NCLE EXAM 2023-2024 ACTUAL EXAM 200 QUESTONS AND CORRECT DETAILED ANSWERS (100% VERIFIED ANSWERS) |AGRADE

NCLE EXAM 2023-2024 ACTUAL EXAM 200 QUESTONS

AND CORRECT DETAILED ANSWERS (100%

VERIFIED ANSWERS) |AGRADE

Given the following information: K's 42.50@180/42.50@90

Rx -3.00-1.00@90

Which of the following set of RGP lens specifications will best correct this wearers

vision?

a. 42.50/43.50 -3.00-1.00x90

b. 42.50 -3.00-1.00x90 prism ballasted

c. 42.50 -3.00

d. 43.00 -3.50 - ANSWER- b. 42.50 -3.00-1.00x90 prism ballasted

Given the following information: K's 42.00@180/45.00@90

Rx -3.00-2.25x180

Which of the following set of RGP lens specifications will best correct this wearers

vision?

a. 42.00/45.00 -3.00-2.25

b. 42.00 -3.00-2.75 x 177 prism ballasted

c. 42.00 -3.00

d. 45.00 -3.00 - ANSWER- a. 42.00/45.00 -3.00-2.25

A warped lens will show___________ base curve(s) on the radiuscope and a

________ power on the lensometer.

a. one/spherical

b. two/sphero-cylindrical

c. one/sphero-cylindrical

d. two/spherical - ANSWER- d. two/spherical

The pre-corneal tear film is composed of three distinct layers. They are:

a. Lysozyme, oil, lacrimal

b. Sebacious, mucoid, BAK

c. lipid, lacrimal, mucin

d. water, mucoid, lysozyme - ANSWER- c. lipid, lacrimal, mucin

The pre-corneal tear film provides

1. A smooth optical surface

2. Metabolic nutrients

3. Endothelial reflex

4. Limbal Hyperemia

a. 1&3

b. 1&2

c. 2&3

d. 3&4 - ANSWER- b. 1&2

The main supply of oxygen to the cornea is derived from the

a. Endothelium

b. Collagen Fibrils

c. Basal membrane

d. Tears - ANSWER- d. Tears

The cornea has five distinct layers. In order from anterior (front) to posterior(back)

they are:

a. Epithelium, Descemets membrane, Stroma, Bowmans membrane, Endothelium.

b. Endothelium, Stroma, Bowmans membrane, Descemets membrane, Epithelium.

c. Epithelium, Bowmans membrane, Stroma, Descemets membrane, Endothelium.

d. Endothelium, Bowmans membrane, Stroma, Descemets membrane, Epithelium.

- ANSWER- c. Epithelium, Bowmans membrane, Stroma, Descemets membrane,

Endothelium.

The normal cornea is transparent due to the pump action creating proper fluid

balance. Which layer of the cornea is most responsible for maintaining this

function?

a. Endothelium

b. Basal membrane

c. Epithelium

d. Bowmans membrane - ANSWER- a. Endothelium

The normal cornea is in a state of

a. Turgesence

b. Deturgesence

c. Hyperemia

d. Hypoxia - ANSWER- b. Deturgesence

The cornea receives nutrients from

1 Aqueous humor

2 Tears

3 Limbal blood vessels

4 Orbicularis occuli

a. 1, 3 & 4

b. 2 & 3

c. 1, 2 & 3

d. 3 & 4 - ANSWER- c. 1, 2 & 3

Refraction -1.00-3.00 x 90 K Reading 44.00@180/ 41.00@90

a. BC 41.00/44.00 Power -1.00/3.00

b. BC 41.00/44.00 Power -1.00/-4.00

c. BC 41.00/44.00 Power -4.00/-1.00

d. BC 44.00/41.00 Power -1.00/-3.00 - ANSWER- b. BC 41.00/44.00 Power -

1.00/-4.00

book lists C as answer?

A dense white appearance of the entire peripheral circumference of the cornea

which does not stain and is often seen in the elderly is known as:

a. neovascularization

b. Dellen

c. Arcus senilus

d. Corneal ulcer - ANSWER- c. Arcus senilus

The main focusing mechanism of the eye is the

a. Cornea

b. Crystalline Lens

c. Retina

d. Vitreous - ANSWER- b. Crystalline Lens

A normal tear break up time is

a. 6-7 seconds

b. 10-12 seconds

c. Less than 5 seconds

d. none of the above - ANSWER- b. 10-12 seconds

Which of the following materials will not require a weekly enzymatic cleaner?

a. Polymethylmethacrylate lenses

b. Sofperm

c. Hydroxyethyl Methacrylate lenses

d. Silicone - acrylate lenses - ANSWER- a. Polymethylmethacrylate lenses

Clinical management of RGP flexure may be eliminated by:

a. redicing sagittal vaulting

b. increasing center thickness

c. Choosing a lower DK material

d. all the above - ANSWER- d. all the above

Upon removal of the crystalline lens, the patient is:

a. aphakic

b. myopic

c. hyperopic

d. astigmatic - ANSWER- a. aphakic

a hardening of the crystalline lens causing loss of accommodation is known as:

a. presbyopia

b. myopia

c. hyperopia

d. aphakia - ANSWER- a. presbyopia

A rigid contact lens measures +15.00 BVP. The FVP will measure.

a. a lesser dioptric reading