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Diabetes mellitus currently affects at least 1 in 40 persons worldwide,and is expected to affect 1 in 20 people by2030(1).Among those affected,approximately one-quarter have diabetic retinopathy(2)and a similar number will go on to develop vision-threatening diabetic macular
Diabetes mellitus currently affects at least 1 in 40 persons worldwide, and is expected to affect 1 in 20 people by2030 (1) .Among those affected, approximately one-quarter have diabetic retinopathy (2) and a similar number will go on to develop vision -threatening diabetic macular