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Purpose: To evaluate whether strabismus surgery improves the learning performance - calculation, reading and drawing - of school-aged children., Methods: In a case-control study, patients between the ages of 7 and 10 years with horizontal strabismus, recommended for surgical correction, were prospectively included. Reading, calculating and drawing abilities were evaluated before and 3 months after corrective strabismus surgery using standardized tests. Cases were compared to control patients: patients with a surgical indication postponed due to the COVID lockdown., Results: Forty-two operated patients and 42 controls between the ages of 7 and 10 years with horizontal strabismus were included. The average reading speed was 65.8 words per minute pre-operatively compared to 80.6 words per minute post-operatively (p = 0.0038). The average drawing score was 71.1 pre-operatively compared to 84.3 post-operatively (p = 0.012). The average calculation score was 3.2 pre-operatively compared to 3.4 post-operatively (p = 0.363). Improvement given by strabismus surgery was confirmed avoiding the learning effect by comparison with the control group. The improvements observed were more significant in the youngest patients and esotropia., Conclusions: This study highlights that strabismus surgery significantly improved the children's reading fluency and drawing task execution. These encouraging data should be taken into account when considering the indications for strabismus surgery., (© 2023 Acta Ophthalmologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.)

Ocular paraneoplastic syndromes are rare conditions that can affect any part of the eye at any age. Thus, every ophthalmologist should be familiar with their management, as some of them may reveal severe, life-threatening conditions. These consist overwhelmingly of neuro-ophthalmological manifestations, affecting the optic nerve (paraneoplastic optic neuritis), retina (paraneoplastic retinopathy) or neurological pathways generating eye movements (saccadic intrusion, oculomotor palsy, nystagmus...); occasionally, they involve the anterior segment, orbit or uveal tract. As some of these manifestations appear to be quite common and non-specific, any systemic or especially neurologic comorbidities should increase suspicion. Treatment relies first on oncologic management, and then often more targeted therapy for the associated immune involvement., (Copyright © 2021 Elsevier Masson SAS. All rights reserved.)

Despite the advantages that robot-assisted surgery can offer to patient care, its use in ophthalmic surgery has not yet progressed to the extent seen in other fields. As such, its use remains limited to research environments, both basic and clinical. The technical specifications for such ophthalmic surgical robots are highly challenging, but rapid progress has been made in recent years, and recent developments in this field ensure that the use of this technology in operating theatres will soon be a real possibility. Fully automated ocular microsurgery, carried out by a robot under the supervision of a surgeon, is likely to become our new reality. This review discusses the use of robot-assisted ophthalmic surgery, the recent progress in the field, and the necessary future developments which must occur before its use in operating theatres becomes routine., Competing Interests: The authors declare that they have no conflict of interest., (Thieme. All rights reserved.)

Purpose: The sense of vision is responsible for 90% of the information obtained by the motorist. Improvement in binocular visual acuity (VA) and visual field (VF) achieved after strabismus surgery could have beneficial effects on driving. Our study sought to identify functional improvements (VA and VF) and improvements in driving ability following strabismus surgery., Methods: In a prospective cohort study, the following parameters are analyzed before and 3 months after strabismus surgery: simulated driving performance (including eye movements and actions on vehicle control), binocular VA, binocular VF, and self-confidence during driving., Results: Twenty patients participated in the study. The mean preoperative logMAR binocular VA and stereopsis do not significantly differ from the postoperative. The mean Esterman VF score increases from 91.3 (±17.2) preoperatively to 96.9 (±13.9) postoperatively ( P = 0.045). The mean self-confidence directed at driving scores decreases from 20.5 (±10.3) points before surgery to 11.0 (±6.0) points after surgery ( P < 0.001). The distance at which the road signs are identified is significantly higher after surgery. The average speed of the vehicle and the speed near the targets (30 m) increase significantly after strabismus surgery. A significant decrease in ocular movements near targets is also observed. The number of brake pedal depressions and the rate of brake pedal depressions slightly decrease after surgery., Conclusions: This study demonstrates the potential beneficial effects of strabismus surgery on driving ability, with significant improvements in self-confidence during driving, VF, and driving on a simulator., Translational Relevance: This was the first study to use a driving simulator in strabismus., Competing Interests: Disclosure: D. Derhy, None; S. Lithfous, None; C. Speeg, None; D. Gaucher, None; O. Despres, None; A. Dufour, None; T. Bourcier, None; A. Sauer, None, (Copyright 2020 The Authors.)

