OCULAR ANATOMY AND OCULAR PHYSIOLOGY
2.
Anatomy of angle of anterior chamber and maintenance of intraocular pressure.
Anatomy
of angle of anterior chamber
· The eye consist more part, like layers, coats, chambers, filling fluid, bony cavity, eye muscles, blood supply (arteries and veins), nerve innervation (optic nerve) ….ect
· chambers are mainly 3 in each one eye, name of anterior to posterior and filling fluids
are
1. anterior chamber
2. posterior chamber
3. Vitreous chamber
· anterior chamber and posterior chamber fill with aqueous humor clear plasma-like fluid
· Vitreous chamber fill with vitreous body is a transparent
gel
· Location of each chambers
· Anterior chamber - between cornea and iris
· posterior chamber - between iris zonule fibers and lens
· vitreous chamber - between lens and retina
· Angle of anterior chamber
· the angle of anterior chamber is part of eye,
that located in between cornea and iris.
· the size of angle is determined - rate of
aqueous humor flow out and intraocular pressure.
· it situated in depth of the anterior chamber.
· extremely narrow angle of anterior chamber is a
feature a kind of glaucoma called angle closure glaucoma.
Maintenance of intraocular
pressure (IOP)
· the fluid pressure inside eye is called
intraocular pressure.
· tonometer used to measure/determine by eye care
professionals. (mmHg) measure force per area
· normal pressure rage is 10-21(20) mmHg, occur
hypertension to cause eye pressure generate than 21 mmHg.
· Tonometer test by different way, firstly put
on numbing eye drops and touch your eye with tip of a tool or rarely used quick
puff of air onto eye.
· Intraocular pressure support shape of the eye.
· Fluid drain resistance in front of eye or
production of too much fluid. The
eye pressure increase called as occur hypertension.
· Ocular hypertension lead to glaucoma. Group of eye diseases cause
blindness.
· Glaucoma doesn’t cause any pain and no any
changes in your vision during 1 year period. Measure your eye pressure help to
early identify it. .
· IOP measure important for before identifying
risk of glaucoma.
· Normal pressure in eye change day and differ
from person to person.
· The fluid drain freely to keep eye pressure
steady.
Low
eye pressure
· Low eye pressure cause leak fluid after eye
surgery. This situation some people may be blurry vision.
· Eye pressure below 5 mmHg called as ocular
hypotony,
· Ocular hypotony cause to cataracts, swelling in
retina, damage to retina and discomfort.