Table 2.

Recommendations to access the quality of retinal images

Image quality	Optic Disc	Macula	Superior Vascular Arcade and Inferior vascular arcade	Vessels
Good Quality	Clearly visible, well focused and gradable	Clearly visible, well focused and gradable	Both clearly visible, focused and gradable.	Are visible across >90% of image
Moderate Quality	Clearly visible but is not sharp focused and gradable	Clearly visible but is not sharp focused and gradable	Both clearly visible, focused and gradable	Vessels are seen in 80% or more of image
Poor Quality	Optic Disc is not clearly visible	Macular region is not clearly visible	At least one of the arcade is clearly visible, focused and gradable.	Vessels are seen in 60% or more of image.
Discard	Optic Disc is not visible	Macula is not clearly visible.	None of arcade is clearly visible.	Vessels are seen in <60% of image