一、角膜曲率半径与角膜曲率的意义人眼的角膜有前后两个曲面 ,假设该曲面为球面形状则有其球心 ,球的半径即为曲面的曲率半径ｒ。可见 ,角膜的前后两面有各自的曲率半径。由于曲面两侧的屈光介质的折射率的不同 ,曲面具有对光束的集合或散开的能力 ,称为曲率 (ｃｕｒｖａ ｔｕ First, the meaning of corneal curvature and corneal curvature The human eye has two curved surface before and after the cornea, assuming that the surface is spherical shape of the sphere center, the radius of the sphere is the radius of curvature of the surface r. Visible, both sides of the cornea have their own radius of curvature. Due to the refractive index of the dioptric medium on both sides of the curved surface, the curved surface has the ability to gather or scatter the light beam, called curva tu