Visual Acuity in Contact Lens Wearers
- 1 October 2001
- journal article
- research article
- Published by Ovid Technologies (Wolters Kluwer Health) in Optometry and Vision Science
- Vol. 78 (10), 726-731
- https://doi.org/10.1097/00006324-200110000-00012
Abstract
The difference between high- and low-contrast visual acuity provides a sensitive indicator of vision loss in ocular disease; however, the effect of refractive error correction on this difference is still debated. High- and low-contrast visual acuity was measured in 116 rigid gas permeable contact lens wearers, 51 spectacle wearers, and 50 soft contact lens wearers with habitual and best correction. Twenty-nine of the soft contact lens wearers reported that they wore disposable contact lenses (discarded on a monthly or more frequent basis), whereas the other 21 soft contact lens wearers wore traditional soft contact lenses. Rigid gas permeable contact lens wearers had statistically worse high-contrast habitual visual acuity than spectacle wearers (Tukey-Kramer, p = 0.0075). Traditional soft contact lens wearers had significantly worse low-contrast visual acuity compared with all other groups (Tukey-Kramer, p Rigid gas permeable contact lens wearers had statistically worse habitual high-contrast visual acuity compared with spectacle wearers, but no difference was present under best-corrected conditions. We hypothesize that rigid gas permeable contact lens wearers were not wearing their optimal correction habitually. Traditional soft contact lens wearers had significantly worse low-contrast visual acuity. They also had a larger difference between their best-corrected high- and low-contrast visual acuity scores compared with rigid gas permeable contact lens wearers.Keywords
This publication has 11 references indexed in Scilit:
- Visual Acuity Repeatability in Keratoconus: Impact on Sample SizeOptometry and Vision Science, 1998
- Effects of Luminance, Contrast, and Blur on Visual AcuityOptometry and Vision Science, 1995
- Corneal Light Scattering and Visual Performance in Myopic Individuals With Spectacles, Contact Lenses, or Excimer Laser Photorefractive KeratectomyAmerican Journal of Ophthalmology, 1993
- Low contrast visual acuity changes in human immuno-deficiency virus (HIV) infectionEye, 1992
- Soft Contact Lens Visual Performance: A Multicenter StudyOptometry and Vision Science, 1991
- High and Low Contrast Acuity and Clinical Contrast Sensitivity Tested in a Normal PopulationOptometry and Vision Science, 1989
- Low Contrast Charts Effectively Differentiate between Types of BlurOptometry and Vision Science, 1986
- AN ANALYSIS OF VISUAL PERFORMANCE WITH SOFT CONTACT LENS AND SPECTACLE CORRECTIONOphthalmic and Physiological Optics, 1985
- Low-contrast letter charts in early diabetic retinopathy, ocular hypertension, glaucoma, and Parkinson's disease.British Journal of Ophthalmology, 1984
- CHANGES IN THE CONTRAST SENSITIVITY FUNCTION INDUCED BY CONTACT LENS WEAROptometry and Vision Science, 1975