Vision A Flashcards
1
Q
Three tunics of the eye wall
A
Fibrous
Vascular
Sensory
2
Q
Eyes detect the ___ spectrum of electromagnetic radiation
A
Visible light
3
Q
Light travels in particles of energy =
A
Photons
4
Q
Speed changes caused by light rays meeting a different medium=
A
Refraction
5
Q
Light rays focus and converge = ___ lens
A
Convex
6
Q
Convex lens bends light and converges light at a single point =
A
Focal point
7
Q
___ lens= light diverges (bent outward) so light rays move away from each other
A
Concave
8
Q
Changing the lens shape by ciliary muscle to increase refractory power=
A
Accommodation
9
Q
Medial rotation of eyeballs toward object being viewed=
A
Convergence
10
Q
Normal (far point) vision, eye does not need to change shape to focus = ___ meters
A
6 meters (20 feet)
11
Q
Refractive power of lens is measured in ___
A
Diopters
