NAO Book 1 – Questions With Accurate Solutions

NAO Book 1 – Questions With Accurate Solutions

Save Groups




Practice questions for this set


Learn 1 /7 Study using Learn




National Academy of Opticianry (NAO)



Choose an answer



Layers of the cornea (outermost-
1 Reflex tears 2
innermost)



Which organization places primary
3 Entropion 4 focus on education and training for
opticians?



Don't know?




Terms in this set (95)



Reflex tears Produced by lacrimal glands & are caused by
stimulus such as coughing, sneezing, strong smells &
emotions


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

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


Ectropia Eyelids turn outward


Entropion Eyelids turn inward


Conjunctiva Mucous membrane lining lids & globe


Goblet cells produce mucus


Conjunctivitis inflammation of the conjunctiva


First tunic (outer tunic) Sclera, cornea, limbus


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


3rd tunic (inner tunic) Retina


Outer tunic Fibrous; receives O2 from tears and blood vessels


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


Epithelium Has 5-7 layers


Bowman's layer If damaged, scar tissue will form


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


Average power of the cornea 42.00-45.00 diopters


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