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See How Blue Light Affects Your Day

What is Blue Light?

Blue light is also known as high energy visible (HEV) light. Aside from sunlight, the most common sources of blue light today come from digital devices such as smart phones, tablets, computers, and TVs. Other sources include fluorescent lamps and LED lights. Blue light’s high energy penetrates into deeper layers of the eye compared to other colours of lower energy.

How Does Blue Light Impact You?

a man playing game

Are you a gamer? Blue light may affect your skills, too.

#1 Eye Strain & Discomfort

Digital eye strain may develop gradually. Increased problems with blurred vision especially when blinking, watering or burning eyes, slow focusing between near and far objects, headache, neck and shoulder pain are symptoms of computer vision syndrome. Research indicates that eye coordination disorders and increase in myopia (nearsightedness) are linked with prolonged digital eyestrain.

#2 Increased risk of Cataracts & AMD

Studies suggest long term exposure to blue light and UV light from a young age may increase the risk of cataracts and age related macular degeneration later in life.

#3 Trouble Sleeping

The natural release of melatonin is suppressed by blue light, thus increasing alertness to the brain and disrupting sleep patterns. Limiting screen time before bed may help those who have problems sleeping.

Electronic Device Advice

Since digital screens are unavoidable for many in the schools and workplace, eye doctors and Canadian pediatricians provide guidelines to parents and children:

  • Limit screen time for children to 2 hours per day and follow the 20/20/20 rule: After 20 minutes of near viewing, look beyond 20 feet away (out a window) for minimum 20 seconds to give the eye’s focusing muscles a break.
  • Infants and toddlers under 2 years of age should have zero screen time.
  • Avoid “text neck”. Children unknowingly bring the screen too close when concentrating.
  • No digital devices in the bedrooms, to avoid affecting sleep patterns.
  • Visit your optometrist to determine if glasses with blue blocker filters are needed to ease digital eyestrain.
  • Develop ground rules for your family to keep digital device use at safe levels.

Dr. Dianna Leong, Optometrist

Thank you for trusting your eyecare with us over the years.  The Foresight Eyecare team follows the government mandate to reduce the spread of the COVID-19 pandemic.  After December 2020 announcements made by the Alberta Government, our clinic is following the revised Infection Prevention and Control policy by the Alberta College of Optometrists.

Patients interested in obtaining eye exam services or eye care products can be seen by appointment only.  Please call ahead, and staff will arrange an appointment time and ask COVID-19 screening questions.  If you have any symptoms of cough, fever, runny nose or shortness of breath, we ask that you call or e-mail us and do not attend the clinic for your scheduled visit.   Within the clinic, please wear a mask and use the hand sanitizer at reception.  Our clinic complies with the City of Calgary bylaw requiring mask covering over the age of two years old.  For patients who are unable to wear a face covering due to medical reasons, the patient can be scheduled for an appointment at a time when minimal number of other patients are in the clinic such as at the beginning or end of the day to ensure appropriate physical distancing requirements.

We are using disposable disinfectant wipes on all surfaces and devices such as front desk counters, chairs, handles in exam rooms and waiting room.  All eyewear that have been touched by patients are continually being sanitized.   Any toys and magazines are stored at this time.  Examination areas are being sanitized with hospital grade disinfectant.  Debit and credit cards but NO CASH payments will be accepted.

COVID-19 symptoms are not always obvious.  We want to fend off this pandemic and minimize risk to our patients and the Foresight staff as front line health workers.   Contact that is closer than 2 m (6 feet) is to be avoided, with barriers in place when this cannot be avoided. We choose to continue to do our work and cautiously take care of our patients with compassion, humility, gentleness, and patience.   It is a challenging and new experience for many of us, so let‘s support each other and prevent virus spread!  Beyond 2020, our focus is on take care of you and keeping Clean Hands, Clear Heads and Open Hearts.   For more information, please refer to the following web pages or phone Health Link 811.

Drs. Dianna Leong, Anh Bui, Andrew Chan


Please note our upcoming holiday schedule:

Starting tomorrow December 22nd will be closed through December 26th. Additionally, we will be closing early on New Year’s eve at 3:00 pm and we will reopen Saturday, January 2nd.

We wish you Happy Holidays and a Happy New Year.