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

Table 1

Distribution of signs of optic nerve damage in nonmydriatic fundus photography as evaluated by glaucoma specialist 1.

Signs of optic nerve damage		Controls; ()	Glaucoma; ()	Sensitivity and specificity
Vertical C/D ratio ≥0.6	No	65	24	Sensitivity 66.67% (55.78–77.56%)
	Yes	7	48	Specificity 90.28% (88.43–97.12%)
Vertical C/D ratio asymmetry ≥0.2	No	65	30	Sensitivity 58.33% (46.95–69.72%)
	Yes	7	42	Specificity 90.28% (83.43–97.12%)
Notches or thinning of the neuroretinal rim	No	72	32	Sensitivity 55.56% (44.08–67.03%)
	Yes	0	40	Specificity 100%
Optic disc hemorrhages	No	72	68	Sensitivity 5.56% (0.26–10.85%)
	Yes	0	4	Specificity 100%

C/D: cup to disc.