5 Diseases Eye That Cause Blindness
The inability to see anything even the daylight called blindness. In some cases, the vision is limited called partial blindness, the person has blurred vision and unable to discriminate between color and shapes and people.
There is a term used called legal blindness which means the vision is highly compromised. In case someone suddenly experiences the ability to see things. It can be a sign of some major problem. Depending upon the causes of blindness the treatment increases the chances to restore the eye site.
Some possible diseases that cause blindness;
To detect the eye vision problem, the treatment can restore the eye site. Here is some disease that causes blindness
1. Glaucoma;
The Glaucoma is a disease that affects the optic nerve in the eyes. The optic never supplies visual information to the brain once the image is formed in the retina. This disease occurs due to the high pressure inside the eyes. The increase pressure damage the optic nerve tissue may lead to blurred vision and if left untreated can cause blindness.
The back of the eye is continuously making a fluid called aqueous humour. After making it fill the front part of the eyes. This fluid leaves the eye and enters to Cornea and iris. If the channel is blocked by any mean it exerts pressure in the nerve tissue and results in damaging eye vision.
2.Tay-Sachs Disease;
This is a neurodegenerative disease of the central nerves system. This disease most commonly affects the infant which is a progressive disease and fatal in nature. The teen and adults are also prone to this disease.
In this disease, the nerve damages start in the fetus. The symptoms appear at 3 to 6 months which is fatal. In late cases of onset of tay-sachs disease in javelin and adults can be chronic or in some cases the severity ranges from mild to server. This disease has mix symptoms like other areas are also affected like speech, hearing, muscle problems, tremors and memory loss.

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3. Optic Neuritis;
The optic neuritis is the condition where the optic nerve becomes inflamed. The optic never suddenly can have inflamed due to an eye infection and causes disruption between eyes and brain connection.
The inflammation causes temporary vision loss in one eye with pain. As pain inflammation go away causes the vision resort. This condition did not require treatment and go away with time.

4. Retinal Vascular occlusion;
The retinal vascular effects the eyes especially the eye part called retina. The retina is a light-sensitive layer of the tissues in the back of the eyes. This layer is cover with tissues called cones and rods which convert light into neural signal and send this to the brain.
The vascular system is consisted of never that supplies blood in the whole body. The retina requires to continue the supply of blood nutrient and oxygen and take away waste from the retina.
When any vein gets any blood clot in way retina that can cause blocking in retina way and causes accumulation of fluid. When the light is blocked it causes sudden loss of vision. It is a serious condition and may cause blindness.
5. Diabetic Retinopathy;
This condition occurs as a result of damaged blood vessels of the retina in people who have diabetes. It occurs in type 1 and types 2 diabetes. This damage occurs due to the high level of blood sugar. The initial symptoms are losing of mild sight which can follow the complete loss of sight if left untreated.
The patient sing floaters and dark spot, others may fail to see at night and in some cases they lose the ability to differentiate between colors.

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