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NAO Book 1 Exam Study Guide Questions and Answers

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NAO Book 1 Exam Study Guide Questions and Answers Reflex tears - ANSWER-Produced by lacrimal glands & are caused by stimulus such as coughing, sneezing, strong smells & emotions Layers of tear film (outer-innermost) - ANSWER-Lipid, aqueous, mucin Tear lake, tear prism, tear meniscus - ANSWER-C...

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  • October 30, 2024
  • 9
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NAO
  • NAO
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NAO Book 1 Exam Study Guide Questions

and Answers


Reflex tears - ANSWER✔✔-Produced by lacrimal glands & are caused by stimulus such as coughing,

sneezing, strong smells & emotions


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


Tear lake, tear prism, tear meniscus - ANSWER✔✔-Collection of the thin film of tears on the lower lid

margin


Ectropia - ANSWER✔✔-Eyelids turn outward


Entropion - ANSWER✔✔-Eyelids turn inward


Conjunctiva - ANSWER✔✔-Mucous membrane lining lids & globe


Goblet cells - ANSWER✔✔-produce mucus


Conjunctivitis - ANSWER✔✔-inflammation of the conjunctiva


First tunic (outer tunic) - ANSWER✔✔-Sclera, cornea, limbus



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


3rd tunic (inner tunic) - ANSWER✔✔-Retina


Outer tunic - ANSWER✔✔-Fibrous; receives O2 from tears and blood vessels


Layers of the cornea (outermost-innermost) - ANSWER✔✔-Epithelium, Bowman's layer, stroma,

descements membrane, endothelium


Epithelium - ANSWER✔✔-Has 5-7 layers


Bowman's layer - ANSWER✔✔-If damaged, scar tissue will form


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


Average power of the cornea - ANSWER✔✔-42.00-45.00 diopters


Canal of Schlemm - ANSWER✔✔-Encircles the lumbar region; where aqueous drains into the trabecular

meshwork


Middle tunic - ANSWER✔✔-vascular


Inner tunic - ANSWER✔✔-Light sensitive


Anterior chamber - ANSWER✔✔-Back surface of the cornea & the iris




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