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Evaluation

Are you examining the ocular fundus of a patient with diabetes mellitus?

Is there any retinal thickening within 1 disk diameter (DD) of the center of the macula?

Distance from the edge of the retinal thickening zone to the center of the macula

Diameter of the retinal thichening zone expressed

disc diameters

Is there a hard exudate within 1 disk diameter (DD) of the center of the macula?

Distancen from the hard exudate to the center of the macula

Is the hard exudate in or adjacent to an area of retinal thickening?

Results

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