Change of Retinally-Induced Aniseikonia in Patients With Epiretinal Membrane After Vitrectomy
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Sponsor
- Yonsei University
- Enrollment
- 24
- Locations
- 1
- Primary Endpoint
- Titmus test (arc of second)
Study Overview
Brief Summary
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.
Study Design
- Study Type
- Observational
- Observational Model
- Case Only
- Time Perspective
- Prospective
Eligibility Criteria
- Ages
- 20 Years to 90 Years (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- No
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
Outcomes
Primary Outcomes
Titmus test (arc of second)
Time Frame: from Initial screening day before surgey to postoperative 6 months
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.
Secondary Outcomes
No secondary outcomes reported