方法：选择非增殖期DR患者80例155眼，并根据眼轴长度分为三组，其中22～24mm者27例51眼，为正常组； 24～26mm者28例55眼，为长眼轴组； >26mm者25例49眼，为超长眼轴组。测量三组患者中心视网膜厚度与眼轴长度，分析中心视网膜厚度与眼轴长度的相关性。

结果：超长眼轴组内外环上、下及颞侧和外环鼻侧中心视网膜厚度较正常组厚，差异有统计学意义(P<0.05)； 超长眼轴组内外环上、下及颞侧和外环鼻侧中心视网膜厚度较长眼轴组厚，差异有统计学意义(P<0.05)； 糖尿病视网膜病变黄斑中心区，眼轴长度与视网膜厚度无相关性(P>0.05)，内环区及外环区视网膜厚度随眼轴长度增加而变薄，两者呈负相关(r_内环=-0.63，r_外环=-0.67，P<0.05)。

结论：非增殖期DR患者中心视网膜厚度与眼轴长度具有相关性，超长轴患者中心视网膜厚度明显变薄。

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.