Grade (New Updated Version,2025/2026 Exams of Nursing|Graded
A+|Success assured
Reflex tears - ANSWERS-Produced by lacrimal glands & are caused by stimulus
such as coughing, sneezing, strong smells & emotions
Layers of tear film (outer-innermost) - ANSWERS-Lipid, aqueous, mucin
Tear lake, tear prism, tear meniscus - ANSWERS-Collection of the thin film of tears
on the lower lid margin
Ectropia - ANSWERS-Eyelids turn outward
Entropion - ANSWERS-Eyelids turn inward
Conjunctiva - ANSWERS-Mucous membrane lining lids & globe
Goblet cells - ANSWERS-produce mucus
Conjunctivitis - ANSWERS-inflammation of the conjunctiva
First tunic (outer tunic) - ANSWERS-Sclera, cornea, limbus
, 2nd tunic (middle tunic) - ANSWERS-Sclera-retina (iris, ciliary body, choroid)
3rd tunic (inner tunic) - ANSWERS-Retina
Outer tunic - ANSWERS-Fibrous; receives O2 from tears and blood vessels
Layers of the cornea (outermost-innermost) - ANSWERS-Epithelium, Bowman's
layer, stroma, descements membrane, endothelium
Epithelium - ANSWERS-Has 5-7 layers
Bowman's layer - ANSWERS-If damaged, scar tissue will form
Endothelium - ANSWERS-If deprived of O2, will lost cells quickly & cause swelling
Average power of the cornea - ANSWERS-42.00-45.00 diopters
Canal of Schlemm - ANSWERS-Encircles the lumbar region; where aqueous drains
into the trabecular meshwork
Middle tunic - ANSWERS-vascular