AIM:To discuss mathematic relationship with academic degree of intraocular lens in aphakia.

METHODS: Based on geometrical optics method, Gullstrand exact model eye(No.1)and standard intraocular lens model eye, academic degree of intraocular lens by the mathematic relationship with corneal anterior curvature radius(r₁)were deduced, and corneal posterior curvature radius(r₂), corneal thickness(T), ocular visual axis(L)and effective lens position(ELP)in aphakia were analyzed.

RESULTS: The theoretical value of intraocular lens(IOL)was calculated by individual corneal data of numeration that academic degree of intraocular lens in aphakia.

CONCLUSION: Implanted correct IOL in aphakia, all kinds of which with refractive error can be rectified and come to correlation emmetropia.