Sight - The Eye (Leaving Cert Biology): Flashcards

Protects sclera; inflammation causes conjunctivitis

Transparent section allowing light to enter the eye

Nourishes eye & absorbs light to prevent reflection

Black and white

Colour

Central retina with only cones; sharpest vision & focus

Area with no rods or cones; no images detected

Carries impulses from eye to brain

Adjusts lens shape to focus on varying distances

Contracts to reduce light entering eye

Dilates to allow more light to enter eye

Can't see near objects clearly; corrected with convex lens

Can't see distant objects clearly; corrected with concave lens

Process of changing the focus of the eye

Upside down; brain interprets so we see right way up