As you may have noticed, above you will find words for "A substance present in the protoplasm of the retinal epithelium cells, and resembling, if not identical with, the myelin that forms the medullary sheaths of nerve fibres.". Hover the mouse over the word you'd like to know more about to view its definition. Click to find a better fitting word. Finally, thanks to ChatGPT, the overall results have been greatly improved.