AIM: To measure ocular biometric values with the degree of axial myopia and determine the relationship between the differences using the Lenstar 900.

METHODS:Totally 413 myopes(826 eyes)were enrolled in this study and were divided into 3 groups: low myopia(myopia <3.00 diopters, 104 eyes), moderate myopia(myopia =3.00-6.00 diopters, 500 eyes)and high myopia(myopia >6.00 diopters, 222 eyes). Central corneal thickness(CCT), aqueous depth(AD), lens thickness(LT), axial length(AL)were measured by Lenstar 900. The parameters were tested using analysis of variance and the relations among SE, AL, LT were analyzed.

RESULTS: There were significant difference both in AL(F=206.16, P<0.01)and AD(F=4.764, P<0.05)and no significant difference both in CCT and LT between these myopia groups. With analysis of Person, the Spherical equivalent(SE)shows a significantly positive correlation with AL(r=0.662, P<0.01)and AD(r=0.095, P<0.05), no correlation with CCT and LT. AL shows a significantly positive correlation with AD(r=0.347, P<0.01)and CCT(r=0.126, P<0.01), negative correlation with LT(r=-0.265, P<0.01). LT shows a significantly negative correlation with AD(r=-0.496, P<0.01).

CONCLUSION: Along with the diopters increasing in myopia, the axial length and aqueous depth continue to increase. Spherical equivalent(SE)shows a significantly positive correlation with AD. AL shows positive correlation with SE, AD and CCT and negative correlation with LT. LT shows a significantly negative correlation with AD.