Clinical Significance of Nasal Step Index in Early Glaucoma.

Lee, Je Myung; Park, Woo Chan; Yoo, Kyung Won; Rho, Sae Heun

Original Article

Journal of the Korean Ophthalmological Society 1996;37(3):496-501.
Published online March 1, 1996.

Clinical Significance of Nasal Step Index in Early Glaucoma.

Je Myung Lee, Woo Chan Park, Kyung Won Yoo, Sae Heun Rho

Department of Ophthalmology, College of Medicine, Dong-A Medical Center, Pusan, Korea.

초기 녹내장에서 Nasal Step Index 의 임상적 의의

이제명(Je Myung Lee),박우찬(Woo Chan Park),유경원(Kyung Won Yoo),노세현(Sae Heun Rho)

Abstract

Nasal step index(NSI) is an index of light sensitivity of the nasal step area, the early sign of visual field defects in glaucoma. It represents the asymmetry between the upper-nasal and lower-nasal quadrant within 30 degree field. We applied this index to 66 eyes with normal visual field and 204 eyes with mild-to-moderate glaucomatous visual field defect (mean defect(MD)or=1.04), respectively. AUC values related to the validity of this study were NSI-1:0.38, NSI-2;0.44 and MD;0.83 in early glaucoma patients. But AUC values in high NFBI patients were NSI -1;0.50, NSI -2;0.50, MD;0.82. Therefore, NSI is shown to have lesser diagnostic value than MD in detection of early glaucoma in this study.

Key Words: Early glaucoma;Mean defect;Nasal step index