August 6, 2018

There’s a long-standing myth that wearing safety glasses can harm your vision. Workers are worried if it’s healthy for their eyes to be looking through a “plastic” (aka polycarbonate) lens all day while on the job. It’s a valid concern.

The short answer is no – wearing safety eyewear cannot damage your vision. However, it can be the source of some discomforts such as headaches and eye fatigue, which can then influence safety and compliance.

Chances are, if you’re reading this article, you’ve probably experienced some discomfort while wearing safety eyewear. Eye strain is the result of pain and fatigue of the eyes, often accompanied by a headache. Eye fatigue happens when the muscles become tired from intense use (from straining to focus) – similar to what happens to other muscles in your body when they’re put through rigorous exercise or overuse.

What Are the Signs of Eye Strain and Eye Fatigue?

  • Dry, or watery eyes
  • Soreness of eyes
  • Trouble focusing
  • Blurred vision
  • Light sensitivity
  • Headache “behind the eyes”

It should come as no surprise that eye fatigue and eye strain have everything to do with the quality of your eyewear. If you wear cheap, low-quality safety eyewear for hours at a time on the job, you’ll likely start to experience discomfort. Even though your eyes won’t be permanently damaged because of eye strain, eye strain will influence productivity. Having to stop what you’re doing to take your eyewear off and refocus your eyes or give them a break from your eyewear is considered lost time. In extreme situations, eye strain can cause impaired vision, leading to lower visual awareness of your surroundings – affecting your overall ability to detect safety hazards, which can come with very real consequences.

Reasons Safety Eyewear May Cause Eye Fatigue

  • The wrong fit: A common misconception in safety departments is that they can buy one type of eyewear and expect it to work for and fit every employee. This thinking can lead to issues down the road for workers.
  • The wrong tint: If you’re working in environments where you experience glare, do high precision work, or work indoors and outdoors, different types of tints may be needed. Proper tints help your eyes adjust to the conditions of the environment, lessening the intensity at which your eyes need to focus and refocus. If you’re not using the correct tint on your safety glasses, it could result in eye strain or eye fatigue.
  • Scratched lenses: Scratched lenses can be the result of damage during work, the age of the eyewear, or improper care, cleaning, or storage (raise your hand if you’ve ever tossed your safety glasses on your dashboard!). No matter the reason lenses become scratched, it can affect the quality of vision through the polycarbonate and cause eye strain and fatigue. Make sure that if safety eyewear lenses are scratched, their promptly replaced.
  • Poor optical clarity of lenses: If you’re wearing low-cost eyewear, it’s possible that the quality of the polycarbonate lenses isn’t as good as it could be. If you put on a pair of safety eyewear and the lenses seem cloudy or there seem to be tiny distortions in the lenses, beware. This is a telltale sign of poor optical quality. Lenses with excellent optical quality are free of aberrations and imperfections – they allow to see using as close to natural vision as possible.

How Can You Help Avoid Eye Fatigue?

  • Know your manufacturer: Understand how they source their frame and polycarbonate materials. How often do they clean and check their lens molds while the lenses are being created, if ever? Do they have any optics experience or an understanding of the science behind how eyes work? All these factors can either positively or negatively affect the quality of the frames and polycarbonate.
  • Trial eyewear before implementing it into your safety program: The best way to ensure you’re wearing safety eyewear that won’t negatively affect your vision, productivity, and safety is to trial it. This allows you to test out several different pairs to find the right comfort, fit, style, performance, and optical clarity for your application.

While safety eyewear won’t permanently hurt your vision, it can be the cause of eye fatigue and eye strain if you’re wearing the wrong pair. Low-quality safety eyewear can result in poor optical clarity, one of the biggest factors in eye fatigue. Learn more about what edge-to-edge optical clarity means to HexArmor® and how through 90 years of experience and German engineering we design LTX™ Lens Technology into each pair of safety eyewear we create.