Three-minute eyelid closure to improve corneal curvature readings

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This single-site interventional protocol enrolls adults with a keratometry quality index flagged as "warning" and compares keratometry measurements before and after a three-minute period of eyelid closure. The procedure is noninvasive: standard preoperative corneal curvature (keratometry) is recorded, the participant closes the eyelid for three minutes, and keratometry is repeated to detect changes in measurement quality. Patients with severe corneal disease, recent ocular surgery, pregnancy or inability to close the eyelid are excluded. The trial is conducted at the Vienna Institute for Research in Ocular Surgery and focuses on a simple, low-risk maneuver to stabilize the tear film and reduce measurement error.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Age 18 or older
* Written informed consent
* Keratometry quality index "warning"

Exclusion Criteria:

* Severe corneal conditions that may compromise corneal integrity (such as corneal scarring, etc.)
* Pregnancy (pregnancy test will be taken in women of reproductive age), nursing women
* Ocular surgery in the study eye in the three months preceding the study
* Inability of visual fixation (e.g. in patients with nystagmus)
* Inability of eyelid closure (e.g. in patients with facial nerve paralysis)

Where it's running

• Vienna Institute for Research in Ocular Surgery (VIROS), Department of Ophthalmology
  Vienna, State of Vienna, Austria Recruiting

Study contacts

• Study coordinator: Andreas Schlatter, MD
• Email: office@viros.at
• Phone: +43 1 91021 57564

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.