In simple words, cataract is a clouding on the lens within the eye that affects the vision. In an eye, light passes through the transparent lens to the retina. When it reaches the retina, light is changed into nerve signals that are sent to the brain. The lens must be clear for the retina to receive a direct image. If the lens is cloudy because of a cataract, the image you see will be blurred.
There are basically three sorts of cataracts subcapsular, nuclear and cortical. Subcapsular cataract majorly happens at the back of the lens. People with diabetes or those taking high doses of steroid medications are at a higher risk of developing this type of cataract.
On the other hand, cortical cataract occurs in the lens cortex, which is the part of the lens that surrounds the central nucleus. It is characterised by white, wedge-like opacities that start in the periphery of the lens and work their way to the centre in a spoke-like. The third sort, that is a nuclear cataract form deep in the nucleus of the lens and is usually associated with ageing.
Cataracts usually form slowly. You may not know you have them until they start blocking the vision. After that, you might notice symptoms such as clouded, blurred or dim vision, increasing difficulty with vision at night. The only way a cataract can be diagnosed technically is by visiting the eye specialist for an eye check-up. Your eye doctor will give you a task to test how well you can see. He’ll also widen your pupil to check the lens and other parts of the eye. Remember to carry your glasses or contacts when you visit the doctor.
A healthy diet is a solution to all the health problems, and so for cataract prevention. Consuming products like salmon is incredibly good for your eyes as it is dense in astaxanthin, which shields the eyes from free-radical damage and helps decelerate the formation of cataracts. Furthermore, orange juice can also help in reducing the risk of cataract, as it contains lenient amounts of vitamin C which is vital for a healthy eye.
Other food items like carrots, egg yolks, avocados are also good for your eyes. Egg yolks contain balanced amounts of both lutein and zeaxanthin, both of which protect the eyes against the sun’s harmful rays.