Method of measuring the elasticity of crystalline lens, a method of determining whether crystalline lens is presbyopic, an apparatus for measuring the elasticity of crystalline lens and an apparatus for determining whether crystalline lens is presbyopic

摘要

The present invention provides a method of measuring the elasticity of crystalline lens and an apparatus for measuring the elasticity of the crystalline lens for measuring stiffness of the crystalline lens 1, wherein the crystalline lens 1 is irradiated with pulse laser light to generate photoelastic waves from the crystalline lens 1, and the photoelastic waves from the crystalline lens 1 are measured.

主权项

1. A method of measuring the elasticity of crystalline lens for measuring stiffness of the crystalline lens,
wherein the crystalline lens is irradiated with pulse laser light to generate photoelastic waves from the crystalline lens, and the photoelastic waves from the crystalline lens are measured whereby a damping factor of the crystalline lens is calculated, the crystalline lens is irradiated with interference laser light to generate interference fringe by the photoelastic waves, and elastic modulus of the crystalline lens is calculated based on variation in the interference fringe, and a wavelength of the pulse laser light is set such that light transmission in the crystalline lens becomes 20% or lower.