mangiafico, Paolo, additional, Giuffrida, Sebastiano, additional, and Rolando, Maurizio, additional
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- 2000
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17. Comparison between relative dispersion analysis of high-pass resolution perimetry and standard threshold perimetry
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Iester, Michele, primary, Altieri, Michele, additional, Capris, Paolo, additional, Zingirian, Mario, additional, and Traverso, Carlo E, additional
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- 2000
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18. A comparative study of computerised visual field testing and optic disc morphometric parameters in the follow-up of primary open angle glaucoma
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Macri, Angelo, primary, Rolando, Maurizio, additional, Corallo, Guido, additional, Iester, Michele, additional, Verrastro, Giuseppe, additional, and Calabria, Giovanni, additional
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- 1998
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19. Differences in central corneal thickness between the paired eyes and the severity of the glaucomatous damage.
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Iester, M, Telani, S, Frezzotti, P, Manni, G, Uva, M, Figus, M, and Perdicchi, A
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CORNEA , *GLAUCOMA , *OPHTHALMOSCOPY , *INTRAOCULAR pressure , *T-test (Statistics) - Abstract
PurposeTo evaluate whether a difference in central corneal thickness (CCT) between the paired eyes could be associated to worse glaucoma in the thinner cornea eye.MethodsFrom 16 different glaucoma centres, at least 50 glaucomatous patients were saved on the Italian Glaucoma Register. Eight hundred and sixteen glaucomatous patients were found in the register. CCT, ophthalmoscopic cup/disc ratio, mean deviation (MD), pattern SD (PSD), and intraocular pressure (IOP). The difference (Δ) between the paired eyes was calculated for all the considered parameters and two subgroups were created on the basis of ΔCCT. Because the difference between the two eyes could be positive or negative, the absolute value of Δ was considered for all the measurements. Three different ΔCCT cutoffs were selected: 10, 15, and 20 μm. Student's t-test was used to compare the subgroups.ResultsWhen the entire group was divided in two subgroups using 20 μm as ΔCCT cutoff, no significant difference was found for ΔIOP (−0.38±2.53 (mean±SD) mm Hg and −0.07±2.35 mm Hg, respectively) between the two subgroups. Significant (P<0.001) difference was found for ΔMD (6.58±7.30 and 3.14±4.22 dB, respectively), ΔPSD (3.92±4.01 and 2.16±2.57, respectively), and ΔC/D (0.11±0.14 and 0.08±0.11, respectively) between the two subgroups. No significant correlation was found between ΔCCT and the other parameters.ConclusionThe ΔCCT between the two eyes could be associated to a worse glaucoma in the thinner cornea eye. [ABSTRACT FROM AUTHOR]
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- 2012
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20. Retinal nerve fibre layer measurements and optic nerve head analysis in multiple sclerosis patients.
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Iester, M., Cioli, F., Uccelli, A., Papadia, M., Bandini, F., Mancardi, G. L., and Calabria, G. A.
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MULTIPLE sclerosis ,EVOKED potentials (Electrophysiology) ,OPTIC neuritis ,NERVE fibers ,OPTIC nerve ,SCANNING laser ophthalmoscopy ,RETINAL ganglion cells - Abstract
PurposeTo verify whether scanning laser polarimeter with the new variable corneal compensation algorithm (GDx VCC) and scanning laser ophthalmoscopy (Heidelberg Retina Tomograph (HRT)) allow measuring retinal ganglion cell loss in patients with multiple sclerosis (MS).Patients and methodsWe enrolled 23 MS patients with a history of previous demyelinating monocular optic neuritis. Examination included visual evoked potentials (VEPs), scanning laser ophthalmoscopy, and scanning laser polarimeter. HRT was performed to assess optic nerve head (ONH) shape, while GDx VCC was used to evaluate the retinal nerve fibre layer thickness (RNFLt) around the ONH. Statistical analysis was performed comparing results obtained for each eye with the available normative database and with the unaffected fellow eye.ResultsWhen the affected eye group was compared to the fellow-eye group, a significant (P<0.05) difference was found for few GDx VCC parameters. In contrast, no significant correlation was observed between clinical assessment and imaging techniques when the normal database of HRT and GDx VCC was used. A significant association was observed between VEP latency and some GDx VCC parameters.ConclusionsOur results suggested that scanning laser polarimetry could detect loss of ganglion cells following demyelinating optic neuritis, but further studies are needed.Eye (2009) 23, 407–412; doi:10.1038/sj.eye.6703013; published online 9 November 2007 [ABSTRACT FROM AUTHOR]
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- 2009
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21. Corneal thickness and visual field damage in glaucoma patients.
