Moderate browsing of healthy and positive mobile short videos can help elderly people improve their online literacy, broaden their horizons, and relax and unwind. How to avoid addiction during this process? What aspects should be paid attention to when using a mobile phone? Liu Yang, Deputy Chief Physician of Ophthalmology at Zhongnan Hospital of Wuhan University, suggests that elderly people can follow the "20-20-20" principle when using electronic products. That is, after using their eyes for 20 minutes at a close distance, they should rest for 20 seconds and use these 20 seconds to look into a distance of 20 feet (6 meters), allowing their eyes to have a "halftime rest". Try to avoid playing with your phone while lying down or turning off the lights to look at it. Lying down and playing with your phone, especially when lying on your side, can cause your eyes to be compressed by the pillow, resulting in insufficient blood supply to the eyes, which can easily lead to visual fatigue and symptoms such as dry eyes and eye discomfort. When turning off the lights, the light is dim, and in order to see objects clearly, the pupils will dilate, causing an increase in intraocular pressure, which can affect vision and even lead to glaucoma. Elderly people generally have problems such as presbyopia, and poor eye habits over the long term can easily lead to eye diseases. It is not recommended to look at your phone while walking, as this not only poses a safety hazard, but also causes your body to constantly shake while walking. The distance between your phone and your eyes is also constantly changing, and your eyes need to adjust their focus in real time, which can lead to fatigue. In addition to paying attention to health issues, elderly people should also be cautious of some "tricks" and fraudulent activities on short video platforms, and protect their own property. Elderly people have relatively few channels to obtain information, and their ability to distinguish the authenticity of short video content is relatively weak, which can easily give fraudsters an opportunity to take advantage of. "Wu Chunli, the head of the Anti Fraud Center of the Hubei Provincial Public Security Department, reminded that especially short videos related to online courses, health preservation, investment and financial management, may induce users to place orders to purchase goods, or use various" language "and reasons to induce elderly people to recharge, pay, transfer money, etc. When watching short videos, elderly people should pay attention to not clicking on unknown links, not disclosing personal information, verifying transfers and remittances, and promptly reporting suspicious situations for help. (New Society)