Unfortunately,  YES. Spending long hours in front of a screen is one of the causes of  dry eyes. Computer screens, smartphones, and TVs can worsen the symptoms  or even cause the occurrence of the condition. 

The  explanation is that screens influence blinking and blinking has a  crucial part in dry eye syndrome.

Blinking keeps the eye hydrated. Each  time we blink, a film of tears is applied to the eye. When we watch a  screen, we don’t blink as we should.

The computer screen affects  blinking in two ways. It affects blinking frequency and how much the eyelids close during a blink.

A  study to determine the relation between CVS (computer vision syndrome)  and dry eyes was conducted on 21 participants. The result showed that  reduced blinking rate and completeness are CVS symptoms that occur when  we watch a screen. Because we blink less, the eye doesn’t get enough  hydration. The screen also affects blinking. This means that the eyelids  are not completely shut when we blink. Reduced frequency and  completeness may cause dry eyes or intensify the symptoms.The normal  blinking frequency is once every five seconds or so. The study found out  that when we sit in front of a screen the frequency decreases to 10  seconds. Incomplete blinks prevent the layer of tears from being applied  to the entire cornea. This is why dry eye symptoms occur when we sit in  front of a screen for too long.

Changing  the way we blink is practically impossible. Reduced computer screen  time may also not be an option for people who use a computer for work.  It’s advised to take a five minute break once every half an hour. Look as far away as possible, preferably through a window, and have a few  mindful blinks during the break. Concentrate on closing the eyes  completely. Although it may not seem like a proper treatment, these  breaks can help with the dry eyes symptoms.