NAO Book 1 – Questions With Accurate Solutions
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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
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
