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. 2020 Oct 26;35(8):2229–2232. doi: 10.1038/s41433-020-01232-z

Table 1.

The frequency and percentage for answers provided by our retina specialist compared to the original key answers for protanopia, deuteranopia and tritanopia.

Protanope Deuteranope Tritanope
Diabetic retinopathy Macular oedema Diabetic retinopathy Macular oedema Diabetic retinopathy Macular oedema
Two stages less than actual 7 (14%) 5 (10%) 7 (14%) 4 (8%) 6 (12%) 5 (10%)
One stage less than actual 10 (20%) 10 (20%) 8 (16%) 10 (20%) 6 (12%) 3 (6%)
Same stage as actual 25 (50%) 30 (60%) 28 (56%) 32 (64%) 31 (62%) 42 (84%)
One stage more than actual 7 (14%) 4 (8%) 7 (14%) 3 (6%) 5 (10%) 0
Two stages more than actual 1 (2%) 1 (2%) 0 1 (2%) 2 (4%) 0