Blog

Do blue light filters prevent digital eyestrain?
8th June 2021

Digital eyestrain is a collective term for symptoms associated with using a digital device, for example, headaches, sore eyes, blurred vision and neck/shoulder pain (1). Blue light and digital eyestrain Many types of digital devices use light emitting diodes (LED), with short wavelength (blue light) LED components, to light the display. Exposure to blue light […]

Does using the “Night” mode on your smartphone improve sleep quality?
1st May 2021

Night mode is a feature on many digital devices, and is designed to reduce the amount of blue light emitted from the device. It is based on the premise that exposure to blue light suppresses melatonin production in the brain, and hence, disrupts sleep and our sleep-wake cycle. The logic is: if Night mode is […]

Is it valid to use a mobile app to test a worker’s colour vision?
25th January 2021

A quick check of the App Store reveals more than 50 applications (apps) that can be downloaded to a smartphone for testing colour vision. Many of these apps display images similar in concept to the Ishihara Test and could be used by an individual to check if they (or a family member) have a colour […]

Guest blogs for WORK journal
30th July 2020

Do you know that I am a guest blogger for the journal WORK? Here is a link to my blog page Vision@WORK+play Topics include vision and computers, visual ergonomics, eye protection, eye safety, good vision at work.

Top Tips for Purchasing a Task Lamp
9th June 2020

A task lamp is an excellent way to provide extra light on your work, whether you are reading a book or engaged in an intricate hobby. But shopping for a task lamp can be confusing. It can also be expensive—especially if you buy one that is not right for you, and then you don’t use […]

What is the best height to adjust your computer monitor?
28th May 2020

The rule of thumb for setting up your computer monitor is to set the top of the monitor at or below eye height. At this height, your eyes are looking slightly downwards to read from the display. It has been shown that a gaze angle of at least 15 degrees below horizontal eye height is […]