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Visual outcomes and subjective experience after bilateral implantation of a new diffractive trifocal intraocular lens
- Source :
-
Journal of Cataract & Refractive Surgery . Mar2013, Vol. 39 Issue 3, p343-349. 7p. - Publication Year :
- 2013
-
Abstract
- Purpose: To assess clinical outcomes and subjective experience after bilateral implantation of a diffractive trifocal intraocular lens (IOL). Setting: Midland Eye Institute, Solihull, United Kingdom. Design: Cohort study. Methods: Patients had bilateral implantation of Finevision trifocal IOLs. Uncorrected distance visual acuity, corrected distance visual acuity (CDVA), and manifest refraction were measured 2 months postoperatively. Defocus curves were assessed under photopic and mesopic conditions over a range of +1.50 to −4.00 diopters (D) in 0.50 D steps. Contrast sensitivity function was assessed under photopic conditions. Halometry was used to measure the angular size of monocular and binocular photopic scotomas arising from a glare source. Patient satisfaction with uncorrected near vision was assessed using the Near Activity Visual Questionnaire (NAVQ). Results: The mean monocular CDVA was 0.08 logMAR ± 0.08 (SD) and the mean binocular CDVA, 0.06 ± 0.08 logMAR. Defocus curve testing showed an extended range of clear vision from +1.00 to −2.50 D defocus, with a significant difference in acuity between photopic conditions and mesopic conditions at −1.50 D defocus only. Photopic contrast sensitivity was significantly better binocularly than monocularly at all spatial frequencies. Halometry showed a glare scotoma of a mean size similar to that in previous studies of multifocal and accommodating IOLs; there were no subjective complaints of dysphotopsia. The mean NAVQ Rasch score for satisfaction with near vision was 15.9 ± 10.7 logits. Conclusions: The trifocal IOL implanted binocularly produced good distance visual acuity and near and intermediate visual function. Patients were very satisfied with their uncorrected near vision. Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 08863350
- Volume :
- 39
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Journal of Cataract & Refractive Surgery
- Publication Type :
- Academic Journal
- Accession number :
- 85875356
- Full Text :
- https://doi.org/10.1016/j.jcrs.2012.09.017