Related Experiment Videos
A comparative evaluation of Readables to single vision lenses
Journal of the American Optometric Association
|September 1, 1991
Summary
New Readables lenses, a special type of progressive addition lens (PAL), significantly improve vision for presbyopic patients compared to traditional single vision reading lenses. Patients overwhelmingly preferred Readables for better intermediate and near vision clarity.
Area of Science:
- Ophthalmology
- Optometry
- Vision Science
Background:
- Emmetropic presbyopes often use single vision lenses for near/intermediate tasks.
- These lenses restrict the range of clear vision, particularly in advanced presbyopia.
Purpose of the Study:
- To evaluate patient perception and functional performance of Readables lenses versus single vision reading lenses.
Main Methods:
- A crossover design, randomized controlled clinical trial was conducted.
- Participants compared Readables (PAL emphasizing intermediate/near) with single vision reading lenses.
Main Results:
- Readables were preferred 25:2 over single vision lenses.
- Readables demonstrated significantly better lens performance measures.
Conclusions:
- The specialized design of Readables lenses offers significant functional benefits for presbyopic individuals.
- Patient appreciation for the enhanced visual range provided by Readables is notable.