AIM:To explore the correlation of center retinal thickness and axial length in non-proliferative diabetic retinopathy(DR).

METHODS:A total of 80 cases(155 eyes)of non-proliferative DR patients were divided into three groups according to the axial length, 22～24mm of 27 cases(51 eyes)were normal group, 24～26mm of 28 cases(55 eyes)were long axis group, > 26mm of 25 cases(49 eyes)were super long axis group. The center retinal thickness and ocular axial length of three groups were measured and the correlation of center retinal thickness and axial length were analyzed.

RESULTS:Among the inner ring and outer ring, the center retinal thickness of upper and lower, bitamporal and nasal side of super long axis group was thicker than that in normal group, with statistically significant difference(P<0.05); Among the inner ring and outer ring, the center retinal thickness of upper and lower, bitamporal and nasal side of super long axis group was thicker than that in long axis group, with statistically significant difference(P<0.05); The DR central macular of retinal thickness was no correlation of the axial length(P>0.05), but retinal thickness get thinning with increased of axial length on the inner ring and outer ring area, showed a negative correlation(r_{inner ring} =-0.63,r_{outer ring}=-0.67, P<0.05).

CONCLUSION:Center retinal thickness and ocular axial length in non-proliferative DR patients, and center retinal thickness of super long axis patients are thinning obviously.