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NCLE SAMPLE TEST/17 QUESTIONS AND ANSWERS
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NCLE SAMPLE TEST/17 QUESTIONS AND ANSWERS
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NCLE SAMPLE TEST/17 QUESTIONSAND ANSWERS 2023-2024
antihistamines - -are beneficial when treating allergies and cold symptoms
because they dry out the mucous membranes of the nasal passage.
However, this may also lead to dehydration of the tear film, they are also
been known to slow down the blink rate and increase corneal sensitivity.
-against-the-rule astigmatism - -present when the keratometer readings are
steeper in the horizontal meridian (42.50) than in the vertical meridian
(40.50 @ 90)
-aqueous humor, tears and limbal blood vessels - -this is where the cornea
receives nutrients from
-lipid, aqueous, mucin - -the classic model of the pre-corneal tear film is
composed of these layers
-tear film - -the main supply of oxygen to the corneal epithelium is derived
from the:
-focus the eyepiece - -this is the first step that should be performed when
taking keratometer measurements
-ocular signs of aging - -1) tear film abnormalities
2) reduced lid elasticity
3) lens opacities
4) loss of accommodation
-endothelium - -the layer of the cornea whose main function is to keep the
cornea clear through created pump action creating proper fluid balance
-secondary infections - -patient with keratitis sicca are more prone to:
-one week - -the average life span of a corneal epithelial cell from mitosis
through maturation and desquamation
-photo-phobia, grittiness and burning sensation - -wearing lenses in high
altitudes and dry environments may result these complaints from the patient
-eyelids - -these are the first line of defense in the protective system of the
eye
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