As people age, their eyesight can deteriorate due to a variety of factors. One common condition is called presbyopia, which occurs when the 1 becomes less flexible and is no longer able to change shape easily. This 2 it difficult to focus on objects that are close up, such as when reading a book or using a computer. Presbyopia usually 3 after the age of 40 and becomes more pronounced as a person gets older.
Another common condition that affects older adults is cataracts. Cataracts occur when the lens of the eye becomes 4 and cloudy, causing vision to become blurry and dim. This can make it difficult to see clearly, especially in 5 light. Cataracts are often caused by exposure to UV rays from the sun and can be 6 by wearing sunglasses and a hat when outdoors.