According to research by eMarketer, published in September 2015, UK adults are averaging more than eight hours per day on digital devices. We are continuing to hear more about the increase in reports of eye strain and visual fatigue related to digital devices. It is part of a wave of concern about the impact of blue light on vision, which is starting to become more widely recognised in the UK.
Research by Bradford-based Optegra Eye Hospital Yorkshire [Title and publication date to come] found nearly half (45%) of optometrists and opticians say they have seen an increase in technology-related eye problems in the past five years.
In addition, a VSP survey in the US [Title and publication date to come] shows that teenagers have spent one-third of their entire life looking at digital devices. This is a phenomenon that is not just limited to teens; it also has a great effect on the workforce.
What is blue light?
Blue light is a high-energy light emitted from computer screens, televisions, tablets, smartphones, and even some light-emitting diodes (LEDs) and compact fluorescent lights (CFLs), which is why electronics tend to glow with a blue-ish hue in a dark room. Blue light causes eye strain and visual fatigue because it passes through the lens of the eye and defocuses in front of the retina, an effect we perceive as a glare.
Eyes are constantly working overtime to focus and process blue light, which creates eye strain. Blue light has been shown to disrupt the natural production of melatonin, a hormone produced in the evening that tells our bodies when it is time to sleep. Researchers also continue to investigate the potential long-term, cumulative effects of blue light exposure, including possible vision loss.
Many people in the UK spend the majority of their time in front of a screen (VDU) when they are at work, which makes blue light a concern for employers, as well. Regular eye tests can help with these issues and steps can be taken to counteract it, such as eyewear with lenses that help to reduce blue light exposure.
What can employers do?
In addition to the potential productivity issues related to blue light, employers also must meet the legislative guidelines related to eye safety and computer use. Employers are required to protect their staff against harmful eye exposure. This requirement can be met by providing employees with coverage for eye tests and, when needed, computer glasses. As we continue to learn more about blue light, the benefits associated with comprehensive eye care continue to increase. In fact, the UAB School of Optometry found that employees with healthy eyes and proper vision correction are 20% more productive than those who do not have healthy eyes and proper vision.
The good thing for employers is that a comprehensive vision benefit provides multiple layers of benefits in support of their overall health and productivity initiatives. In addition to meeting the VDU requirement, a vision benefit will also help ensure employees see well, address symptoms related to digital eye strain, and check eye health. All these things will help a workforce stay productive and healthy.
As we learn more about impacts related to blue light, it is important not to lose sight of the simple solution. VSP’s research in the UK [Title and publication date to come] has found that 39% of UK adults are not getting regular eye tests. That becomes even more critical the more we are exposed to blue light emitted from the devices we depend on every day. A comprehensive specialized eye care benefit that promotes engagement in eye health and utilisation of the benefit is valuable to both employees and employers.
Jeremy Chadwick is managing director Europe, the Middle East and Africa at VSP Vision Care
