Blaby: 0116 277 7733 Glenfield: 0116 287 1025 Lutterworth: 01455 556 053


Coloured overlays and tinted spectacle lenses have been proven to help people suffering with Visual Stress, Dyslexia, Photosensitive Migraines and other conditions. Edmonds & Slatter opticians have a number of staff who are trained in Overlay and Full Colorimetry Assessment using specialist overlay screening kits and our Intuitive Colorimeter. The recommended Colorimetry assessment protocol is a 3 step process:

Cerium1 – Full Eye Examination
It is essential that every person who struggles to read or suffers from symptoms of Visual Stress, first undergoes a full eye sight test. This is important to rule out any eye problems that may be causing or contributing towards the symptoms. This may be covered by the NHS if you are entitled.


Overlay2 – Overlay Assessment Appointment
After confirming during the eye examination that any ocular problems are not the cause of the symptoms, an overlay assessment can be carried out by a member of our fully trained Colorimetry team. The Optometrist may suggest using an overlay for a few weeks, noting any improvements in reading speed and accuracy.


Colourimerty3 – Colorimetry Assessment Appointment*
After successfully using a coloured overlay for a set amount of time, a final assessment can be completed using a specialised machine called an Intuitive Colorimeter. A precision tint, specific to your needs will be determined for bespoke spectacle lenses. This tint may be different to the overlay.

*Please note this appointment can only be completed at our Blaby practice.
If you have any further questions or would like to book an appointment, please call any of our practices where we will be more than happy to help you.

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