Fig. 3From: A pleiotropic interaction between vision loss and hypermelanism in Astyanax mexicanus cave x surface hybridsHypermelanic fish harbor significant morphological abnormalities associated with their structural eye. Average eye size was quantified as orbital area (mm2), eyeball area (mm2), and pupil area (mm2) in n = 10 hypermelanic and n = 10 surface fish using the ‘polygon selection’ and ‘measurement’ tools in ImageJ. Hypermelanic fish exhibit significantly smaller eyes across all three metrics compared to surface fish (***p < 0.0001)Back to article page