shagreen of the crystalline lens

shagreen of the crystalline lens 

The slightly irregular or granular appearance of the surfaces of the crystalline lens when viewed with the slit-lamp with specular reflection illumination. The posterior lens shagreen has a slightly yellower tint and is less coarse than the anterior. It is believed to represent variations in the refraction of light within the lens capsule. See Vogt's sign.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann