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Visual acuity in hard and soft contact lens wearers: a comparison
Journal of the American Optometric Association
|March 1, 1978
Summary
Soft contact lenses may decrease visual acuity more often than hard contact lenses. This study compared visual acuity in eyes fitted with spectacles, hard contact lenses, and soft contact lenses.
Area of Science:
- Ophthalmology
- Optometry
- Vision Science
Background:
- Contact lenses are widely used for vision correction.
- Assessing visual acuity with different contact lens types is crucial for patient outcomes.
Purpose of the Study:
- To compare visual acuity changes in eyes fitted with spectacles, hard contact lenses, and soft contact lenses.
- To determine if soft contact lenses result in a greater percentage of visual acuity decrease compared to hard contact lenses.
Main Methods:
- Visual acuity was measured in 75 eyes with spectacles, hard contact lenses, and hard contact lenses plus overrefraction.
- Similar measurements were conducted on 75 eyes wearing soft contact lenses.
Main Results:
- A decrease in visual acuity was observed in some eyes with both hard and soft contact lenses.
- A higher percentage of eyes showed a decrease in visual acuity when wearing soft contact lenses compared to hard contact lenses.
Conclusions:
- Soft contact lenses may be associated with a greater risk of visual acuity reduction compared to hard contact lenses.
- Further research may be needed to understand the mechanisms behind visual acuity changes with different contact lens materials.