The regular use of cannabis generates pronounced cognitive disorders, especially in users who begin before the age of 15-16. However, less is known about the impact of regular cannabis on visual function, especially in the case of early onset. Cannabinoid receptors (CB1) are expressed in areas of the visual system, like the thalamus and primary cortex, which might originate sensory disorders. Hence, we measured contrast sensitivity (CS) in three groups, i.e. cannabis users with late onset of cannabis use (after 16 years old), cannabis users with early onset". We used a constant method which allowed us to control for biased responses. Stimuli were presented at high and low spatial frequencies and in both static and dynamic conditions (8Hz). As contrast sensitivity is measured behaviorally based on an explicit response and could thus be impacted by attentional or vigilance disorders, participants' attention and vigilance were carefully monitored by means of the D2 test, CPT-AX for attention and pupillography for vigilance. Cannabis users with early onset were significantly impaired only at low spatial frequency. This effect was independent of response bias, vigilance and attention. These results show for the first time that early cannabis use impacts contrast sensitivity at low spatial frequency., (Copyright © 2017 Elsevier B.V. and ECNP. All rights reserved.)

Purpose: This study aims to investigate the feasibility of pterygium surgery using the DaVinci Si HD robotic surgical system, and to describe a porcine model for pterygium surgery and evaluate its usefulness., Methods: The pterygium models were constructed using enucleated pig eyes and cold cuts. Robotically-assisted pterygium surgeries in nonliving biological pterygium models were performed using the DaVinci Si HD robotic surgical system. Twelve models were prepared, and 12 pterygium excision and conjunctival autografts were performed., Results: The DaVinci system provided the necessary dexterity to perform delicate ocular surface surgery and robotic tools were safe for the tissues. The mean duration of the surgical procedures was 36 minutes. There were no intraoperative complications and no unexpected events., Conclusions: Robotic-assisted pterygium surgery is technically feasible for porcine eyes using the DaVinci Si HD robotic surgical system. The pterygium model that we describe could be of interest for surgical training., Translational Relevance: Little research has been done in robotic microsurgery. Animal experimentation will allow the advantages of robotic-assisted microsurgery to be identified, while underlining the improvements and innovations necessary for clinical use.

We report the case of a 38-year-old woman with a history of migraine who experienced an association of recurrent unilateral facial pain and Pourfour du Petit syndrome. The episodes occurred for between a few seconds and up to 3 minutes up to 6 times a day mimicking short-lasting unilateral neuralgiform headaches with cranial autonomic symptoms. No lesional cause was found and the use of topiramate led to a nearly complete disappearance of the episodes. This new entity raises the question of a novel autonomic dysfunction in short-lasting unilateral neuralgiform headaches with cranial autonomic symptoms or an unexpected presentation of migraine., (© 2013 American Headache Society.)

