Cách sử dụng
'Cataract' is a word that is used to describe a condition that affects the eyes. It is when the lens inside the eye becomes cloudy and makes it difficult to see clearly. This can make things appear blurry or dim, and can even cause some people to experience a complete loss of vision. This condition can often be treated with surgery, but it's important to see an eye doctor if you notice any changes in your vision.