Which reading glasses give the best view? new study puts three lens designs to the test

NCT ID NCT07617090

Ongoing Knowledge-focused Sponsor: University of Seville Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study compares three types of progressive lenses to see which provides the widest clear vision at distances from 4 meters down to 25 centimeters. About 26 presbyopic participants will test each lens in a random, double-blind order. The goal is to help eye doctors choose the best lens for people who need sharp vision at both arm's length and close up.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: progressive addition lenses (PALs)
What this could lead to: If successful, this study could help eye doctors recommend the best lens design for people who need clear vision at arm's length and close up.
What could go wrong: This is a small, early-stage study with only 26 participants, so results may not apply to everyone. The main risk is temporary eye strain from testing.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

presbyopia

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

PRESBYOPIA

Contacts and locations

Locations

Pharmacy school, University of Seville

Seville, Sevilla, 41012, Spain

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Other studies related to the condition(s) this trial covers.