Key terms

DSE awareness: key terms

Plain-English definitions of the words used in the course. In the lessons, tap any underlined term to read its definition without leaving the page.

8 terms, United Kingdom version

20-20-20 rule
Every 20 minutes, look at something about 20 feet (6 metres) away for 20 seconds, to rest the eyes.
DSE
Screens used for work, such as computers, laptops, tablets and smartphones.
DSE assessment
A check of a person's workstation and work pattern to find and reduce DSE risks.
DSE user
A worker who uses DSE regularly as a significant part of their normal work. In the UK, this usually means daily use for continuous periods of an hour or more.
Footrest
A support for the feet when they do not reach the floor comfortably.
Glare
Bright light shining on or reflecting from a screen, which makes it hard to read and strains the eyes.
RSI
Pain or injury in the muscles, tendons or nerves from repeated movements such as typing.
Workstation
The screen, keyboard, mouse, desk, chair and surrounding space a person uses for DSE work.

These terms come from the United Kingdom version of the course. See what the course covers.