The Eye Flashcards
How does the eye react to dim light
Radial muscles contract
Circular muscles relax
Pupil becomes dilated ( more light enters eye)
How does the eye react to bright light
Radial muscles relax
Circular muscles contract
Pupil contracts (less light enters eye)
What happens when an object is near the eye?
Ciliary muscles contract
Suspensory muscles slacked
Ciliary muscles relax
Suspensory muscles stretch
Is this when an object is near or far?
Far Away
What is the retina used for?
The retina is a layer of photoreceptors cells and glial cells within the eye that captures incoming photons and transmits them along neuronal pathways as both electrical and chemical signals for the brain to perceive a visual picture.
What do cones do?
They’re responsible for humans seeing colour.
What do retina contain?
Cones and rods
What is the difference between the Iris Response and Accommodation?
Iris response is the reaction and change to your iris due to light whereas Accommodation is the adaption of your eye to focusing on different distances.
