Why do some people never need glasses, even with all-night scrolling?

From personal experience, I’ve noticed that people who seem to avoid needing glasses after extensive screen time often have what eye specialists refer to as strong ciliary muscles. These muscles control the lens’s shape inside our eyes, allowing us to focus on nearby or distant objects. When these muscles are well-developed, the eyes can adjust effortlessly, preventing the strain that typically leads to nearsightedness (myopia). In contrast, individuals with weaker or less flexible ciliary muscles are more prone to developing myopia, especially with habits like late-night scrolling on phones or prolonged screen exposure. This constant focus at close range makes the eyes work harder, leading to muscle fatigue and elongation of the eyeball, resulting in blurry distance vision. To support ciliary muscle health, I started incorporating eye exercises like focusing on objects at varying distances throughout the day—a practice called the 20-20-20 rule (every 20 minutes, look at something 20 feet away for 20 seconds). This helps relax and strengthen the muscles, reducing eye strain. Nutrition also plays a role; foods rich in omega-3 fatty acids, vitamins A, C, and E, and minerals like zinc can contribute to overall eye health. Hydrating well and ensuring sufficient sleep further support muscle recovery and function. While genetics do influence the strength of your ciliary muscles and susceptibility to vision problems, adopting healthy eye habits can slow down or prevent deterioration caused by excessive screen time. If you find your vision changing, it’s essential to consult an eye care professional to assess your ciliary muscle condition and get appropriate corrective options like glasses or exercises tailored to your needs.