Correlation between clinical grading and quantification by neutral density filter of relative afferent pupillary defect (RAPD).

Objective: To investigate the correlation between clinical grading in plus scale and quantified relative afferent pupillary defect (RAPD) using the neutral density filter bar.

Material And Method: This was a prospective analytical cross sectional study. Sixty-nine patients of any ocular disease with relative afferent pupillary defects were prospectively examined.