A Comprehensive Assessment of Anterior Corneal Power by Different Devices

Wenzhou Medical University

Status: Completed

Conditions: Myopia

Treatments: Device: Corneal power measurement

Study type: Observational

Funder types: Other

Identifiers

NCT01587287

YNKT201101

Details and patient eligibility

About

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

Full description

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.

Enrollment: 35 patients

Sex: All

Ages: 18 to 55 years old

Volunteers: Accepts Healthy Volunteers

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.

Trial design

35 participants in 1 patient group

Corneal power measurement

Description:

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

Treatment:

Device: Corneal power measurement