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Papadia, M., Sofianos, C., Iester, M., Bricola, G., Mete, M., and Traverso, C. E.
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VISUAL fields ,EYE diseases ,EYE examination ,CORNEA diseases ,CORNEA examination ,GLAUCOMA - Abstract
PurposeTo verify whether there was a significant correlation between central corneal thickness (CCT) and visual field damage in patients with primary open angle glaucoma (POAG).MethodsA total of 99 eyes with POAG were consecutively recruited. Patients were classified as glaucomatous based on visual field and optic nerve head damage. All underwent applanation tonometry, Humphrey perimetry, and measurement of CCT with ultrasonic pachymetry. Based on CCT value, the sample was split at the mode in two groups (group 1<535 μm, n=49; group 2≥535 μm, n=50).ResultsEntire cohort: mean CCT 554 μm±45.03; mean deviation (MD) −6.68 dB±7.32; pattern standard deviation (PSD) 5.33±3.75; intraocular pressure (IOP) 17.91±4.16 mmHg with treatment. Group 1: CCT was 504.8 μm±30.8; MD −9.01 dB±8.72; PSD 6.38±3.99; IOP 18.02 mmHg±4.66. Group 2: mean CCT 574.6 μm±35.03; MD −4.39 dB±4.70; PSD 4.25±3.19; IOP 17.79 mmHg±3.57. A significant difference was found between the two groups for both MD and PSD. Linear regression analysis showed a significant correlation between CCT and PSD (P<0.001).ConclusionsOur data show that patients with a thinner cornea had a worse MD and PSD. As a thinner CCT causes an underestimation of the true IOP, there may be a delay in the diagnosis of POAG or an inadequate estimate of the clinical course despite apparently desirable IOP applanation readings.Eye (2007) 21, 943–947; doi:10.1038/sj.eye.6702350; published online 28 April 2006 [ABSTRACT FROM AUTHOR]
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- 2007
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22. Detection of glaucomatous optic nerve head by using Heidelberg topographic maps.
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Iester, M., Zanini, M., Vittone, P., and Calabria, G.
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OPTIC nerve , *TOPOGRAPHIC maps , *OPTIC disc , *VISUAL fields , *GLAUCOMA - Abstract
PurposeTo evaluate the capacity of a new topographic map analysis to detect abnormal optic discs from healthy ones in a new cohort of subjects.Patients and methodsOnly one eye was chosen randomly from each subject included in the study. In total, 20 normal eyes with a normal visual field, an IOP of <22 mmHg and no history of glaucoma in their family, and 20 glaucomatous eyes with an abnormal visual field and an open angle were selected. All the subjects were examined with the Heidelberg Retina Tomograph (HRT, Heidelberg Engineering GMBH, Heidelberg, Germany) and Humphrey Perimeter, program 30-2 (Humphrey Instrument, Inc., San Leandro, CA, USA). Topographic maps analysis was performed to each HRT optic nerve head image. Sensitivity, specificity, and diagnostic precision were calculated.ResultsWhen the topographic map analysis was applied to the group, a sensitivity of 80%, a specificity of 75%, and a diagnostic precision of 77.5% were obtained.ConclusionUsing the topographic map analysis, the HRT capacity to differentiate normal optic discs from those with glaucoma was similar to those already published in the literature, but using this technique there is no input from the observer to draw the contourline and reference plane is not necessary.Eye (2007) 21, 609–613. doi:10.1038/sj.eye.6702285; published online 17 February 2006 [ABSTRACT FROM AUTHOR]
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- 2007
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23. Observer interpretation variability of peripapillary flow using the Heidelberg Retina Flowmeter.
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Iester, M., Ciancaglini, M., Rolle, T., and Vattovani, O.
