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NCLE Complete Review Questions And Answers With Verified Solutions 100% Correct!!!
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NCLE Complete Review Questions And Answers With Verified Solutions 100% Correct!!!
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NCLE Complete Review Questions AndAnswers With Verified Solutions 100%
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Adnexa Oculi - ANSWER✔✔ are the accessory structure that are considered part
of the eye, but not part of the eyeball itself. these structures include: eyelids,
eyelashes, tears, lacrimal apparatus, accessory glands and extrinsic muscles and
orbit. everything outside of the eyeball.
Meibomian Glands - ANSWER✔✔ Glands of the eyelids. sebaceous gland in the
eyelid behind the gray line
Glands of Zeiss - ANSWER✔✔ Glands of the eyelids. sebaceous oily gland and is
located around the eyelid cilia and follicles of the eyelashes
Glands of Moll - ANSWER✔✔ Glands of the eyelids. are sweat glands
Glands of Wolfring and Krause - ANSWER✔✔ Glands of the eyelids. located inside
the lids near the fornix and are accessory glands of the lacrimal gland
Lacrimal gland - ANSWER✔✔ Glands of the eyelids. secretes tears
Goblet Cells - ANSWER✔✔ Glands of the eyelids. secrete mucin and are found in
the lid conjunctiva
Conjunctiva - ANSWER✔✔ Lines the inside of the eyelids and covers the sclera
Has 3 parts: Palpebral, Bulbar & Fornix
,palpebral conjunctiva - ANSWER✔✔ covers inner surface of the eyelids
Bulbar Conjunctiva - ANSWER✔✔ covers the anterior part of the sclera. Helps
lubricate the eye by producing tears and mucus
Tear Film Functions - ANSWER✔✔ 3 Layers (Sebaceous/Lipid, Aqueous/Lacrimal,
Mucoid/Mucin)
Lipid - ANSWER✔✔ fatty
Aqueous - ANSWER✔✔ nutrients
Mucoid - ANSWER✔✔ wetting and lubrication
Break-up time - ANSWER✔✔ (BUT) - Interval between a complete blink and the
first randomly distributed dry spot (10-40 seconds in normal). under 10 seconds
could indicate marginal dry eye. fluorescein is used for this test
Schirmer Test - ANSWER✔✔ Determines if eye produces enough tears via placing
a strip in the lower eyelid. 35-40 mm of wetting from the lid indicates normal
lacrimal secretion inserted in eye 5mm strip
Rose Bengal - ANSWER✔✔ Reddish-purple dye used to detect damaged
superficial corneal and conjunctival cells
,Jones Test - ANSWER✔✔ Evaluates tear drainage system function. This test
measures the length of time for fluorescein dye to appear inside the nose after
being instilled in the cornea.
Upper lashes - ANSWER✔✔ are longer and curl up and there about 100 - 150
lashes
Bottom lashes - ANSWER✔✔ turn downward and number about 50 - 75
Corneal Topography - ANSWER✔✔ Transparent and Avascular- (no blood). Main
Refracting Surface of the eye. 75% of refraction takes place at the cornea. Convex,
aspheric and smooth and tends to flatten toward the periphery.
Average Refractive Power Of The Cornea - ANSWER✔✔ is about +43.00 D ***
Average Corneal Thickness - ANSWER✔✔ is about .52mm. .53 in center, thinner
and more rounded. .71 thicker and smaller at the periphery
Horizontal Visible Iris Diameter - ANSWER✔✔ 11.5 mm x 10.5 mm. HVID- normal
size of the iris fitting for the contact to fit this area
Apical Zone - ANSWER✔✔ Is a Zone of the Cornea. Regular in shape Largest in
center. Average size varies about 4-6mm. Referred to as Corneal Cap. Displaced
up and in nasally.
Apical Zone Points - ANSWER✔✔ Visual Center, Apex & Geometric Center of the
Cornea.
, Visual Center - ANSWER✔✔ the point where the visual axis passes through. Part
of the Apical zone.
Apex - ANSWER✔✔ steepest point on the cornea usually displaced up and in from
the geometric center. Part of the Apical zone.
Geometric Center Of The Cornea - ANSWER✔✔ Part of the Apical zone. The
intersection f widest ad shortest diameter of the cornea
Transition Zone - ANSWER✔✔ Is a Zone of the Cornea. Area between the Apical
zone and the limbus. Area of the cornea with the greatest aspheric curvature. In
this zone the cornea flattens out more temporally than nasally. 1 mm adjacent to
the sclera
Limbal Zone - ANSWER✔✔ Is a Zone of the Cornea. Area near the periphery of the
cornea about 1 mm adjacent to the sclera. Area is not well defined and blends
into the Transition Zone of the cornea
Sulcus - ANSWER✔✔ Depression or "ditch" around the cornea and is divides the
cornea from the sclera. Usually referred to as the external boundary of the cornea
Layers of the Cornea - ANSWER✔✔ Epithelium, Bowman's Membrane, stroma,
Descemet's Membrane, Endothelium
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