Diagnostic Accuracy of Nonmydriatic Fundus Photography for the Detection of Glaucoma in Diabetic Patients

Table 2

Distribution of signs of optic nerve damage in nonmydriatic fundus photography as evaluated by glaucoma specialist 2.

Signs of optic nerve damage		Controls; ()	Glaucoma; ()	Sensitivity and specificity
Vertical C/D ratio ≥0.6	No	67	39	Sensitivity 45.83% (34.32–57.34%)
	Yes	7	33	Specificity 93.05% (87.18–98.92%)
Vertical C/D ratio asymmetry ≥0.2	No	66	37	Sensitivity 48.61% (37.06–60.15%)
	Yes	6	35	Specificity 91.66% (85.28–98.05%)
Notches or thinning of the neuroretinal rim	No	70	48	Sensitivity 33.33% (24.44–44.02%)
	Yes	2	24	Specificity 97.22% (93.42–101.01%)
Optic disc hemorrhages	No	72	68	Sensitivity 5.56% (0.26–10.85%)
	Yes	0	4	Specificity 100%

C/D: cup-to-disc.