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RETINAL blood vessels , *BLOOD flow , *FLOW meters , *DOPPLER effect , *OPTIC disc , *GLAUCOMA , *INTRAOCULAR pressure - Abstract
PurposeTo evaluate the intraobserver and interobserver reproducibility of the automatic full field perfusion image analysis (AFFPIA) program on Heidelberg Retina Flowmeter (HRF) derived perfusion images in a multicentre study group.MethodsA total of 10 subjects were consecutively recruited in the study. One eye was randomly selected for each patient. Blood flow was assessed by HRF and flow measurements were analyzed by using the AFFPIA program. AFFPIA calculates the Doppler frequency shift and the haemodynamic variables: flow for each pixel. Intraobserver and interobserver reproducibility was calculated for AFFPIA program. The retinal blood flow was calculated in the superior and inferior section, furthermore, each section was divided into three parts: the temporal area, the nasal, and the rim area, as for software, but only the temporal and nasal areas were considered in this study. The blood flow and the area considered were evaluated for each part.ResultsWhen the intraobserver and intraimage reproducibility was studied, the coefficient of variation ranged from 0.4 to 1.9%. When the interobserver and intraimage reproducibility was studied, the retinal blood flow coefficient of variation ranged from 0.52 to 3.30% for the supero-temporal area, from 0.13 to 2.67% for the inferotemporal area, from 0.15 to 2.75% for the supero-nasal area, and from 0.04 to 5.65% for the infero-nasal area.ConclusionOur results with AFFPIA showed an interobserver coefficient of variation of retinal blood flow measurements always less than 6% in both temporal and nasal areas. No significant difference was found among the four observers for the flow measurements.Eye (2006) 20, 1246–1253. doi:10.1038/sj.eye.6702086; published online 28 October 2005 [ABSTRACT FROM AUTHOR]
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- 2006
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24. Point-wise correlations between 10-2 Humphrey visual field and OCT data in open angle glaucoma
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Chiara Ancona, Carlo Enrico Traverso, Guido Maiello, Paola Cirafici, Alessandro Masala, and Michele Iester
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Male ,Retinal Ganglion Cells ,medicine.medical_specialty ,Open angle glaucoma ,genetic structures ,Nerve fiber layer ,Glaucoma ,Article ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Nerve Fibers ,Optical coherence tomography ,Ophthalmology ,Humphrey visual field ,medicine ,Humans ,Aged ,Retrospective Studies ,Retina ,medicine.diagnostic_test ,business.industry ,Retinal ,Middle Aged ,medicine.disease ,eye diseases ,Visual field ,medicine.anatomical_structure ,chemistry ,Outcomes research ,030221 ophthalmology & optometry ,Optic nerve diseases ,Visual Field Tests ,Female ,sense organs ,Visual Fields ,business ,030217 neurology & neurosurgery ,Glaucoma, Open-Angle ,Tomography, Optical Coherence - Abstract
Purpose Optical Coherence Tomography (OCT) is a powerful instrument for helping clinicians detect and monitor glaucoma. The aim of this study was to provide a detailed mapping of the relationships between visual field (VF) sensitivities and measures of retinal structure provided by a commercial Spectral Domain (SD)-OCT system (RTvue-100 Optovue). Methods Sixty-three eyes of open angle glaucoma patients (17 males, 16 females, and mean age 71 ± 7.5 years) were included in this retrospective, observational clinical study. Thickness values for superior and inferior retina, as well as average values, were recorded for the full retina, the outer retina, the ganglion cell complex, and the peripapillary retinal nerve fiber layer (RNFL). RNFL thickness was further evaluated along eight separate sectors (temporal lower, temporal upper, superior temporal, superior nasal, nasal upper, nasal lower, inferior nasal, and inferior temporal). Point-wise correlations were then computed between each of these OCT measures and the visual sensitivities at all VF locations assessed via Humphrey 10-2 and 24-2 perimetry. Lastly, OCT data were fit to VF data to predict glaucoma stage. Results The relationship between retinal thickness and visual sensitivities reflects the known topography of the retina. Spatial correlation patterns between visual sensitivities and RNFL thickness along different sectors broadly agree with previously hypothesized structure–function maps, yet suggest that structure–function maps still require more precise characterizations. Given these relationships, we find that OCT data can predict glaucoma stage. Conclusion Ganglion cell complex and RNFL thickness measurements are highlighted as the most promising candidate metrics for glaucoma detection and monitoring.
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