Anatomy

Question 0

Cornea characteristics:

Answer 0

• helps eye refract

- has 43 D of power

Question 1

Three layers (or tunics) of Outer Eye are:

Answer 1

1. Outer Sclera & cornea
2. Choroid (vascular, blood vessels)
3. Retina

Question 2

Three Chambers of Inner Eye:

Answer 2

Front: Anterior Chamber (filled w aqueous humor, Iris divides chambers
Middle: Posterior Chamber
Back: Vitreous Chamber

Question 3

Crystalline Lens characteristics:

Answer 3

Ciliary muscles/zonules flex it to create accommodation

Question 4

Myopia anatomy:

Answer 4

Minus power. Eye is too long, light focuses before retina.

Question 5

Hyperopia Anatomy characteristics:

Answer 5

Plus power. Eye is too short. Light focuses past retina.

Question 6

Astigmatism characteristics:

Answer 6

Football shaped eye.
Power on two meridians.
Light focuses at two points.

Question 7

Spherical

Answer 7

Light doesn’t focus right

Question 8

Coma

Answer 8

Bundle of rays form distortion

Question 9

Chromatic aberration

Answer 9

Lens dispersed light into rainbow, low abbé value, halos

Question 10

Oblique astigmatism

Answer 10

Causes astigmatism. Bundle of light enters at oblique angle

Question 11

Curvature field

Answer 11

Has power different at edge of lens

Question 12

Distortion

Answer 12

Magnifications occur at edge