Eye histology in one of the fish with most degenerated eyes. A eye capsule. Notice the absence of lens. B retina. Notice the high disorganization of vestigial layers, which are for the most part unrecognizable when compared to surface fish retinal layers.

  Part of: Espinasa L, Legendre L, Fumey J, Blin M, Rétaux S, Espinasa M (2018) A new cave locality for Astyanax cavefish in Sierra de El Abra, Mexico. Subterranean Biology 26: 39-53. https://doi.org/10.3897/subtbiol.26.26643