1 / 11Continuous use of smartphones has bad effects on the eyes. People spend hours on mobile despite knowing this. From playing games to watching movies, users indulge in every hobby on their smartphones, but they take a toll on their health.2 / 11Most of the users do not know how much distance should be between the eyes and the mobile phone and it should not have a bad effect. The number of smartphone users in the world is in the billions and is constantly increasing.3 / 11Many reports state that the average person spends three and a half hours on their smartphone every day. In such a condition, it is natural that it will have a bad effect on the eyes.4 / 11With the increasing use of smartphones, the need to protect the eyes from the damage it causes is now more than ever. That is why it is very important to know the distance between the eye and the smartphone.5 / 11Staring at your smartphone for too long can cause many problems like fatigue, itchy and dry eyes, blurred vision and headaches. Eye problems caused by smartphone use can cause long-term problems.6 / 11The blue light emitted by smartphones can be dangerous for the eyes and retina as it is not blocked by the cornea and lens, thus it is very harmful.7 / 11Most users hold their smartphone about 8 inches away from their face when using it. Do not do this at all, as keeping the phone so close can cause serious damage to the eyes. Keep your eyes about 16 to 18 inches apart to protect your eyes from prolonged smartphone use.8 / 11If you are constantly using your smartphone, don't forget to open your eyes once in a while while looking at it. This will keep the moisture in the eye. Blinking about 10 times in 15 minutes is considered appropriate.9 / 11Be sure to follow 20-20-20. According to this rule, every 20 minutes, for 20 seconds, look at an object 20 feet away from your screen. This relaxes the eyes.10 / 11Keep adjusting the brightness of the mobile and make sure that the brightness of your screen is the same as where you are. A screen that is too bright or too dark can have a negative effect on your eyes.11 / 11Many people use smartphones often in dark rooms without light, but this can be very harmful to your eyes. The best way to avoid this is to keep the brightness level of the mobile as low as possible.