NAO BOOK 1 UPDATED EXAM Questions And CORRECT Answers

NAO BOOK 1 UPDATED EXAM Questions And
CORRECT Answers
Reflex tears - CORRECT ANSWERS Produced by lacrimal glands & are caused by stimulus
such as coughing, sneezing, strong smells & emotions



Layers of tear film (outer-innermost) - CORRECT ANSWERS Lipid, aqueous, mucin



Tear lake, tear prism, tear meniscus - CORRECT ANSWERS Collection of the thin film of
tears on the lower lid margin



Ectropia - CORRECT ANSWERS Eyelids turn outward



Entropion - CORRECT ANSWERS Eyelids turn inward



Conjunctiva - CORRECT ANSWERS Mucous membrane lining lids & globe



Goblet cells - CORRECT ANSWERS produce mucus



Conjunctivitis - CORRECT ANSWERS inflammation of the conjunctiva



First tunic (outer tunic) - CORRECT ANSWERS Sclera, cornea, limbus



2nd tunic (middle tunic) - CORRECT ANSWERS Sclera-retina (iris, ciliary body, choroid)



3rd tunic (inner tunic) - CORRECT ANSWERS Retina

, Outer tunic - CORRECT ANSWERS Fibrous; receives O2 from tears and blood vessels



Layers of the cornea (outermost-innermost) - CORRECT ANSWERS Epithelium, Bowman's
layer, stroma, descements membrane, endothelium



Epithelium - CORRECT ANSWERS Has 5-7 layers



Bowman's layer - CORRECT ANSWERS If damaged, scar tissue will form



Endothelium - CORRECT ANSWERS If deprived of O2, will lost cells quickly & cause
swelling



Average power of the cornea - CORRECT ANSWERS 42.00-45.00 diopters



Canal of Schlemm - CORRECT ANSWERS Encircles the lumbar region; where aqueous
drains into the trabecular meshwork



Middle tunic - CORRECT ANSWERS vascular



Inner tunic - CORRECT ANSWERS Light sensitive



Anterior chamber - CORRECT ANSWERS Back surface of the cornea & the iris



Posterior chamber - CORRECT ANSWERS Between the iris and crystalline lens