Lecture 1: Introduction to Biological Vision - Vision Research ...

Optics• Functions– Image the world• simple & complex eyes indicate the importance of gathering patterninformation about nearby spatial relationships, i.e. visual direction• Refraction– cornea - bulk of refraction (fixed, ~43 diopters)– focus, lens (adaptive, “accommodation”)• focus range when young, up to 15 diopters• pupil - some control over light level (2 to 8mm diameter, or x16 areachange), depth-of-fieldWednesday, August 29, 12