PubMed ID: 3684221
Author(s): Klein BE, Moss SE, Magli YL, Klein R, Johnson JC, Roth H. Optic disc cupping as clinically estimated from photographs. Ophthalmology. 1987 Nov;94(11):1481-3.
Journal: Ophthalmology, Volume 94, Issue 11, Nov 1987
Cup-to-disc ratios of 204 right eyes were evaluated by two clinicians and by a trained grader using a standardized grading scheme. Mean measurements by the grader were greater than estimates made by either clinician. The measurement scheme used by the trained grader has a high degree of reliability and validity. The standard protocol provides an objective assessment of optic disc cupping and could be easily adapted for office use.