Download The Eye - World of Teaching

THE EYE
Anatomy of the Eye
Common Disease of the Eye
Corneal Laceration
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James is a 22 yrs old martial arts athlete
who sustained a kick to his right eye 6
months ago.
He sustained injury to his right cornea
laceration due to the contact lens
He was seen by an opthalmologist and
treated for several weeks
But he still has blurred vision in his right eye
It is best seen under slit lamp, after
flourescin staining
Corneal Laceration
The corneal injury is visualised as a white patch on the
cornea
Flourescin Staining
Flourescin staining selectively stains damaged corneal
tissue
Further Treatment
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In full thickness corneal laceration, aqueous
humour may leak out resulting in distortion
of the shape of the eyeball.
He wanted to continue fighting, so further
treatment with
Phototherapeutic keratectomy (PTK) or
Corneal Transplant.
Failure to do so, he may not be able to clear
his Pre-participation examination with 'one
good eye'.
Cataracts
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Cataracts - clouding or opacification of the
natural lens of the eye
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Cataract Vision
How can cataracts be treated?
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The only treatment for cataracts is surgical removal.
Cataract surgery is the removal of the eye lens and replacing it
with an artificial one.
Two basic types of surgical procedures to treat cataracts
(1) Phacoemulsification - utilizes a small incision on the side of the
cornea to access the cataract with a tiny probe. Ultrasound is then
used to break up the lens for removal by suction. This is the most
popular kind of cataract surgery.
(2) Extracapsular surgery -This procedure requires a longer
incision. The cloudy core is removed intact followed by removal of
the remaining lens by suction.
If the eye is otherwise healthy, an intraocular lens may be used to
replace the natural, cloudy lens. This lens requires no care.
Post-operative orders carefully. Not to bend over or lift heavy
objects for a few days or weeks. A protective eye shield will reduce
the chances of injury to the eye.
Professor Fred Hollow’s
FRED HOLLOWS PERFORMING AN OCULAR
EXAMINATION IN VIETNAM
work to restore sight
to the cataract blind in
developing countries
was ongoing 15 years
after his death.
Cataracts are the
cause of about half of
all cases of avoidable
blindness in
developing countries
and they can be
removed with a
relatively simple
operation costing as
little as $25.
Retinal Detachment
Can be caused by
trauma – e.g.
boxing
 Sudden
acceleration and
deceleration –
bungee jumping,
car accidents
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Detached Retina
Avulsed Eye ball
Will it ever work again?
 What will need to be intact for it to
work?
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