Change of Retinally-Induced Aniseikonia in Patients With Epiretinal Membrane After Vitrectomy

Epiretinal membrane is common disease, affecting 5~10 % incidence over 60 years old population. It reduce visual acuity, cause metamorphopsia. In the past, vitrectomy and epiretinal membranectomy was indicated in patients with visual acuity less than 20/40, but nowadays with technical improvement and surgical instrument renovation, it seems to have been changed the surgical indication. Therefore, we plan to evaluate the changes of binocular visual acuity, aniseikonia in patients with epiretinal membrane.

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Key information

Conditions

Epiretinal Membranectomy Aniseikonia Epiretinal Membrane Eye Diseases Refractive Errors Retinal Diseases

Age range

20 year–90 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Institute of Vision Research, Department of Ophthalmology, Gangnam Severance Hospital

Seoul, 135-720, South Korea

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Idiopathic epiretinal membrane who had impaired vision or metamorphopsia, want to undergo vitrectomy
Age more than 20 years and less than 90 years old

Exclusion criteria

secondary epiretinal membrane due to retinal surgery,
impaired visual acuity less than 20/40 in the normal eye(Snellen chart) due to severe cataract
glaucoma patients
complication during vitrectomy (ex. Retinal tear, silicone oil injection, …)
other retinal disease except epiretinal membrane
other ocular surgery history within 3 months
intellectual problems or illiterate whom could not obtained informed consent

Treatment and study plan

Primary outcomes

Changes of Stereopsis tested by TNO test (arc of second)

Time frame: from Initial screening day before surgey to postoperative 6 months

Stereopsis is normal binocular vision. Its presence or absence is an important indicator of the state of binocularity. The TNO test is graded to provide retinal disparities ranging from 15 to 480 second of arc.
Titmus test (arc of second)

Time frame: from Initial screening day before surgey to postoperative 6 months

Sponsors and collaborators

Lead sponsor

Yonsei University

Other

Registry information

Important dates

Study start: 2013
Primary completion: 2014
Study completion: 2014
First posted: Jul 17, 2013
Registry last updated: Aug 12, 2014

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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Completed