Colour vision detailed assessment (not to be claimed for screening tests such as Ishihara, HRR and University, etc.) only where underlying pathology is present or suspected. Requires that the following services are rendered: one of the screening tests and at least two (2) of the following detailed tests: 100 Hue, D15, Lathony New Colour Test or anomaloscope test. To be performed where underlying pathology is present or suspect. Not to be performed as a routine screening test.