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Ncle Training Questions And Answers 100% Correct!!!
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Ncle Training Questions And Answers 100% Correct!!!
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Ncle Training Questions And Answers100% Correct!!!
The cornea is clear and must remain clear, which means that it must be ________
and have regular cell structure, and be free from ________. - ANSWER✔✔
Avascular, scarring
The layers of the cornea from the outermost layer to the innermost layer in order
are: - ANSWER✔✔ Epithelium, Bowman's layer, stroma, Descemet's membrane,
Endothelium
In a normally healthy eye, minor corneal abrasions of the cornea are generally
repaired within _____ hours by mitosis and migration of fellow cells. -
ANSWER✔✔ 48 Hrs
Which layer of the cornea does NOT regenerate after injury? - ANSWER✔✔
Stroma
Enlargement of endothelial cells is called - ANSWER✔✔ Polymegathism
Keratometry measures the central of the cornea. - ANSWER✔✔ 3mm
You can extend the range up to 61 D by placing a ______ trial lens over the
aperture closest to the patient. This extends up an additional_______. -
ANSWER✔✔ +1.25, 9.00D
The ______ is the transitional zone from clear, avascular cornea to the opaque
sclera. - ANSWER✔✔ Limbus
,The aqueous layer, which is the middle layer of the tear film, contains ________ -
ANSWER✔✔ Inorganic salts, glucose, and urea as well as bioploymers, proteins,
and glycoprotiens
The mucoid layer, (mucin layer, mucous layer) is produced ________ by in the
__________. - ANSWER✔✔ Goblet cells, conjunctiva
The tear film or more correctly called the precorneal tear film _________ -
ANSWER✔✔ provides a smooth optical surface over the cornea. flushes away
cellular debris and foreign matter from the cornea and conjunctival sac as well as
carbon dioxide. provides nutrition for the cornea, and provides the antibacterial
function of the eye.
In reality, the first refracting medium of the eye is: - ANSWER✔✔ The precorneal
tear film
Evaluation of tear quantity and tear quality can be tested by - ANSWER✔✔ Tear
break up time , Schirmer's # 1 , Fluorescein, rose bengal
Sodium fluorescein is used to evaluate tear_______ - ANSWER✔✔ Quantity
________________ stains damaged conjunctival and corneal cells - ANSWER✔✔
Phenol red cotton thread
Since many cases of blepharitis are caused by dry eyes, the cornea would not be
properly lubricated and contact lens wear would be uncomfortable, if not
, impossible. ___________________. - ANSWER✔✔ Any inflammation should be
resolved prior to introducing contact lenses.
conjunctiva is a mucous membrane that runs continuously from the limbus to the
lid margin. It contains goblet cells that produce the mucins for the tear layer. -
ANSWER✔✔ True.
On the lids, the conjunctiva is referred to as the __________ while on the globe
the eye, it is referred to as the ___________. - ANSWER✔✔ palpebral conjunctiva,
bulbar conjunctiva
The refractive index of the cornea is: - ANSWER✔✔ 1.376
Inflammation of the conjunctiva is called________. - ANSWER✔✔ Conjunctivitis
Symptoms of the inflammation of the conjunctiva include _____________. -
ANSWER✔✔ pain, photophobia (light sensitivity), impaired vision, and discharge.
Eyelids are termed the ___________ while opened, and they are ___________. -
ANSWER✔✔ Palpebral aperture, not always the same size
The _____________ pumps tears away. - ANSWER✔✔ Levator muscle
____________ is an eyelid that is turned inward, and is often a result of muscle
spasm in the lid or scarring from trauma. - ANSWER✔✔ Entropion
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