What is the retina?

Retina. The retina is a layer in the back of the eye where cells sensitive to light are located.
The organ of vision. The retina is a multicellular, very thin membrane that lines the back of the eye and is packed with light receptors. It receives the focused image from the front of the eye, translates it into an electrical signal which goes up the optic nerve to make the magic image that we call vision. It is truly remarkable and so, so useful.
Sensorineural tissue. The retina lines the inside of the back wall of the eye and is responsible for capturing light, just like film in a camera. The retina converts this light information into electrical signals that get transmitted along the optic nerve to the brain for interpretation as vision. Similar to brain and spinal chord tissue, the retina is not able to regenerate itself after damage or injury.
Light sensitive part. Retina is the light sensitive part in the back of the eye, where light from outside world is focused ( like film in a camera). Light is processed in the retina and send to brain where the light is seen as an image. Damage to retina can lead to permanent loss of vision.

Related Questions

What is torn retina?

Flap in back of eye. The retina is the layer of cells that coat the back of your eye and collect light to allow you to see. When the retina becomes torn the layer is elevated off of its attachments to the eye. Please see your doctor to see if you can have this surgically corrected. Read more...
A hole . A torn retina increase ones risk for retinal detachment which is a sight threatening condition of not repaired. A tear can usually be treated with laser in the office lasting a few minutes. . Read more...

What is "digital retina imaging" and how long is the procedure?

~ 1 hour. You may be referring to retinal tomography, retinal photography, or a fluoroscein angiogram (fa). Retinal tomography takes ~ 30 min and may not require dilation. Retinal photos and fa require dilation and require ~ 60 min to perform. Read more...

What causes the retina ditach and how to prevent that?

Ophthalmology. While it may happen spontaneously it can happen after an injury to the eye. Eye protection if you are in a situation where injury is possible. Read more...

What's a detached retina and macular hole?

Retinal detachemnt. Retinal detachment is a detachment of the retina from the inside of the eye. The portion of retina that is detached leaves the vision completely black in the detached area. Retinal detachment is usually caused by a peripheral hole/tear of the retina. A macular hole is a hole in the center of the macula, the portion responsible for central vision causing varying degrees of loss. Read more...
Different disorders. Detached retina occurs in the periphery and can spread to involve the central vision, but sometimes are asymptomatic. Macular holes always cause symptoms of waviness, blind spots, or blurring. Both can be treated with retinal surgery. Macular hole closure rate is best when treated within the first 6 months of developing. There is a 10% risk of developing a hole in the second eye. Read more...
Big problem. A retinal detachment caused by a macular hole is a rare problem. It usually occurs in very nearsighted eyes (myopic). Fixing the macular hole fixes the detachment, but given the exact characteristics of such eyes make the fix difficult to achieve. Repairing the macular hole involves a vitrectomy surgery. Most of the times, macula holes occur without developing a retinal detachment. Read more...

What causes retina detachment?

Flashes floater veil. Vitreous separation ; traction on the retina causes retinal tears-causing vitreous floaters ; hazy vision. Laser helps to prevent the tear from progressing to a retinal detachment as fluid flows though untreated tears and the retina falls off the back of your eye-like wallpaper coming off a wall. This causes a veil in your side vision then central vision loss. It is painless. Read more...
Many things... Trauma, retinal tears, genetic predisposition, prematurity, retinal thinning and lattice formation, any type of intraocular surgery, diabetes and more. Read more...

What happens as diabetes retina problems get worse?

Vision loss. Uncontrolled diabetes can lead to a number of problems in the eye including, enlargement of blood vessels, overgrowth of blood vessels, bleeding in the eye, glaucoma and cataracts. All of these changes can lead to permanent vision loss. The key to preventing these changes is to control you blood sugar and to get yearly eye exams which include dilation, exam of the retina and check of eye pressure. Read more...
Excess glucose. Excess blood glucose can damage various tissues if persistent exposure is present. The tissues that seem particularly sensitive to excess glucose exposure are kidneys, nerves (esp lower extremities), and eyes. The retina cells are constantly regenerating, but this process is disrupted by persistent excess glucose in the blood that feeds the retina. Read more...

What is effect on retina from repeated diving from high platform?

No known Problems. There aren't any known retinal problems that you should expect to experience from this. Read more...