It is the lack of vision. It may also refer to a loss of vision that cannot be corrected with glasses or contact lenses. Partial blindness means very limited vision and complete blindness is not being able to see anything at all. The most common causes are: cataracts, glaucoma, age related macular degeneration, corneal opacification, childhood blindness, refractive errors, trachoma, diabetic retinopathy and birth defects.
HOW IS BLINDNESS DIAGNOSED?
A thorough eye exam by an optometrist will help determine the cause of blindness or partial loss of vision. The doctor will administer a series of tests that measure the clarity of vision, the function of eye muscles, and how the pupils react to light. They’ll examine the general health of eyes using a slit lamp, which is a low-power microscope paired with a high-intensity light.
HOW IS BLINDNESS TREATED?
The various forms of treatment consist of measures like eye glasses or eye lens, surgery, and medication, depending on the cause of the blindness.
DID YOU KNOW?
In case of unexplained or complete blindness that mostly occurs from birth onwards, the doctor may ask the patient to lean Braille or get take other such measures.