Owoeye Accomodation

Question 1

What is a dynamic process to produce and maintain a focused retinal image. Power of the lens changes to maintain image. Lens curvature changes, the lens power changes and focusing changes…

Answer 1

Accomodation

Question 2

What is the only active muscle with accommodation while other parts are passive?

Answer 2

Ciliary muscle

Question 3

Ciliary muscle contracts while all other muscles ________ and accommodation occurs.

Answer 3

Relax

Question 4

Does the diameter get smaller or bigger with accommodation?

Answer 4

Diameter gets smaller, more round

Starts as frisbee goes to ball

Question 5

Ciliary muscle has what kind of innervation?

Answer 5

parasympathetic

Question 6

True/False: Ciliary muscle is in the ciliary body

Answer 6

True

Question 7

What are zonules of the eye?

Answer 7

contraction cords attached to the eye muscles

Question 8

The signal goes to the midbrain/occulomotor nucleus/edinger-westphal, which starts what pathway/ innervation?

Answer 8

parasympathetic pathway

Question 9

Anterior and posterior capsule is ________ when there is no accommodation.

Answer 9

taught and flat

Question 10

Ciliary muscle is _______ when there is no accomodation.

Answer 10

relaxed

Question 11

From infinity to 40cm, calculate the demand.

Answer 11

100/40= 2.5 D

Question 12

From infinity to .33m, what is the demand?

Answer 12

100/33cm= 3D

Question 13

What are the 3 physiological changes seen in accommodation:

Answer 13

Eye accommodation
Pupil constriction
Eyes converge

Question 14

Why does the pupil size change? 3 things

Answer 14

Controls light
Modifies depth of focus
varies any optical aberration