Objective: To study the retinal nerve fiber layer thickness (RNFLT) of normal eye and the correlation with age.
Methods: RNFLT of 198 cases of normal eyes were examined by using nerve fiber analyzer (NFA).
Results: There were significant inverse linear correlation between the RNFLT and age (r = -0.46, P < 0.01). In the analysis by the quadrant, the RNFLT was correlated with age in the superior and inferior quadrant. The mean ratio of superior and inferior quadrant thickness (S/I) was 1.041.
Conclusion: NFA seems to be an useful tool to measure the RNFLT quantitatively. The RNFLT of normal eye is found to be decreased with age.