The apoptosis of rods is considered the trigger for the pathologic process of RP, and it has been hypothesized that increased intake of compounds required for rhodopsin synthesis, a light-sensitive protein, might halt the progression of RP.3 The efficacy of supplementations, including vitamin A,4,5 9-cis-beta-carotene,6 docosahexaenoic acid (DHA),7 and N-acetylcysteine (NAC)8 have been studied to slow down, stop or even reverse the progression of RP in several clinical trials. Here, RHO is linked to retinitis pigmentosa 1.