AIM: To investigate the correlative factors of corneal horizontal diameter(CHD)and anterior chamber depth(ACD)and discuss the affecting factors of anterior chamber volume(ACV).

METHODS: A total of 241 cases(482 eyes)of myopia aged 6-47 years were collected on randomly. There were 124(248 eyes)male subjects and 117(234 eyes)female subjects. CHD and ACD were measured with the Orbscan ⅡZ system, and each measurement was repeated three times. SPSS 17.0 software was used to analyze the correlation data. Mathematical model was set up to research anterior chamber volume.

RESULTS: The average of CHD is(11.69±0.51)mm, with diameter of(11.74±0.49)mm in male and(11.64±0.53)mm in female.The average of ACD was(3.04±0.30)mm, with depth of(3.07±0.30)mm in male and(3.02±0.29)in female. Differences in gender of CHD and ACD were significant in the t-test for independent samples(t= -2.265, -1.971; P=0.024, 0.05), these size of male were both larger than that of female. Through person correlation analysis, a negative correlation was found between CHD and age, ACD and age(r= -0.260,

-0.246; P=0, 0); a positive correlation was found between CHD and ACD(r=0.297; P=0), the regression equation between CHD and ACD in myopia population was Y=1.025+0.173X(F=46.440,P=0, R²=0.088), where Y represents ACD and X represents CHD.

CONCLUSION: There are statistically significant difference between male and female in CHD, ACD and ACV. The size of these in male is larger than in female. The CHD is positively correlated with the ACD, and CHD, ACD and ACV are negatively correlated with age and are not associated with the degree of myopia.