Publication: Association between axial length of the eye and primary angle closure glaucoma
Date
2008
Journal Title
Journal ISSN
Volume Title
Publisher
Kathmandu University
Abstract
Abstract
Background: Angle closure glaucoma is emerging as a leading cause of blindness in Asia.
Objective: To compare the ocular axial length of normal individuals and the subjects with primary angle closure
glaucoma. This study has been conducted to determine axial length of eye as a risk factor of primary angle closure
glaucoma.
Materials and Methods: A cross-sectional comparative study was carried out in Mechi Eye Care Centre, Jhapa, Nepal
including forty eyes of 20 diagnosed cases of primary angle closure glaucoma (40 eyes) and 40 eyes of 20 normal
subjects selected by simple random sampling. A complete ocular examination of all the subjects was carried out. Axial
length measurement was done using ultrasound A scan.
Results: Out of 80 eyes, there were 40 eyes of 20 diagnosed primary angle closure subjects and 40 eyes of 20 normal
subjects. The mean axial length and standard deviation of primary angle closure glaucoma were 21.93 + 1.16 mm (95%
CI = 21.41 - 22.45) and those of control group were 23.01 + 0.49 (95% CI = 22.79 - 23.23). The axial length of less than
23 mm was found as a risk factor for angle closure glaucoma (Relative risk =3.40; p = 0.0032).
Conclusion: This study showed that patients with the axial length of less than 23 mm are at risk to develop primary
angle closure glaucoma. This result can be con rmed by doing population based study in a larger sample size.
Keywords: Axial length, Primary angle closure glaucoma, Nepal
Description
Sherpa D 1 , Badhu BP 2
1Lecturer, Department of Ophthalmology, Kathmandu University School of Medical Science, Dhulikhel, Nepal,2 Additional Professor, Department of Ophthalmology, B.P. Koirala Institute of Health Sciences, Dharan, Nepal.