Table 2. Quantification of AGE modified proteins in tears.

	AGE modified proteins
Group	µg/ml tears	µg/mg tear protein
CTL	3.28±1.96*	0.36±0.21**
DR	7.68±3.31	0.68±0.44
DNR	5.80±2.80	0.45±0.25

The asterisk indicates a p<0.05 versus DR and DNR, and the double asterisk indicates a p<0.05 versus DR.