Document Detail

Visual performance of two simultaneous vision multifocal contact lenses.
MedLine Citation:
PMID:  23252854     Owner:  NLM     Status:  In-Data-Review    
PURPOSE: To evaluate and compare the visual performance of two simultaneous vision multifocal contact lenses (CLs).
METHODS: In this cross-over study design 20 presbyopic subjects were fitted with two different simultaneous vision multifocal CLs (the PureVision Multifocal Low Add and Acuvue Oasys for Presbyopia) in random order. After 1 month, binocular distance visual acuity (BDVA) under photopic (85 cd/m(2) ) and mesopic (3 cd/m(2) ) conditions, binocular near visual acuity (BNVA), binocular distance contrast sensitivity function (CSF) under photopic and mesopic conditions, binocular near CSF and defocus curve were measured. Subjects were then refitted with the alternative correction and the procedure was repeated.
RESULTS: Mean BDVA under photopic conditions was similar for the Acuvue Oasys for Presbyopia and PureVision Multifocal Low Add: 0.01 ± 0.08 and 0.00 ± 0.08 logMAR, respectively (P = 0.45). Under mesopic conditions the values of BDVA were 0.20 ± 0.58 and 0.11 ± 0.09 logMAR, respectively (P = 0.005). Mean BNVA was 0.20 ± 0.05 and 0.15 ± 0.08 logMAR for the Acuvue Oasys and PureVision Low Add, respectively (P = 0.06). Binocular distance CSF testing revealed no statistically significant differences between lenses under photopic, mesopic or near conditions. Both lenses provided a comparable intermediate visual acuity.
CONCLUSIONS: Both simultaneous vision multifocal CLs provided adequate distance visual quality under photopic and mesopic conditions, and better visual acuity was provided under mesopic conditions for the Purevision lens. Both lenses provided adequate visual performance at intermediate distance, but the near visual acuity appears to be insufficient for early presbyopes who require a moderately demanding near visual quality.
David Madrid-Costa; Santiago García-Lázaro; César Albarrán-Diego; Teresa Ferrer-Blasco; Robert Montés-Micó
Related Documents :
7237694 - Excitation, conduction, and reflection of impulses in isolated bovine and serum cardiac...
22990294 - Generalization of visuomotor adaptation depends on the spatial characteristic of visual...
23273424 - Perceptual response and information pick-up strategies within a family of sports.
24152544 - Tms over v5 disrupts motion prediction.
24220284 - Impedance matched thin metamaterials make metals absorbing.
1945714 - Effects of speed and accuracy of exertion of force on the relationship between force ou...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)     Volume:  33     ISSN:  1475-1313     ISO Abbreviation:  Ophthalmic Physiol Opt     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2012-12-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8208839     Medline TA:  Ophthalmic Physiol Opt     Country:  England    
Other Details:
Languages:  eng     Pagination:  51-6     Citation Subset:  IM    
Copyright Information:
Ophthalmic & Physiological Optics © 2012 The College of Optometrists.
Optometry Research Group, Optics Department, University of Valencia, Valencia, Spain.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Tool to estimate optical metrics from summary wave-front analysis data in the human eye.
Next Document:  Line of sight of a heterocentric astigmatic eye.