Question to the Department for Transport:

To ask the Secretary of State for Transport, whether he has made an assessment of the potential impact of the brightness of modern LED vehicle headlights on people who have vision difficulties including incipient cataracts.

No specific assessment has been carried out of the potential impact of the brightness of LED headlights on people with vision difficulties including incipient cataracts. However, 2018 research into emerging risks concluded overall that there is no direct adverse health effects from LED emission in normal use. Furthermore, LED headlights are subject to the same detailed requirements as other lighting technologies which include, limits on light intensity to control brightness and regulated beam patterns to minimise the occurrence of glare.