Precision Tinted Lenses
Precision tinted lenses are the optimal solution to help individuals who suffer from Visual Stress. With over 100,000 possible colour combinations, the Intuitive Colorimeter is the best way to identify the optimal filter tint to address visual stress symptoms.
Using this device, the three parameters of colour – hue, saturation and brightness – are adjusted independently to determine very precisely, our clients’ unique and optimal colour for precision tinted lenses. There are over 10,000 possible colour combinations.
Trial lenses are assembled during the appointment to allow clients to try the selected filter combination under different conditions. Tolerance for a UV filter is also tested. If tolerated, it is added to the lenses.
The tint blend formula is sent to Cerium’s specially designed laboratory in the UK and a pair of CR39 lenses is dyed to exact specifications using special ophthalmic tints.
These dyes have been developed to ensure a filter with a smooth spectral transmission curve. This facilitates the transition from one light source to another and provides filtering for the correct light wavelengths.
These precision medical tints and are not to be confused with fashion tints that are made to look a certain way and are not designed to perform a specific task of filtering wavelengths of light.
While both coloured overlays and coloured lenses can improve reading fluency, their optimal chromaticities differ. As such, the overlay colour cannot be used to select the lens colour.
If you find that the benefit changes over time, you may need to get a tint update. With brain changes and healing may come the need for different accommodation, perhaps the removal of the grey tint or a reduction in the saturation of the colour. Please contact us for further advice.