What is the 20-20-20 eye rule and how it can improve vision

Prolonged screen time has become a part of today’s digital era. Eyes are being glued to screens more than ever, and this is leading to increased eye-related issues. Laptops and smartphones leave the eyes tired, dry and sore, leading to a condition called digital eye strain. But imagine this, in a world dominated by screens, a simple practice that can be done sitting on desks, can reduce the fatigue of eyes and even improve long-term eye health. This is exactly what the 20-20-20 rule promises.

What is the 20-20-20 eye rule

• Take a break from screen every 20 minutes
• Look at something 20 feet away
• For at least 20 seconds

Recommended by optometrists, the 20-20-20 rule is a simple, yet powerful eye care guideline to combat the growing ‘computer vision syndrome’. CVS arises when one’s eyes are focused on close-up screens for long periods of time. Blurred vision, eye strain, dryness and even neck, head or shoulder pain can be symptoms of CVS. Although the 20-20-20 rule may sound like a very simple practice, its benefits aren’t so simple. Over time, this routine can enhance focus and may even help slow the progression of myopia, especially in children.

Breaking the 20-20-20 factor

20-minutes factor
Prolonged near-focus keeps the ciliary muscles inside the eyes continuously contracted. Over time this leads to fatigue and strain in the eyes. A break gives the muscles a chance to relax and reduces tension and discomfort in the eyes.

20-feet factor
Studies show shifting eye focus helps prevent symptoms like blurred vision and headaches. Thus, shifting focus from your screen to a distant object relaxes the eye’s focusing system.

20-second factor
During this small span of time, the eyes recover from constant near-focus. This stimulates blinking, which helps and keeps the eyes moist and comfortable.

How 20-20-20 rule improves vision

The three ‘20-factors’ relieve eye muscle fatigue, support tear film and mixture and may even slow myopia progression and this practice can work as a preventive tool for eye health.

• Reduce eye strain: Brief breaks from focusing close-up to focusing on distant objects relaxes the eye muscles and eases strain.
• Prevents Myopia Progression: Looking at distant objects at regular intervals potentially balances eye focus.
• Improves Visual Comfort: Reduced eye discomfort and promotes focus during long screen hours.

Setting reminders is one of the easiest ways to maintain consistency. One can use their phones, laptops, smartwatches to give a ‘stay-away’ reminder every 20 minutes. Setting reminders makes the habit easier to maintain. Adapting the 20-20-20 rule into daily routines is a practical strategy to keep the eyes healthy and comfortable, even during prolonged screen use.