Gourt > Health > Conditions and Diseases > Eye Disorders > Cornea (1)
The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber, providing most of an eye's optical power *. Together with the lens, the cornea refracts light and, as a result, helps the eye to focus. The cornea contributes more to the total refraction than the lens does, but, whereas the curvature of the lens can be adjusted to "tune" the focus, the curvature of the cornea is fixed.
The cornea has nerve endings sensitive to touch, temperature and chemicals; a touch of the cornea causes an involuntary reflex to close the eyelid. Because transparency is of prime importance the cornea does not have blood vessels; it receives nutrients via diffusion from the tear fluid at the outside and the aqueous humour at the inside and also from neurotrophins supplied by nerve fibres that innervate it. In humans, the cornea has a diameter of about 12 mm and a thickness of 0.5 mm - 0.7 mm in the center and 1.0 mm - 1.2 mm at the periphery. Transparency, avascularity, and immunologic privilege makes the cornea a very special tissue.
In humans, the refractive power of the cornea is approximately 45 dioptres, roughly three-fourths of the eye's total power.
More on [ Cornea ]
Well my eye is all red cuz i have a scratched cornea. ouch. I got some drops to help it heal now.
mswan6 (Matthew Swanson) Thu, 17 Dec 2009 00:09:07 -0000
Well my eye is all red cuz i have a scratched cornea. ouch. I got some drops to help it heal now.
poor jb, somehow scratched her cornea on trip to yosemite with group of urban youth & has to wear eye patch while supervising & hiking...
kengwen (kengwen) Wed, 16 Dec 2009 21:04:25 -0000
poor jb, somehow scratched her cornea on trip to yosemite with group of urban youth & has to wear eye patch while supervising & hiking...
I glimpsed Stephen Fry through a port ravaged cornea!....eeedx
josephrye (joseph rye) Wed, 16 Dec 2009 19:43:47 -0000
I glimpsed Stephen Fry through a port ravaged cornea!....eeedx
@xmayaarix omgad that is serious!!! your eyes are not to be messed with...=( my mother had a detached cornea...yup id go with glasses
xppinkx (xppinkx) Wed, 16 Dec 2009 19:27:54 -0000
@xmayaarix omgad that is serious!!! your eyes are not to be messed with...=( my mother had a detached cornea...yup id go with glasses
@LeoniKibbey I caught a bug that ate my cornea - having third transplant in Jan! Its a long story.
vobes (vobes) Wed, 16 Dec 2009 19:24:57 -0000
@LeoniKibbey I caught a bug that ate my cornea - having third transplant in Jan! Its a long story.
@xppinkx lots of eye problems, recently blood vessels in my cornea...my options are glasses or eye surgery to get lens implants
xmayaarix (DC) Wed, 16 Dec 2009 19:19:10 -0000
@xppinkx lots of eye problems, recently blood vessels in my cornea...my options are glasses or eye surgery to get lens implants
Corneal Dystrophy and Fuchs Syndrome - Information and research about the inherited eye disorder.
eMedicine Health - Corneal Abrasion - Consumer health resource center providing information on the causes, symptoms, and treatment for corenal abrasions.
Meta Description: [ Read about the causes, symptoms, treatment and prevention of corneal abrasion, a painful scrape or scratch on the cornea. ]
eMedicine Health - Corneal Flash Burns - Consumer health resource center providing information on the causes, symptoms, and treatment for corneal flash burns.
Meta Description: [ Eyes, particularly the cornea (the clear window of tissue on the front of the eyeball), can be damaged easily by exposure to ultraviolet radiation from the sun and from other ... ]
eMedicine Health - Corneal Ulcer - Consumer health resource center providing information on the causes, symptoms, and treatments for corneal ulcers.
Meta Description: [ A corneal ulcer is an open sore on the cornea, the thin clear structure overlying the iris, which is the colored part of your eye. ]
eMedicine Health - Hyphema - Consumer health resource center providing information on the causes, symptoms, and treatment of bleeding in the eye.
Meta Description: [ Trauma to the eye can cause bleeding in the front (or anterior chamber) of the eye between the cornea and the iris. This bleeding into the anterior chamber of the ... ]
eMedicine Health: Eye Injury - Resource center provides information on the causes, symptoms, and treatment of common eye injuries.
Meta Description: [ Eye injuries range from the very minor, such as getting soap in your eye, to the catastrophic, resulting in permanent loss of vision. ]
Fuchs' Corneal Dystrophy Headquarters - Information, coping tips, and support for people with this inherited eye disease.
Meta Description: [ Fuchs Corneal Dystrophy - Fuch's Corneal Dystrophy Support Group, Fuchs' Dystrophy as a medical condition including symptoms, diagnosis, misdiagnosis, treatment, prevention, and prognosis. Fuchs dystrophy is an inherited condition that affects the delicate inner layer of the cornea. corneal dystr... ]
My Corneal Transplant - Personal account of a corneal transplant which took place on Oct. 3, 2000.
Meta Description: [ My personal story of a child-hood eye injury that
and a corneal transplant of the right eye cornea more than fifty years after the
firecracker accident. ]
National Eye Institute - The Cornea and Corneal Eye Disease - Provides patient information including causes of corneal disease, prevention, and treatment. Includes pictures, diagrams, research studies and additional resources.
Meta Description: [ Publication describing the cornea's structure and function. Provides information on common corneal diseases and highlights of National Eye Institute-supported research. ]
Support Group for Corneal Dystrophy - Provides information and support for patients and families suffering with corneal dystrophy. There are message boards and private messaging available to members.
Symptoms of fuchs corneal dystrophy from personal experience - Common symptoms from the personal experiences of fuchs' patients.
Meta Description: [ A short description of some of the most common symptoms suffered by people with the eye disease Fuchs' Corneal Dystrophy. ]
Through A Glass, Darkly - A story of diagnosis and struggles with Fuchs' corneal dystrophy and description of a corneal transplant and healing. Has information about a support group for sufferers.
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