Clinical Significance of Nasal Step Index in Early Glaucoma.
- Author:
Je Myung LEE
1
;
Woo Chan PARK
;
Kyung Won YOO
;
Sae Heun RHO
Author Information
1. Department of Ophthalmology, College of Medicine, Dong-A Medical Center, Pusan, Korea.
- Publication Type:Original Article
- Keywords:
Early glaucoma;
Mean defect;
Nasal step index
- MeSH:
Area Under Curve;
Glaucoma*;
Humans;
Nerve Fibers;
Photophobia;
Visual Fields
- From:Journal of the Korean Ophthalmological Society
1996;37(3):496-501
- CountryRepublic of Korea
- Language:Korean
-
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.
