PreLab 5 Flashcards
The ability to discern visual detail
Visual Acuity
Biconvex, transparent, flexible structure
Lens
Changing lens shape to allow image focusing
Accommodation
Fills in the middle ear
Air
Needed for high acuity color vision
Cones
Inner ear structure dedicated to hearing
Cochlea
Location on the retina called the “blind spot”
Optic Disc
Focal point falls behind the retina, farsightedness
hyperopia
Partition between the external and middle ear
tympanic membrane
Unequal curvature of the cornea of the lens
astigmatism
Double vision, inability of the eyes to converge
diplopia
Irregular curvature of the cornea of the lens
Astigmatism
Small spots that drift across , that result from cellular debris or blood cells in the vitreous body
Floater
Elevated intraocular pressure compresses capillaries and can lead to blindness
Glaucoma
When the retina falls out of the focal plane
Detached Retina
Clouding of the lens most often caused by exposure to UV light
Cataract
Progressive degeneration of the retina that affects the macula lutea and leads to loss of central vision
Macular degeneration
The bending of light rays
Refraction
Too little Vitamin A in the diet reduces the quantity of retinal impairing rhodopsin production
Night Blindness
Inflammation of the conjunctiva, also called pink eye
Conjunctivitis
The ability to focus for vision of objects within 20 feet
Accomodation
An eye with no visual deficits (normal vision)
Emmetropia
Technical term for farsightedness, the inability to see close objects
Hyperopia
Technical term for nearsightedness, the inability to see distant objects
Myopia
Process of rotating the eye medially to focus on objects that are close to you
Convergence
