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Dry eye may throw off cataract surgery measurements, study warns

NCT ID NCT07525336

Knowledge-focused Sponsor: Assiut University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at whether dry eye disease makes it harder to calculate the right lens power for cataract surgery. Researchers will compare 100 patients with and without dry eye to see if those with dry eye have less accurate lens measurements. The goal is to find out if treating dry eye before surgery could improve vision results.

What this could mean

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

Active substance
dry eye disease optimization (procedure)
What this could lead to
If successful, this could show that treating dry eye before cataract surgery leads to more accurate lens power calculations and better vision after surgery.
What could go wrong
This is an observational study, not a treatment trial, so it won't directly test a new therapy. Results may not apply to all patients with dry eye or cataracts.

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

Study facts

What this study's own registry entry says, in plain language.

Participants

About 100 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Apr 2026

An estimate. Start dates often move.

Expected to finish

Apr 2029

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

The study population will consist of adult patients aged 40 years and older diagnosed with cataract and scheduled for phacoemulsification surgery at Assiut University Hospital.

Ages

40 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Age equals to or above 40 years old * cataract patient * suitable for phacoemulsification * clear corneal media Exclusion Criteria: * previous corneal surgery * advanced glaucoma * corneal pathology (keratoconus, scarring) * retinal disease affecting vision * irregular astigmatism * contact lens use within the last 2 weeks

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Conditions

The condition(s) this trial relates to.

cataract dry eye syndrome

As listed by the trial registrant

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

Cataract (post-operative cataract surgery follow-up) Dry eye disease (DED)

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  2. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

More trials for these conditions

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