A cataract is the clouding of the lens. Crystallins are water-soluble structural proteins found in the lens of the eye; these are what are responsible for the transparency in the lens. These proteins are arranged in a precise way that keep the lens clear and let light pass through it. As we age, the proteins begin to clump together causing that part of the lens to cloud. Essentially it is the lens that is affected.
It damages eye and causes night blindness
There can be genetic contributions to blindness. Other causes can be eye trauma. Over or under exposure of the rods and cones in the eye, such as looking at the sun or being in a pitch black room for prolonged period of time. Certain drugs can cause blindness if taken in excess. Certain diseases such as glaucoma.
sore eyes, irritated eyes sore eyes, irritated eyes
color blindness
Color blindness is the failure of the red sensitive nerves in the eye that don't respond to light properly.
The first sign of Vitamin A deficiency is night blindness. Severe Vitamin A deficiency can cause Xerophthalmia (dry eye in which the eyes cannot produce tears) and complete blindness.
Blindness is fairly uncommon in cattle, but it can occur for several reasons. Blind cattle may be seen circling, knocking into objects and have no menace response ( they won’t blink when a hand is waved in front of their eye).
Eye blindness is the state of being sightless in one or both eyes.
One of the leading causes of blindness in the US, glaucoma results from a group of eye conditions which causes optic nerve damage due to abnormally high pressure inside the eye.
Visual disturbances include night blindness and increased sensitivity to light and glare.
It's not normal to be blind unless your eye is swollen shut. But it's common to have blurred vision.
retinitis pigmentosa, a condition that causes complete blindness.