Background: Neuromyelitis optica (NMO) is an inflammatory disease associated with optic neuritis and myelitis. Recently, several studies showed that optical coherence tomography (OCT) could be an interesting method for the evaluation of disease severity; however, to date there are no studies with a longitudinal follow-up of visual function in NMO. The aim of this study was to assess the ability of OCT to evaluate the progression of visual dysfunction in NMO., Patients and Methods: A group of 30 NMO patients (thus, 60 eyes), comprised of 20 women and 10 men with a mean age of 43.7 +/- 12.3 years, were prospectively evaluated clinically and by a whole neuro-ophthalmological work-up, including: visual acuity (VA), fundoscopy, visual evoked potential (VEP), visual field (VF) and optical coherence tomography (OCT). All patients were tested at baseline (after a mean disease duration of 6.1 years) and after a mean time of follow-up of 18 months (range: 12-36 months)., Results: Mean VA was similar at the two evaluation times (0.77 +/- 0.36 versus 0.77 +/- 0.35). The mean VF defect decreased slightly, but the difference was not significant (-5.9 +/- 1.3 dB versus -5.3 +/- 1.3 dB). In contrast, the mean retinal thickness seen on OCT decreased from 87.4 +/- 23.3 µm to 79.7 +/- 22.4 µm (p = 0.006). These modifications were only observed in eyes with a past or a recent history of optic neuritis (-15.1 µm; p < 0.001) and not in eyes without any history of optic neuritis (-2.4 µm; not significant). Also, they occurred independently of the occurrence of relapses (n = 13) and especially optic neuritis episodes; however, the number of optic neuritis episodes was low (n = 5)., Conclusion: OCT seems to be a more sensitive test than VA or VF for monitoring ophthalmological function in NMO and it seems to be helpful for the detection of infra-clinical episodes in patients with a past history of optic neuritis. Our results suggest that this easily performed technique should be used in the follow-up of NMO, but complementary studies are warranted to confirm its interest at an individual level.

Purpose: To report the results and safety of sutureless intrascleral haptic fixation in traumatized eyes and to compare this procedure with retropupillary iris-claw intraocular lens (IOL) fixation., Setting: University Hospital of Strasbourg, Strasbourg, France., Design: Interventional case series., Methods: Patients with traumatic cataract and severely damaged capsular bags were divided into 2 groups (Group 1: intrascleral IOLs [Acrysof MN60 AC]; Group 2: retropupillary iris-claw IOLs [Verisyse]). The main outcome was the final visual acuity. The surgically induced astigmatism (SIA) was calculated by the vectorial method., Results: Twenty-six eyes of 23 patients were studied, 8 eyes in Group 1 and 18 eyes in Group 2. The mean follow-up was 14 months. There was no difference in corrected distance visual acuity (CDVA) at the time of the surgery (P>.05). The mean CDVA (logMAR) was 1.68 ± 1.15 (SD) preoperatively and 0.55 ± 0.9 postoperatively in Group 1 (P = .03) and 1.11 ± 1.13 and 0.32 ± 0.47, respectively, in Group 2 (P = .003). The final CDVA was not different between groups (P>.05). The mean SIA was 1.91 ± 1.66 diopters (D) in Group 1 and 2.74 ± 1.92 D in Group 2 (P>.05). No intraoperative complications occurred in Group 2; a haptic broke in Group 1. Macular edema occurred in both groups., Conclusions: Sutureless intrascleral IOLs corrected posttraumatic aphakia. The SIA was comparable between groups. This procedure should be considered after trauma when other implantation techniques are not possible., (Copyright © 2013 ASCRS and ESCRS. Published by Elsevier Inc. All rights reserved.)

Introduction: Oculomotor deficiencies in multiple sclerosis (MS) are frequently characterized by internuclear ophthalmpoplegia or isolated abduction or adduction palsies. Complete unilateral conjugate gaze paralysis and the "one and a half" syndrome are rare. Complete bilateral horizontal gaze paralysis has been exceptionally reported., Observation: Here, we describe an unusual oculomotor paralysis as a suspected first event of MS. A 24-year-old woman with an uneventful medical history presented for sudden onset of binocular diplopia. On examination, abduction and adduction saccades were impossible, whereas vertical eye saccades and convergence were normal. Oculocephalic reflex failed to improve horizontal eye movement. No nystagmus and no other sign of brainstem dysfunction were observed. Visual acuity was 4/10 in the right eye and 6/10 in the left eye. A sign of Marcus Gunn was noted in the right eye. Blood samples and cerebrospinal fluid were normal, no oligoclonal bands were detected. Visual evoked potentials were significantly impaired in both eyes and argued for bilateral optic neuritis. Brain MRI scans showed white matter T2-hypersignal abnormalities, which fulfill Barkhof criteria for MS. A small symmetric lesion was noted in the posterior part of the medial pontine tegmentum. As a first episode of MS was suspected, treatment with methylprednisolone 1000 mg/d for 3 days was started, and was followed by complete recovery of eye movements and visual acuity after 3 weeks., Discussion: To our knowledge, only two cases of complete horizontal bilateral ophthalmoplegia have been reported in the literature. Both were associated with peripheral facial nerve palsy as a first event in MS. In our case report, we describe for the first time a complete bilateral horizontal ophthalmoplegia with no other brainstem dysfunction. By analogy with the "one and a half" syndrome, such complete horizontal gaze paralysis could be named a "one and one" syndrome and seems to be specifically related to a first event of MS., (Copyright © 2010 Elsevier Masson SAS. All rights reserved.)

