Most colour deficiencies are hereditary, but some can occur in certain eye diseases or as a side-effect of medication.
As part of our comprehensive eye exam we carry out colour vision screening using an Ishihara Test. This will detect the most usual form of Red/Green deficiency.
We can also carry out a City University Colour test to detect the rarer forms of colour deficiency, e.g. Blue/Yellow.
An example plate from an Ishihara colour test