“One of the most important known PCDs is retinitis pigmentosa (RP), which is a blinding disease associated with mutations in the rod opsin (RHO) gene among other retina-specific genes.
The only known difference between M and L cones is the expression of opsin. Hadyniak’s team used colorimetric in situ hybridization ... The team noted high expression of RA synthesis genes early in ...
Biochemical Measurements of Free Opsin in Macular Degeneration Eyes: Examining the 11-CIS Retinal Deficiency Hypothesis of Delayed Dark Adaptation (An American Ophthalmological Society Thesis).