The 62-year-old Liu wore presbyopic glasses at the age of 46, and every three to five years to replace a pair of deep degree, but in the last year he read the newspaper, actually found that not wearing presbyopic glasses can also see clearly, Liu’s heart was pleased: is not ” The son, who is an internist, feels that he can see clearly without presbyopic glasses. The son, who is an internist, felt that his father’s situation was not right and that there must be something wrong, so he took him to the hospital for an eye examination. After the relevant examination, Liu was diagnosed with senile cataract. What is this all about? First of all, let’s look at what presbyopia is. The eyes of a young person can see both distant and near targets, which is called accommodation. As we age, the ability to adjust gradually decreases, so that seeing far away is still clear, but seeing near becomes blurred, which is called presbyopia, medically called presbyopia. Under normal circumstances, older people are presbyopic. Presbyopia makes it difficult for us to do some activities that are close to our eyes, such as reading, writing, sewing, operating a computer, using a cell phone, etc. In recent years, with the popularity of the Internet, people have become more aware of the importance of presbyopia. In recent years, with the popularity of the Internet, people are using computers and cell phones more and more, especially in the past two years, WeChat has become an essential communication and social tool in our daily life and work, and many elderly people have also joined the WeChat army. Therefore, presbyopia does bring inconvenience to modern people’s life. In most cases, a sudden change in the elderly’s ability to see close is a sign that cataracts are occurring. When a cataract occurs, the lens hardens and its density increases, thus increasing the ability of the lens to focus light, and the light entering the eye is focused earlier, presenting myopia. Liu’s eyes are the early manifestation of senile cataract. As the clouding of the lens worsens, blurred vision and glare will appear afterwards, and vision will gradually deteriorate and become unclear when looking close. Therefore, it is important to go to an ophthalmology hospital for an examination when you are suffering from senile cataract.