Reproducibility of Optic Nerve Head Topographic Measurements with the Heidelberg Retina Tomograph.

Chung, Hak Sung; Park, Myung Ho; Kim, Ho Kyum; Hong, Young Jae

Original Article

Journal of the Korean Ophthalmological Society 1996;37(1):136-142.
Published online January 1, 1996.

Reproducibility of Optic Nerve Head Topographic Measurements with the Heidelberg Retina Tomograph.

Hak Sung Chung, Myung Ho Park, Ho Kyum Kim, Young Jae Hong

¹Department of Ophthalmology, College of Medicine, Yonsei University, Korea.
²Department of Ophthalmology, Wonju College of Medicine, Yonsei University, Korea.

Heidelberg Retina Tomograph 를 이용한 시신경유두 국소형태 측정의 재현성

정학성(H S Chung),박명호(M H Park),김호겸(H K Kim),홍영재(Y J Hong)

Abstract

Laser scanning tomography is an accurate method for the three-dimentional assessment of the optic nerve head. But its topographic measurement should be highly reproducible for early diagnosis and follow-up of patients with glaucoma. The authors evaluated the reproducibility of optic nerve head topographic measurements by the Heidelberg retina tomograph(HRT). The mean standard deviation of height measurements and the mean coefficient of variation of each parameters were calculated on the 10 independent measurements in five normal eyes. The results showed that the mean standard deviation of height measurements was 29.19 microgram. The mean coefficient of variation of the cup area, rim area, rim volume, mean cup depth and the mean retinal nerve fiber layer thickness was under 10%. Optic nerve head topographic measurement by the HRT is highly reprooucible, which may help follow-up of glaucoma patients.

Key Words: Glaucoma;Heidelberg retina tomograph;Optic nerve head;Reproducibility