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CONTACT LENS (RNH) > Q1 PRE TASK CL > Flashcards

Q1 PRE TASK CL Flashcards

1
Q

The cornea is the clear outer layer at the front
of the eye.

a. True
b. False

A

a. True

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2
Q

The cornea does not help your eye to focus light so you can see clearly.

a. True
b. False

A

b. False

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3
Q

Cornea contributes about 30% of refractive power of the eye.

a. True
b. False

A

b. False

90%

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4
Q

The most powerful refractive element of the eye

a. True
b. False

A

a. True

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5
Q

Normal Cornea is prolate in shape.

a. True
b. False

A

a. True

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6
Q

Average diameter of the posterior surface is 11.5.

a. True
b. False

A

a. True

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7
Q

Center thickness is 0.42

a. True
b. False

A

b. False

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8
Q

Peripheral thickness is 0.8mm

a. True
b. False

A

a. True

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9
Q

Limbus thickness is 1mm.

a. True
b. False

A

a. True

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10
Q

Anterior surface of the cornea is elliptical.

a. True
b. False

A

a. True

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11
Q

The surface of the cornea is circular

a. True
b. False

A

a. True

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12
Q

Horizontal diameter is 11.5

a. True
b. False

A

a. True

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13
Q

Vertical diameter is 10.6mm

a. True
b. False

A

a. True

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14
Q

Anterior radius of curvature is 7.8mm

a. True
b. False

A

a. True

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15
Q

Posterior radius of curvature is 2.5mm

a. True
b. False

A

b. False

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16
Q

In Zones of the cornea: Apical zone is also called as the Central Zone

a. True
b. False

A

a. True

17
Q

Paracentral Zone is flatter than Central zone

a. True
b. False

A

a. True

18
Q

Peripheral Zone flattens the most in all the zones

a. True
b. False

A

a. True

19
Q

Corneal topography is the study of the shape of the corneal surface

a. True
b. False

A

a. True

20
Q

Corneal Topography configures and describes the surface of the cornea

a. True
b. False

A

a. True

21
Q

Keratometer only measures the central 3mm of the cornea

a. True
b. False

A

a. True

22
Q

Keratometer assumes the cornea to be spherical

a. True
b. False

A

a. True

CONTACT LENS (RNH) (8 decks)

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