With many of us spending more time than ever at our computer screens, Alison Macpherson, Programme Leader for the University of the Highlands and Islands’ optometry BSc (Hons), highlights the issue of digital eyestrain and how to avoid it.
When the clocks go back at the start of winter, optometry practitioners often see an increase in patients reporting difficulty with reading small print in the darker nights.
We often forget that the human eye is a finely tuned instrument which works best in natural daylight conditions, so reading outside on a bright summer’s day (with protection from UV rays of course) is a very different visual task to sitting in front of the fire on a cold winter’s evening reading the latest release from a favourite author. Similarly, the use of digital technology as a means of communication can have an impact on our visual system.
The COVID-19 pandemic is continuing to cause challenges to our daily lives. Many of us are still working remotely from our kitchen tables or spare rooms and the format of our working day is considerably different from how it was before lockdown.
Our day to day lives have become dominated by technology. Our working days can consist of virtual meetings requiring long spells in front of a screen and, even away from work, our social interactions are now also facilitated via Zoom, Facetime or other virtual means. This means that large portions of our lives currently centre around display screen equipment.
Using a screen or computer can be visually demanding and may cause symptoms which are not apparent when you carry out other work. Asthenopia (eyestrain) associated with screen use can manifest with a variety of symptoms including eye fatigue, discomfort, blurred vision, pain or generally sore eyes. Visually related symptoms can also be caused by factors such as ergonomics.
How to help these symptoms
- Take regular breaks
- Look away from your screen periodically and allow your eyes to refocus on an object at a different distance. A good technique is to use the 20-20-20 rule by focussing on an object 20 feet away for 20 seconds, every 20 minutes.
- Adjust the settings on your screen including brightness, contrast and font size so it’s easier to see
- Consider the distance you are sitting away from the screen – arm’s length is optimal for most people.
- Regular eye examinations with an optometrist can help to identify any underlying causes that may be contributing to symptoms.
- Optometrist, Nicola McElvanney, from Optometry Scotland, also recommends switching off screens at least half an hour before you go to bed, as this may upset the Circadian rhythms that help to control sleep patterns.
For more information about the University of the Highlands and Islands BSc (Hons) optometry, visit www.uhi.ac.uk/en/courses/bsc-hons-optometry