Determine Functions of Pinhole Glasses on the Eyes

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2014-04-30

Study Completion Date

2014-04-30

Brief Summary

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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.

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Detailed Description

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Conditions

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Vision, Ocular

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Pinhole glasses

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

Group Type EXPERIMENTAL

Phinhole glasses

Intervention Type DEVICE

Wearing the pinhole glasses (Trayner Pinhole Glasses, Trayner Glasses, U.K.)

Interventions

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Phinhole glasses

Wearing the pinhole glasses (Trayner Pinhole Glasses, Trayner Glasses, U.K.)

Intervention Type DEVICE

Eligibility Criteria

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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.

Minimum Eligible Age

20 Years

Maximum Eligible Age

50 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes