Slide 26 - 32 Flashcards
(9 cards)
Most are found toward the edges of the retina
▪ Allow vision in dim light and peripheral vision
▪ All perception is in gray tones
Rods
Allow for detailed color vision
▪ Densest in the center of the retina
Cones
lateral to blind spot
Fovea centralis
Area of the retina with only cones
▪ Visual acuity (sharpest vision) is here
Fovea centralis
▪ Three types of cones
▪ Each cone type is sensitive to different wavelengths of
visible light
Cone sensitivity
Flexible, biconvex crystal-like structure
▪ Held in place by a suspensory ligament attached to the
ciliary body
Lens
Lens divides the eye into two chambers
Posterior (vitreous) segment
Anterior (aqueous) segment
Contains vitreous humor, a gel-like substance
Posterior (vitreous) segment
Contains aqueous humor, a clear, watery fluid
Anterior (aqueous) segment