NEUROLOGY
OCULAR PALSIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Usually ONLY one layer of the tear film is affected.
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The integrity of the aqueous humor is affected.
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In most cases the deficiency is in several layers of the tear film.
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None of the above
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Detailed explanation-1: -Evaporative dry eye is characterized by increased tear film evaporation and a deficiency in the lipid portion of the tear film. In this case, the quantity of tears produced is normal; however, the quality of tears causes excessive evaporation. This alteration is most frequently caused by meibomian gland dysfunction.
Detailed explanation-2: -It can conceptually be thought of as having three major layers – inner mucin, middle aqueous, and outer lipid layer. The main lacrimal glands produce most of the aqueous tear layer, with small amounts produced by the goblet cells in the conjunctiva and accessory lacrimal glands.
Detailed explanation-3: -1 Dry eye syndrome, also known as keratoconjunctivitis sicca (KCS), is a common condition reported by patients who seek ophthalmologic care and is characterized by inflammation of the ocular surface and lacrimal glands.