Table 3.

Performance assessment of optic disc segmentation on various databases.

Database and number of images used	Sensitivity	Specificity	Accuracy	Jaccard index	Dice index	Average time taken per image in seconds
Drishti-GS (101)	0.9962	0.9698	0.9732	0.8707	0.9282	7.35
Drions-DB (110)	0.8410	0.9960	0.9850	0.8341	0.9062	4.45
Messidor (1200)	0.8840	0.9894	0.9882	0.7858	0.8760	6.34
Forus (126)	0.9457	0.9957	0.9911	0.9319	0.9642	6.22
Bosch (60)	0.9649	0.9994	0.9968	0.9109	0.9531	6.35