Retinal Nerve Fiber Layer Thickness Measurement on Parapapillary Atrophy With the Cirrus High-Definition (HD) Optical Coherence Tomography (OCT)

Yonsei University

Status

Unknown

Conditions

Glaucoma

Study type

Observational

Funder types

Other

Identifiers

NCT00742196

3-2008-0076-2

Details and patient eligibility

About

Retinal nerve fiber layer (RNFL) thickness measurement on the parapapillary atrophy is incorrect. Because a new spectral domain OCT, the Cirrus HD OCT, uses a movable circle to analyze the RNFL thickness, we may suggest a new analysis strategy for the parapapillary atrophy.

Full description

Recently, the retinal nerve fiber layer (RNFL) thickness measurement using the optical coherence tomography (OCT) becomes very useful to detect such a glaucomatous damage. However, there are some difficult cases including parapapillary atrophy to perform this measurement. Because the RNFL thickness is so sensitive to the position of measurement and the measurement of RNFL thickness on parapapillary atrophy is incorrect, it is difficult to determine exact RNFL thickness in patients with a large parapapillary atrophy. In the present study, we want to find the proper method to analyze the RNFL thickness on parapapillary atrophy. The previous OCT used a fixed circle to measure the RNFL thickness, but the new spectral domain OCT, the Cirrus HD OCT, uses a movable one. Therefore, we may suggest a new analysis strategy for the parapapillary atrophy.

Enrollment

30 estimated patients

Sex

All

Ages

18 to 70 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria