Exploration Of The Human Eye Flashcards
Lens
Transparent tissue that vends light passing through eye
Cornea
Transparent tissue covering eye
Iris
Circular band of muscle that controls eye size
Vitreous humour
Jelly-like substance that makes the eye maintain its shape
Retina
Sensory tissue that focuses eye and responds to light
Optic nerve
carries visual signals to the brain
Fovea
Central retina and focused vision
Rods
Vision at low light levels
Cones
Deals with details and colors
Where are cones and rods located?
Retina
What do rods help you see
Low light levels
What do cones help you see
Higher light levels
Myopia
Nearsighted
When light focuses in front of the retina
Longer eye & steeper cornea
Hypermetropia
Farsighted
Focuses behind retina
Shorter eye
Astigmatism
Light focuses are more than one part
Cornea is oval