If you have spent any time scrolling through social media or shopping for glasses lately, you have probably heard about blue light. It seems like everyone is talking about it. As your local Kelowna optometrist, I want to help you cut through the noise and understand what blue light actually means for your eyes.

Blue light is part of the visible light spectrum with a shorter wavelength and higher energy. The sun is actually the biggest source of blue light exposure we encounter every day. Your phone and computer screens emit blue light too, but in much smaller amounts.

What we know from research is that blue light plays an important role in regulating your sleep-wake cycle. When you are looking at bright screens late into the evening, that blue light can signal to your brain that it is still daytime, making it harder to fall asleep. If you have ever noticed you feel wide awake after an hour on your phone before bed, this is likely why.

Here is what I see in my office: people come in complaining about tired, strained eyes and assume it is all about blue light. But usually, what is really going on is digital eye strain. When we stare at screens, we blink less frequently – sometimes up to 60% less. This means your eyes are not getting the lubrication they need, leading to that dry, gritty feeling. Add in poor posture and hours of sustained focus, and your eyes are bound to feel fatigued.

The solution is often about developing better screen habits. We recommend the 20-20-20 rule: every 20 minutes, look at something 20 feet away for at least 20 seconds. Better yet, take a stroll around the office to stretch your body. It gives your eye muscles a break and encourages you to blink. Adjust your screen brightness, take regular breaks, and make sure your workspace is set up ergonomically.

Here is the practical advice: blue light blocking lenses may help if you are struggling with sleep or want extra comfort during long screen sessions. Many patients report feeling less fatigued when wearing them. However, they are not a complete solution for digital eye strain, and they are not essential for protecting your eyes from damage.

If you work late into the evening or struggle to fall asleep after using your phone, these lenses might be helpful. But if your main concern is eye strain during the day, we should probably look at other factors first – like your prescription, your workspace setup, and your screen habits.

At the end of the day, protecting your vision is about comprehensive care. Regular eye exams help us catch issues early, whether it is changes in your prescription or early signs of eye disease. If your eyes are bothering you, it is worth exploring what might be causing the discomfort. Come see us and we can figure out what is really going on and find solutions that actually address the root cause.

The truth about blue light is less dramatic than the marketing might suggest, but that does not mean your concerns are not valid. At Visionology Optometry, we are here to help you navigate all the information and make choices that fit your life. Whether you are curious about blue light blocking lenses, struggling with digital eye strain, or just due for a comprehensive eye exam, we are here for you. Book your appointment using the link at the top of this page or give us a call.

Taking care of your vision, one click at a time,

Dr. Nancy Friessen, OD