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Intuitive Colorimetry

Intuitive Colorimetry

Background

The Intuitive Colorimeter enables an ophthalmic tint to be chosen according to a patient's subjective assessment of its effects on perception and visual comfort. A precise tint can be selected rapidly and efficiently. Precision Tints can reduce visual stress and perceptual distortion (Wilkins et al., 1994).

Intuitive Colorimetry Mk. 3    for more details see website - www.ceriumoptical.com

The Intuitive Colorimeter Mk. 3 is a new apparatus for mixing coloured light. Colours exist in three subjective dimensions: hue (colour) saturation (depth or strength of colour) and brightness. Many shades can be produced by mixing primary colours in various amounts, but it can be difficult and time consuming to mix lights to match a particular shade. The Intuitive Colorimeter overcomes thes problems.

Examination Procedure

There are many potential causes of visual discomfort and perceptual distortions, and tinted lenses will not help everyone with these symptoms. Before using the Colorimeter, patients should undergo a full optometric examination. In particular, the optometrist should look for any binocular vision or accommodative problems. If any clinically significant anomalies are detected, they should be treated before considering tinted lenses.

Evaluation of Precision Tinting

The Medical Research Council is evaluating the effectiveness of precision tinting. Patients should be encouraged to send their comments to Colorimeter Reports, Visual Perception Unit, University of Essex, Colchester, CO4 3SQ 

For further information contact:  www.essex.ac.uk/psychology/overlays

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