Search

CPD and Education library

Study and gain CPD points through OT’s online CPD exams, and access archived CPD and CET articles, Practice team resources and Skills guides in our Education library

Find out more

Science and vision

News and features about the latest scientific developments and advances in optometry, ophthalmology and eye medicine

Find out more

Professional support

News and features about the latest developments relating to professional support from across optics. This includes updates from optical organisations such as the AOP and the GOC

Find out more

In practice

News and in-depth features about business management and career development in optics

Find out more

Jobs

Explore the latest UK and global jobs in the optical sector for optometrists, dispensing opticians and more

Find out more

Perception of LED lighting affected by age

A person’s age may influence how they view low-energy lighting and displays

light bulb
New research has highlighted that the amount of short-wavelength light a source emits combined with the viewer’s age may affect how it is perceived.

The study, which was published in Optics Express, presented participants with several nearly white light-emitting diodes (LEDs) with different emission spectra.

They were then asked to rank the perceived tints of the light according to a reference white light.

Research team leader, Dr Aurelien David, from LED start up Soraa, highlighted that there were large variations in how different viewers perceived the lights.

“Some thought a given source appeared very pink whereas others thought the same source appeared very green,” he said.

Analysis revealed that the differences were predominantly influenced by a study participant’s age.

Dr David explained that the perceived tint of the LED lights was affected by a viewer’s sensitivity in the violet range, which is strongly age dependent.

He added that modern colorimetry could be used in the design of LEDs to reduce discrepancies in viewer experience.

Image credit: Pixabay/Fotorech