Overview

This trial is active, not recruiting.

Condition vision, ocular
Treatment phinhole glasses
Sponsor Chung-Ang University Hospital
Start date April 2014
End date April 2014
Trial size 30 participants
Trial identifier NCT02111356, PH-001

Summary

Pinhole glasses which is using pinhole effect may induce a functional change on the eyes, including Distance and near visual acuity(DVA, NVA), Pupil size, DOF, Accomodative amplitude, CS, Visual field(VF), Stereopsis.

United States No locations recruiting
Other Countries No locations recruiting

Study Design

Intervention model single group assignment
Masking open label
Primary purpose basic science
Arm
(Experimental)
All subjects perform ophthalmic examinations before and after the pinhole glasses (Trayner Pinhole Glasses, Trayner Glasses, U.K.)
phinhole glasses
Wearing the pinhole glasses (Trayner Pinhole Glasses, Trayner Glasses, U.K.)

Primary Outcomes

Measure
Distance and near visual acuity(DVA, NVA)
time frame: Change from baseline at 1 week

Secondary Outcomes

Measure
Pupil size
time frame: Change from baseline at 1 week
Depth of focus
time frame: Change from baseline at 1 week
Accomodation
time frame: Change from baseline at 1 week
Visual field
time frame: Change from baseline at 1 week
Contrast sensitivity
time frame: Change from baseline at 1 week
Stereopsis
time frame: Change from baseline at 1 week

Eligibility Criteria

Male or female participants from 20 years up to 50 years old.

Inclusion Criteria: - Age : between 20 and 50 years old - Visual acuity : correctable distant and near visual acuity by glasses up to 20/20 - Others : Normal intraocular pressure, optic discs with a healthy appearance, and normal ocular alignment. Exclusion Criteria: - History of systemic or topical medication that might affect accommodation - Others : Corneal pathologic features, previous ocular surgery, glaucomatous optic discs, glaucoma, cataracts of grade II or greater, vitreous opacity, or retinal abnormalities that might limit the accuracy of test.

Additional Information

Official title Quantative Analysis of Functional Changes by the Pinhole Glasses
Principal investigator WonSoo Kim, M.D.
Trial information was received from ClinicalTrials.gov and was last updated in April 2014.
Information provided to ClinicalTrials.gov by Chung-Ang University Hospital.