Researchers at Kingston University are calling for people with visual impairments to participate in a new study.
The research project, funded by Moorfields Eye Hospital and University College London, aims to determine the distance at which visually impaired people can see the minimum contrast difference between two surfaces.
The work is due to start immediately and will be completed in nine months time.
The University is looking for people who are able to travel to Moorfields Eye Hospital (near Old Street tube station) in London.
If you are interested in the project, contact Alessio Corso (firstname.lastname@example.org) or Hilary Dalke (email@example.com).