Relucency

Each has a complex cellular structure, which leads to some internal dispersion of light, a feature called ‘relucency’. The more dense the optical structure is, the greater is its relucency. Relucency is a measure of the heterogeneity of a medium. There is no relucency in quality glass.

The guttae (guttata is an adjective!) are evident on slit lamp biomicroscopy as tiny drop-like relucencies on the posterior corneal surface.

Lesions appear as subepithelial to stromal gray/white, crystalline, relucencies within the corneal stroma.