Cataract

Protein and water make up most of the lens in person’s eye. Protein is arranged to let light pass through and focus on the retina. A cataract forms when some of the protein clumps together, clouding small areas of the lens and blocking some light from reaching the retina, interfering with vision. Cataracts usually occur as people age. Though, some cataracts are congenital or develop during childhood. Secondary cataracts most often occur in people with other condition, such as diabetes. Traumatic cataracts may occur following an eye injury or years later.

Glaucoma

While generally thought of as one disease, Glaucoma is instead a group of diseases that cause damage to the optic nerve. In most cases, due to increased pressure within the eye. As the optic nerve deteriorates, peripheral vision is gradually lost. If let untreated will eventually lead to a total blindness.

Retinal Detachment

A retinal detachment occurs when the retina is pulled away from its normal position. This is a very serious condition that almost always causes blindness unless treated. A detachment can occur anywhere in the field of vision where the retina may be weakened. Weakness in the retina may occur as a result of a number of things including; injury, previous cataract surgery, glaucoma, nearsightedness, family history, or previous detachment in the other eye. Symptoms of retinal detachment are flashing lights, floaters and what appears to be gray/black curtain moving across the field of vision.

Total Blindness

80% of legally blind people can see something, though those born totally blind can’t really express what they see, as they have no concept of colour or light. Those that go blind later in life can more accurately explain what they can or cannot see. Total Blindness may occur due to any number of things, some we don’t even know.

Diabetic Retinopathy

One of the leading causes of blindness, Diabetic Retinopathy occurs due to complications from diabetes. It causes blurred, patchy vision in areas that are damaged due to changes in the small blood vessels that nourish the eye. In advance stages, connective scare tissue forms in association with vessel growth causing addition distortion and blurriness and over time this tissue can shrink causing Retinal Detachment.

Macular Degeneration

Another leading cause of blindness, especially in older people, Macular Degeneration results from the deterioration of the macula, a portion of the retina responsible for clear sharp vision.

Retinitis Pigmentosa

Tunnel vision is commonly associated with Retinitis Pigmentosa (RP), a progressive eye disease in which ones peripheral vision is lost.

Nystagmus

Nystagmus is characterized by an involuntary movement of the eyes, which may reduce vision or be associated with other, more serious, conditions that limit vision, like Achromatopsia. Nystagmus may be one of several infantile types or may be acquired later in life.

• Learning recovery techniques in cases of disorientation
• Using remaining vision for safe travel, sometimes with the use of low-vision devices
• Using a white can or adaptive mobility device
• Crossing streets
• Using public transportation