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NAO Book 1 – Questions With Complete Answers
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NAO Book 1 – Questions With Complete Answers
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NAO Book 1 – Questions With Complete AnswersReflex tears Right Ans - Produced by lacrimal glands & are caused by
stimulus such as coughing, sneezing, strong smells & emotions
Layers of tear film (outer-innermost) Right Ans - Lipid, aqueous, mucin
Tear lake, tear prism, tear meniscus Right Ans - Collection of the thin film
of tears on the lower lid margin
Ectropia Right Ans - Eyelids turn outward
Entropion Right Ans - Eyelids turn inward
Conjunctiva Right Ans - Mucous membrane lining lids & globe
Goblet cells Right Ans - produce mucus
Conjunctivitis Right Ans - inflammation of the conjunctiva
First tunic (outer tunic) Right Ans - Sclera, cornea, limbus
2nd tunic (middle tunic) Right Ans - Sclera-retina (iris, ciliary body,
choroid)
3rd tunic (inner tunic) Right Ans - Retina
Outer tunic Right Ans - Fibrous; receives O2 from tears and blood vessels
Layers of the cornea (outermost-innermost) Right Ans - Epithelium,
Bowman's layer, stroma, descements membrane, endothelium
Epithelium Right Ans - Has 5-7 layers
Bowman's layer Right Ans - If damaged, scar tissue will form
Endothelium Right Ans - If deprived of O2, will lost cells quickly & cause
swelling
, Average power of the cornea Right Ans - 42.00-45.00 diopters
Canal of Schlemm Right Ans - Encircles the lumbar region; where aqueous
drains into the trabecular meshwork
Middle tunic Right Ans - vascular
Inner tunic Right Ans - Light sensitive
Anterior chamber Right Ans - Back surface of the cornea & the iris
Posterior chamber Right Ans - Between the iris and crystalline lens
Anisocoria Right Ans - unequal pupil size
Iritis Right Ans - inflammation of the iris
Sphincter Right Ans - Muscle that constricts, causing the pupil to become
smaller
Dilator Right Ans - Muscle dilates causing the pupil to become larger
Floaters Right Ans - Located in the vitreous
Aphakia Right Ans - Absence of the crystalline lens
Presbyopia Right Ans - loss of accommodation
6 extraocular muscles Right Ans - Medial rectus, lateral rectus, inferior
rectus, superior rectus, superior oblique, inferior oblique
-tropia Right Ans - A definite turning of the eye
Tear film Right Ans - How the cornea primarily received it's nutrients
Irregular astigmatism Right Ans - A refractive condition caused by a cornea
which is damaged and irregular so that rays of light come to many focal points
on the retina; is not correctable by cylinders.
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