Determine Functions of Pinhole Glasses on the Eyes (PH001)

Chung-Ang University Hosptial, Chung-Ang University College of Medicine

Status: Unknown

Conditions: Vision, Ocular

Treatments: Device: Phinhole glasses

Study type: Interventional

Funder types: Other

Identifiers

NCT02111356

PH-001

Details and patient eligibility

About

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.

Enrollment: 30 estimated patients

Sex: All

Ages: 20 to 50 years old

Volunteers: Accepts Healthy Volunteers

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.

Trial design

Primary purpose: Basic Science

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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30 participants in 1 patient group

Pinhole glasses

Experimental group

Description:

All subjects perform ophthalmic examinations before and after the pinhole glasses (Trayner Pinhole Glasses, Trayner Glasses, U.K.)

Treatment:

Device: Phinhole glasses