Cataracts are whitish or cloudy patches that form in the lens of the eye and cause vision to become hazy or blurry. The most frequent cause of vision impairment in the globe is cataracts.
One or both eyes may acquire cataracts, which obstruct the path of light through the lens. Normally translucent, the lens lets light reach the retina at the back of the eye. However, cataracts result in the lens becoming opaque, and as cataracts increase in size or quantity, vision gradually deteriorates as less light can get through the lens.
The structures that make up the eye include:
The vitreous humor, which resembles jelly, fills the eyeball.
Conjunctiva: The delicate membrane that covers the sclera (white of the eye)
The clean, translucent covering that covers the pupil and allows light to pass through is called the cornea.
The translucent part of the eye’s front that lets light through is called the lens.
Behind the lens is a thin nerve membrane called the retina that senses light entering the eye. To form a picture, retinal nerves communicate with the brain via the optic nerve.
The optic nerve transports data from the retina to the brain, where it is translated into vision.
The eye’s strong outer layer or white is known as the sclera.
The iris, ciliary body, and chord are all parts of the vascular middle layer of the eyeball known as the uvea.
Orbit: The eyeball is housed in this hollow.
Symptoms and danger signs
Vision blurring is one of the initial signs of cataracts. As the lens becomes more cloudy, sight is further compromised until it is completely lost in the affected eye. The disorder typically has no associated pain.
However, certain types of cataracts can also harm children and infants. Cataracts typically affect the elderly. Other risk factors for cataracts include smoking, a family history of the disease, an unhealthful diet, excessive sun exposure, long-term steroid usage, and diabetes.
High-power eyeglasses and brighter reading lights may be helpful for moderate cataracts. But when the problem worsens, surgery on the eye might be necessary. One of the most well-liked and efficient forms of cataract therapy is surgery. The damaged lens is removed during surgery, and a replacement artificial lens is used.