Eye and Vision
Fox, a substantial part of Chapter 10
Vision is usually covered everywhere, and Freeman has the topic
TRANSPARENCY (intro book) eye and retina structure
TRANSPARENCY (intro book) spectrum and spectra for the 3 cones that mediate colo
Retina is mounted backwards relative to the path of light
expands on the above figure with retinal wiring diagram:
Straight through: Photoreceptor -> bipolar -> "ganglion" cells (whose axons form the
light causes 11-cis retinal (aldehyde of vitamin A, retinol) to turn to all-trans.
("retinene" - term used in book - is old fashioned)
George Wald 1967 Nobel prize
The alpha subunit of transducin (the name for the G
Eye and Vision Practice Exam 2013
Blind spot, answer either (1) In terms of anatomy, why is this found on the temporal VISUAL
field? or (2) Why is that area blind?
because the optic nerve exits the eye on the nasal RETINAL field, there can be no receptors
Reproduction Practice Exam Questions
A blood test to assay for (name the substance in words) is commonly used to determine the
likelihood of prostate cancer.
prostate specific antigen
In the ovary, if the corpus luteum becomes the corpus albicans, what do
"the eye is the window to the brain" - physician can actually look at CNS
For instance, increased cranial pressure (like from tumor) shows up as papilledema
Optic disc is where optic nerve exits and blood supply enters and exits.
Glaucoma - pressure is too high because aqueous humor does not drain well, ganglion
cells die, treated with drops or surgery
Floaters in vitreous especially in myopia
Diabetic retinopathy blood vessels overgrow, leak, blast holes in retin