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admin | Category: Ed Treatment For Migraine | 17.12.2015
Most retinal detachments are caused by the presence of one or more tears or holes in the retina. The vitreous is firmly attached to the retina in several places around the back wall of the eye.
Posterior vitreous detachment (vitreous separation from the retina) is a natural process of aging and usually does not lead to any damage of the retina. Note: It should be noted that there are some retinal detachments that are caused by other diseases of the eye such as tumors, severe inflammations, or complications of diabetes. In some patients the formation of a retinal tear is preceded by flashes of light, which are indicative of pull (traction) on the retina.
However in the majority, retinal holes are completely asymptomatic, as they usually occur in the periphery of the retina and not in the visually important central part. It should also be noted that 'floaters' are very commonly seen by people who have no eye disease.
Floaters can get in the way of clear vision, which may be annoying when you are trying to read.
People more prone to developing retinal degeneration, holes and tears, and subsequently retinal detachment are myopes (near sighted persons), aphakics (people who have undergone cataract surgery), those with a family history of retinal detachment and people with symptoms like light flashes and onset of a large number of floaters. These groups of patients must undergo regular and thorough retinal examination by indirect ophthalmoscopy. A careful examination of your retina by binocular indirect ophthalmoscopy as mentioned above will be done. A few detachments may occur suddenly and the patient will experience a total loss of vision in one eye. Vitreous gel, the clear material that fills the eyeball, is attached to the retina in the back of the eye. Vitreous fluid normally shrinks as we age, and this usually doesn’t cause damage to the retina.


Get ophthalmologist-reviewed tips and information about eye health and preserving your vision. Normal aging can sometimes cause the retina to thin and develop holes, but more often these are caused by shrinkage of the vitreous body (posterior vitreous detachment). As the vitreous shrinks with aging, it may pull a piece of retina with it, leaving a tear or hole in the retina.
These so-called secondary detachments do not have tears or holes in the retina and treatment of the disease that caused the retinal detachment is the only treatment that may allow the retina to return to its normal position. In others, the tear may break a small blood vessel in its path causing a small hemorrhage (bleeding), with blurring of vision and 'floaters'.
They are seen as small specks, circles, lines, clouds or cobwebs moving in one's field of vision. You can try moving your eyes; looking up and then looking down to move the floaters out of the way. If you notice the sudden appearance of light flashes, you should visit your ophthalmologist immediately to see if your retina has been torn. In those instances, patients may notice a wavy or watery quality in their overall vision or the appearance of a dark shadow in some part of their side vision. Similar rapid loss of vision may also be caused by bleeding into the vitreous when the retina is torn. Therefore, if the above symptoms are noticed, an ophthalmologist should be visited as soon as possible. It acts like the film in a camera -- images come through the eye's lens and are focused on the retina. However, inflammation (swelling) or nearsightedness (myopia) may cause the vitreous to pull away and result in retinal detachment.
While some floaters may remain in your vision, many of them will fade over time and become less bothersome.


During this painless examination, your ophthalmologist will carefully observe your retina and vitreous and look for holes and weak areas. Further development of the retinal detachment will blur central vision and create significant loss of sight in the eye unless the detachment is repaired. Again, binocular indirect ophthalmoscopy through dilated pupils is essential to thoroughly examine the retina.
The retina then converts these images to electric signals and sends them via the optic nerve to the brain. The retina is normally red due to its rich blood supply.
However you should visit your ophthalmologist if you suddenly notice new floaters because you need to know if your retina is torn.
Other special instruments including contact lenses, slit lamp and ultrasound may also be used. An ophthalmoscope allows a health care provider to see through your pupil and lens to the retina.
Once a retinal tear occurs, vitreous fluid may seep through and lift the retina off the back wall of the eye, causing the retina to detach or pull away. These scars can be produced by the heat of a strong light source (laser photocoagulation), or by controlled freezing (cryotherapy).
A retinal detachment occurs when the retina is pulled away from its normal position in the back of the eye. Both cryotherapy and photocoagulation are usually carried out as an outpatient procedure.



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