10 page notes on the Human eye and about it all functions. Detailed and easy to understand notes. Includes break down of the different parts with their functions and structure and describes how the eye works. Included the 4 main visual defects, their causes and their treatments
Answer: 1. lachrymal gland- produces salty tears; washes away dust; keeps Conjuctivita moist
2. glands of Meiboom - secrete oily fluid to lubricate the eyeball
3. eyeball+eyelids - protect the eye from dust, too much light and foreign bodies
2.
What is the main function(s) of Conjunctiva?
Answer: 1. pain receptors which close the eye on reflex
2. Lubricates the eyes to prevent drying
3.
What is the main function(s) of the Sclera
Answer: 1. Protects internal parts of eye
2.Provides point of attachment for 6 extrinsic muscles
3. Maintains shape of the eye
4.
What are the main functions of the Cornea?
Answer: 1. Allows light-rays to pass trough light sensitive cells
2. Causes converging refraction of light-rays
5.
Which (rods/cones) respond to high-intensity light?
Answer: Cones
6.
Which (rods/cones) respond to low intensity light?
Answer: Rods
Content preview
Honan Eye
where 1S he aye sitva ted 7
it is At nto a bony Secket Itated in anterory craniom,
ks postiored by 6 external mscles whch ontd tt's. tnevement.
ls ashoned by pcsteriorly atty Hssue.
Exkernal features of he eye
lachrymalgicnd-produces Salty teors
washeS awau dust
-keeçs onjcHvita most
-tear Meuw
Sand
Meiboon
Secrebe oil flotd
tear duct dran excess
to icorlcafe the yebal cyelashes teyel1ds floid into ragal auty
-prckect the eye fam dust,
too mUch tije and erelgn
boclies
, A, LayerS of the wall at the cye.
. Outer fbrous caat.
Conjanchva
delicate mucous membrane that covers the breont
the gs and lines the eyelds.
, n receptors unch relegively clese the eyés spreuensig::
fore.gn bodies Pren enterirg.
2. Lubtcates eyes to prevent them from drying aut
Sclera
taugh hite inelastc layer made upa cohnechve tiouve
and coves 5l6 o he eyebdl.
I. Pro fecks nternal pack ot eye.
a. Provides points t attachment for 6 atriosie muscle
3. Maintains shape at the eye
Cornea
Coninuaton of sclerc, 6 l eyeball,
G more convex (ouigu)
transarent (no bleod vegsel)
Ocovered by conjnchva
. Alous_ ioht-rays to ass thrugh hght sesitlve cels.
2. Causes converqiq rehachon of ight
raus.
2 Hiddle vascalar layer
Chorold.
-_thin dare ayer ontaning oomentr and Bood
1.Ponent asorbs excess Ilght b prevent iury vsion (rlechonVeSSes.
in eye)
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