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NCLE Practical Latest Update 100% Solved
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NCLE Practical Latest Update 100% Solved
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NCLE Practical Latest Update 100% Solvedrefractive index of the cornea -Answer 1.376
making the refractive power +48.75
aqueous has a refractive index of -5.75
making the total power +43.00
HVID -Answer horizontal visible iris diameter
measurement of the cornea
11 to 12 mm
VVID -Answer vertical visible iris diameter
9 to 11mm
TBUT -Answer tear break up time, the interval between blinks and no corneal drying takes
place
lacrimal lake -Answer is the pool of tears in the lower conjunctival cul-de-sac, which drains
into the opening of the tear drainage system (the puncta lacrimalia). The volume has been
estimated to be between 7 and 10 μL (micro-liter)
also known as tear lake, tear prism, and tear meniscus
frontalis muscle -Answer allows the eyelid to droop or sag
, reflex tears -Answer produced by the lacrimal glands and are generally caused by stimulus
such as coughing, sneezing, strong smells, emotions
Basic Tear secretion -Answer produced by glands of wolfring and glands of krause
lipid layer -Answer layer of the tear film that is responsible for prevention of evaporation
aqueous layer -Answer layer fo the tear film that contains the nutrients and antibiotic
properties
mucin layer -Answer the layer of the tear film that is responsible for holding the tears on
the
cornea
goblet cells -Answer produce mucus
outer tunic -Answer is fibrous and consists of the sclera, cornea, and limbus
middle tunic -Answer is vascular and consists of the sclera and retina
inner tunic -Answer is light sensitive and consists of the retina
Bowman's alyer -Answer second layer of the cornea, will form scar tissue if damaged
endothelium -Answer 5th layer of the cornea. If the eye is deprived of oxygen this layer
will
lose cells more quickly and cause swelling
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