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Computer Vision Syndrome

Extended viewing of screens & devices is tough on our eyes.  Discuss your symptoms with your optometrist to find the best solution for you.


  • Headaches, eye strain or double vision
  • Blurry vision & dry, irritated eyes


  • Prescription glasses can help your eyes function efficiently and comfortably in 2 ways:
    1. Improved clarity
    2. By changing the alignment of your eyes & how hard they must work to focus
  • Blue Blocking Filter - special coating that prevents the high intensity light emitted by screens from entering your eyes. Benefits include:
    • Regulation of sleep cycle (blue light can interfere with melatonin production)
    • Relief of tired eyes & eye strain
    • Protect your eyes from disease (possible association of blue light exposure & development of macular degeneration)

Other Tips:

  • Position your screen at arm’s length and ~20 degrees below eye level
  • Keep room lighting the same brightness as your screen
  • Minimize glare by using glasses with anti-reflective coating and blue blocking filter
  • 20/20 rule: every 20 minutes take a 20 second break to look 20 feet away
  • BLINK often and fully: blink rate drops dramatically with computer use and many patients may only blink partially (don’t close fully), which  can cause significant dryness and irritation.
  • Talk to your doctor about the best treatment for your dry eye.

Be sure to tell your optometrist the set up of your work station  (laptop vs desktop, screen height & distance) and additional details of your work area (lighting, air flow, etc). Book an appointment today to help alleviate your computer strain!

Complete eye exams are a crucial part of preventive eye care. Book now to preserve your vision.

Q&A for Blue Light and Bluetech Lens

Q: What is Blue Light?

  • Blue light refers to the end of the visible spectrum that is characterized by short-wavelength, high-energy light (380-500nm)
  • Sources of blue light include the sun, screens, electronic devices, as well as fluorescent & LED lights

Q: What are the negative effects of Blue Light?

  • The high-energy wavelengths of blue light translates to greater flickering, which results in glare, reduced contrast /clarity, and digital eyestrain, including tired eyes, headaches, and mental fatigue
  • Prolonged blue light exposure may cause retinal damage & contribute to macular degeneration
  • Blue light is thought to suppress melatonin production, resulting in a disruption of the natural circadian rhythm & sleep cycle (can contribute to symptoms of insomnia/ restlessness)
  • Recent research suggests that nighttime blue light exposure and/or working the “night shift” is thought to be associated with higher risk of breast/ prostate cancer, heart disease, obesity and depression

Q: How can we counter the negative effects?

  • Glasses with a blue blocking filter can prevent this harmful type of light from entering the eyes (rather, the light is reflected at the surface of the lens back out into the environment)

Q: What can an OD do to help me in this area?

  • Your optometrist can prescribe you a special type of glasses with a blue blocking filter for use during prolonged screen-time
  • Your optometrist will also discuss other behavioral & environmental modifications that you can use to reduce the symptoms of Computer Vision Syndrome

Q: What is the relationship between Computer Vision Syndrome and Blue Light?

  • Computer Vision Syndrome is a term used to describe the symptoms of strain, headaches, tired eyes, blurred vision, dry eye that patients often describe after extended use of tablets/ digital devices
  • Preventing blue light from entering the eyes has been shown to relieve many of these symptoms and allows patients to work on their devices comfortably for longer periods of time

Q: Bluetech Lenses –

  • What are Bluetech lenses used for and what are their benefits?
  • Bluetech lenses block high-energy blue light from entering your eyes. This allows for:
  • UV ray and high-energy blue light protection
  • Natural depth and colour perception
  • Improves visual acuity & night vision
  • Improves contrast & reduces glare
  • Please describe the technology behind them
  • Bluetech lenses filter high-energy blue & UV light using a specialized ocular lens pigment (derived from the oxidation of 3-Hydroxykynurenine).
  • This pigment is combined with melanin & isolated in a durable material, which is then added to the optical lens, providing protection, contrast and colour enhancement
  • Are there different types of Bluetech lenses and what are they used for?

Indoor lenses:

  • provide protection from sources of harmful high-energy blue light, such as harsh fluorescent lighting, computer screens, and personal electronics, while also giving you soothing vision.

Outdoor Lenses

  • Outdoor lenses allow patients to experience the ultimate visual performance and protection.
  • See everything in high-definition! Experience improved visual acuity, better color perception and reduced glare, with a unique lens technology that is durable and provides the protection you need to prevent the damaging effects of UV rays and high-energy blue light.

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