Prevalence, Demographics, and Treatment Characteristics of Visual Impairment due to Diabetic Macular Edema in a Representative Canadian Cohort

Table 4

Visual impairment in patients with DME.

	Control (𝑁= 76,077)	Patients with DME (𝑁= 1,316)		Patients with DME (<20/40) (𝑁=215)
Age (years)	69	63		64
HbA1c at diagnosis (mean ± SD)	6.3 ± 0.3	7.4 ± 1.7		7.6 ± 2.2
Right eye affected [𝑛 (%)]	n/a	486 (37%)		96 (45%)
Left eye affected [𝑛 (%)]	n/a	632 (48%)		92 (43%)
Both eyes affected [𝑛 (%)]	n/a	197 (15%)		26 (12%)
Type*	n/a	Focal	Diffuse	Focal	Diffuse
		750 (57%)	566 (43%)	114 (53%)	101 (47%)

*Diffuse edema is associated with a paucity of lipid exudates. Focal edema is associated with the presence of lipid and lipid rings [1].