According to a recent study, people who spend more than 2 hours a day on digital devices are 2.5 times more likely to develop dry eye. This statistic is driving the increased incidence of dry eye since the average American spends over 6 hours a day on digital devices.
Dry eye is a common condition that affects millions of people worldwide. It occurs when the eyes do not produce enough tears or when the tears evaporate too quickly. This can cause discomfort, redness, and even vision problems. One of the most significant contributors to dry eye is prolonged screen time. With the increasing use of digital devices, more people are experiencing dry eye symptoms than ever before. In this article, we will discuss the impact of screen time on dry eye and tips for prevention.
Prolonged use of cellphones, tablets, computers, and TV’s can lead to increased discomfort and dry eye due to the following reasons:
Prolonged use of digital devices can cause the eyes to blink less frequently, leading to a decrease in tear production.
When we use digital devices we tend to blink less fully, which then leads to our eyes not getting the required amount of tears lubricating the surface of our eyes.
There is no scientific consensus on the long term impact of blue light on our eyes and dry eye. What we do know is that screens increase our exposure to High Energy blue light. In the visible spectrum, short-wave blue light with wavelength between 415 nm and 455 nm has been cited in studies as being closely related to eye light damage. This high energy blue light passes through the cornea and lens to the retina which may exacerbate symptoms of dry eye and inflammation. Due to the relative small amount of blue light exposure in digital devices it is hard to show a direct impact on eye health in the short term, however caution may be warranted as we currently lack long term studies on the impact of exposure.
Staring at a screen for extended periods can lead to eye strain, fatigue, and headaches, which can exacerbate dry eye symptoms. Viewing a digital device for extended periods of time places an unusual amount of stress on our visual system, this can cause a variety of symptoms which the American Optometric Association labels as Computer Vision Syndrome or Digital Eye Strain.
Digital eye strain may be caused by a variety of factors including:
These symptoms may be caused by:
Take our dry eye assessment to see if your symptoms indicate that you are suffering from treatable dry eye disease