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Human Anatomy
Endocrine
Cardiovascular
Nervous
Skeletal
Muscular
brain
eye
lungs
liver
kidney
large intestine
anal intestine
Human Eye Anatomy
Anterior chamber
Aqueous body
Cornea
Pupil
Lens
Iris
Ciliary body
Suspensory ligament
Vitrous body
The human eye is a complex, fluid-filled, spherical organ composed of fibrous
tissue (ligaments, muscles), and refracts light to capture light
and create vision. Key structures include the
cornea (clear outer layer that focuses light
into the eye), the iris (which controls pupil size to control
the amount of light entering the eye), and the lens (which further focuses
light onto the retina). The retina contains photoreceptor cells that convert
light into electrical signals, which are then sent to the brain via the optic
nerves.
Eye diseases
Normal Eye
Pterygium
Pinguecula
Pterygium (surfer's eye) is a non-cancerous, triangular-shaped growth of
conjunctiva (the clear membrane covering the white of the eye). It typically
appears on the inner corner of the eye. It causes irritation, redness, and
can sometimes grow onto the cornea, affecting vision. It is often caused by
exposure to UV light, dry conditions, and wind.
Symptoms:
Besides the visible growth, symptoms
include redness, dryness, itching,
tearing, and in advanced cases,
blurred vision or astigmatism.
Causes & Risk Factors:
The primary cause is high exposure
to ultraviolet (UV) radiation from
the sun. Other major factors include
dry, sandy, or dusty environments,
and it is more common in adults,
especially those living near the
equator.
Prevention:
The best prevention method is
wearing UV-protective eyewear, such
as wide-brimmed hats and sunglasses.
Treatment:
Small, asymptomatic, or mild cases
may be managed with lubrication or
steroid eye drops. For significant
growth that affects vision or
causes severe, persistent irritation,
surgery is the recommended
treatment, usually involving an auto-
graft to reduce recurrence rates,
which are now often below 10%.
Conjunctiva (the clear membrane
covering the white of the eye). I
usually found on the inner side of
eye near the nose and is gener-
ally harmless, though it can cause irri-
tation or dry eye sensation.