Vision - Frequent Causes of Low Vision

Low vision is a term commonly among nationals for visual impairment or eye sight, does not mean fully correctable with surgery, pharmaceuticals, contact lenses or eyeglasses. Low vision is for a variety of diseases that cause disturbances and injuries that affect the eye. Low vision may also be hereditary. Many people with low vision have age-related macular degeneration, cataract, glaucoma, diabetic retinopathy, or. Age-related macular degeneration accounts for almost 45Percent of all cases of low vision.

Listed below are some of the most common causes of low vision:



Albinism. Albinism results from a lack of pigment. Some types of albinism affect only the eyes (eye), while) other forms of influence skin and hair color and eyes (oculocutaneous. Albinism is inherited.
Aniridia. Aniridia is the partial or complete absence of the iris of the eye. The absence of the iris results inLoss of vision, light sensitivity and visual field defects.
Aphakia. Aphakia is the absence of the lens of the eye, which prevents the ability to adjust focus between objects at different distances.
Cataracts. Cataracts result from the lens of the eye is cloudy or opaque. The opacity may occur over the entire lens or a small area in the lens. Surgical removal of cataracts can lead to aphakia.
Coloboma. Coloboma is a birthErrors during the development of the fetus resulting in an underdevelopment, such as a column in the pupil, iris, ciliary body, lens, retina, choroid or optic nerve.
Glaucoma. Glaucoma is a disease characterized by an increase in pressure inside the eye, often by improper disposal of fluids, can cause damage to eye structures such as the optic nerve.
Macular degeneration. Macular degeneration involves the gradual loss of sensitivity of thecentral part of the retina. Since this is the area of the retina, associated for detail vision, macular degeneration often see with the loss of central vision and the ability to fine details.
Nystagmus. Nystagmus is the involuntary movement of the eyes, which are preserved in the inability to use a steady fixation. The movement can be horizontal, vertical, circular or mixed.
Optic atrophy. Optic atrophy is a degeneration of the optic nerve.Loss of function of the optic nerve leads to a reduced ability to transmit electrical signals to the visual cortex of the brain.
Optic nerve hypoplasia. This is a condition in which reduced the number of nerves within the optic nerve bundle.
Retinitis pigmentosa. This is a progressive degeneration of the retina, causing night blindness and peripheral loss.
Retinopathy of prematurity. This is a condition in which thenormal growth of blood vessels in the retina is disrupted during fetal development, often due to circumstances premature birth. This condition can lead to an increased risk of retinal tears or retinal detachment.

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