The most common reason behind blindness is mostly considered to be cataract. Cataract is also known as cloudy lenses. It is a disease in which the lense protein i.e. crystallins start twisting in a wrong way which tends to clump together and due to this situation, people suffer from cataract. People from all over the world go through with this disease.
Till now, the only way to deal with it was with effective surgerical methods. The surgery takes up a lot of prescriptions, finance, risks etc. which is not suitable for all the common people to handle. Especially in the developing countries, it is hectic for people to have enough finance to opt the surgery for treating cataract.