Birding in the Tunnel

Retinitis Pigmentosa, or RP, is a degenerative, hereditary eye disease, and a miserable hand to draw at the table of genetic inheritance. RP reduces, or outright destroys, peripheral vision, by attacking the rod photoreceptors which are distributed to the sides of the retina, away from the back of the eye, where the cones predominate. The cones provide… Continue reading Birding in the Tunnel