Tear glucose is associated with the presence and severity of diabetic retinopathy

Table 4 The distribution of different status of tear glucose stratified by severity of diabetic retinopathy

Tear glucose	No DR (n = 107)	Mild DR (n = 13)	Severe DR (n = 40)	p	p^†	p^‡
Positive	50(46.7)	8(61.5)	33(82.5)	< 0.01^*	0.31	< 0.01^*
Negative	57(53.3)	5(38.5)	7(17.5)	< 0.01^*	0.31	< 0.01^*

Data are presented as n (%)
DR: diabetic retinopathy; TG: Tear glucose; Mild DR: mild and moderate non-proliferative diabetic retinopathy; Severe DR: severe non-proliferative diabetic retinopathy and proliferative diabetic retinopathy
*Statistically significant; †Mild DR vs No DR; ‡Severe DR vs No DR
Significant differences were calculated by Bonferroni’s post hoc comparison test

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