Vision is our most "dominant" sense. First, light enters the eye; then, organs in the eye perform transduction, turning visual signals into neural impulses. Then, neural impulses are transported to the Occipital Lobe's Visual Cortex and interpreted.
Hyphema caused by iris lesion. A hyphema is a collection of blood inside the front part of the eye. The blood may cover part or all of the iris and the pupil, and may partly or totally block vision in that eye.