Background: Neuromyelitis optica (NMO) is an inflammatory disease with combined features of optic neuritis and myelitis. This pathologic entity may induce severe disability, including visual loss and paraplegia. Other than clinical follow-up, there is no marker for severity of the disease., Objectives: To evaluate the use of optical coherence tomography (OCT) in NMO and to determine whether this new technique could be a good marker of axonal loss in NMO., Design: Cross-sectional study., Participants: Thirty-five patients with NMO or at a high risk for NMO (having optic neuritis or myelitis and who are positive for NMO antibody) were prospectively studied. Fifteen healthy individuals served as control subjects., Main Outcome Measure: All patients underwent a complete ophthalmologic evaluation, including OCT, funduscopy, and visual field, visual acuity, and visual evoked potential testing. Expanded Disability Status Scale scores were assessed but without the visual data. Correlations between the visual test results and demographic or clinical characteristics were evaluated., Results: Optical coherence tomography and visual field data were available for only 32 patients because 3 patients were blind. The mean retinal nerve fiber layer thickness was significantly reduced in patients with NMO compared with controls (P < .001). We found good correlation between the OCT results and visual field testing. We also found weak correlation between OCT results and both visual acuity and visual evoked potential latencies. We did not find any correlation between OCT results and age, sex, or disease duration. In contrast, retinal nerve fiber layer thickness was closely correlated with the Expanded Disability Status Scale score (P < .001)., Conclusions: Optical coherence tomography results are significantly altered in patients with NMO. Optical coherence tomography is easy to perform, and the results are well correlated with visual acuity and visual field findings. It could be considered a marker of axonal loss because we found good correlation between OCT and the Expanded Disability Status Scale score. These preliminary results will need to be confirmed in a longitudinal prospective study.

Moebius syndrome is unusual and associates facial diplegia with a failure of lateral movements, and seems to be of nuclear or supranuclear origin, appearing during foetal life. Association with somatic malformations are frequent such as those of Poland syndrome. Surgery's envisaged when palsy of lateral movements is associated with deviation of the eyes.

Discussion of the indications of the correction of post-injury aphakia intraocular lens. The immediate infectious danger by perforation, the unavoidable inflammatory reactions, the potential retinal risk and the so often alteration of the posterior chamber by synechias, are leading to advice, in the majority of cases, the secondary anterior chamber lens implantations.

Description of interocular accommodative disparities about 3 cases of young patients, whose occupations require an excellent stereopsis in near vision. Is is a paresis, an asynergy or a constitutional asymmetry? In order to delimit this pathology, the accommodative power of each eye has been measured on a reference population including 100 subjects aged 20 to 35 years. The suitable correction of this anomaly, allows an exact compensation and the recovery of a normal functional comfort.

Exploration of macular function in patients opaque media has been performed routinely with Helium-Neon Laser interferometry for more than 5 years. Our results in patients with cataract, macular diseases, retinal detachment and functional amblyopia are reported. Accurate correlations, overestimations and underestimations are differentiated with special emphasis on overestimations.