Testing progressive glasses for reading and distance in presbyopia
Part of Eyes & vision clinical trials.
This trial compares two types of progressive glasses to see which works better for seeing at arm's length and up close. It is for people with presbyopia who have relatively mild vision problems.
Summary written for real people, not researchers, by Clin2.
Who can take part
- Your distance vision needs to be between -4.00 and +4.00, with no more than 1.00 diopter of astigmatism.
- You need to see 20/25 or better at a distance, either with no glasses or with regular contact lenses.
- The distance between your pupils must be about 31 mm, give or take 2 mm.
- You cannot be currently using progressive contact lenses.
- You cannot have had cataract surgery or have an artificial lens implant.
- You cannot have eye movement problems, restricted side vision, or conditions like strabismus or nystagmus.
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
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