Comparing viewing range of two progressive lenses in older adults
Part of Eyes & vision clinical trials.
This study tests two types of progressive lenses (which help you see at different distances) to see how they affect your field of vision. It may help you find glasses that work better for daily tasks like reading and using a computer.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You are between 40 and 65 years old (typical for presbyopia, but not stated explicitly)
- Your glasses or contact lens prescription is within a mild range: sphere between -4.00 and +4.00, astigmatism (blurriness) up to 1.00
- You have good vision (0.8 or better on a standard eye chart) with or without correction
- Your nose-to-pupil distance is about 31 mm (within a small range) for each eye
- You have not had cataract surgery and do not wear progressive contact lenses
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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