A Comprehensive Assessment of Anterior Corneal Power by Different Devices

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

COMPLETED

Total Enrollment

35 participants

Study Classification

OBSERVATIONAL

Study Start Date

2011-04-30

Study Completion Date

2011-07-31

Brief Summary

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To comprehensively assess the precision and agreement of anterior corneal power measurements using 8 different devices.

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Detailed Description

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Volunteers with healthy corneas will be measured by different instruments to detect their anterior corneal power. Only the right eye of each subject was selected. Measurements were repeated in the second session scheduled 1 to 2 weeks later.

Conditions

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Myopia

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Corneal power measurement

All recruited volunteers in present study, that underwent corneal power measurement with 8 different instruments

Corneal power measurement

Intervention Type DEVICE

All subjects will be underwent a full ophthalmic examination including vision, auto- and subjective refraction, slit-lamp examination, non-contact tonometry, corneal power measurements with the 8 devices and fundus examination.

Interventions

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Corneal power measurement

All subjects will be underwent a full ophthalmic examination including vision, auto- and subjective refraction, slit-lamp examination, non-contact tonometry, corneal power measurements with the 8 devices and fundus examination.

Intervention Type DEVICE

Other Intervention Names

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Tomey RC-5000

Eligibility Criteria

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Inclusion Criteria

* healthy cornea,
* best corrected distance visual acuity (BCVA) equal to or better than 20/25,
* willing and able to comply with scheduled visits and other study procedures.

Exclusion Criteria

* History of refractive surgery or any keratoplasty procedure,
* use of contact lenses,
* history of corneal dystrophies or degenerative diseases,
* history of glaucoma or ocular hypertension,
* significant subjective dry eye symptoms, Schirmer I test results of less than 5.0 mm, tear film break-up time shorter than 5 seconds and corneal fluorescein staining positive.

Minimum Eligible Age

18 Years

Maximum Eligible Age

55 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes