To assess a patient for either colour deficiency or ASD™, the ChromaGen™ Diagnostic System is required. It comprises a full range of diagnostic filters and a 25 contact lens trial set in the same colours as the filters.

This offers a choice of density of colour and of tint diameter (5mm, 6mm & 7mm) to ensure optimum performance from the chosen hue.

Patients selecting ChromaGen™ Haploscopic Filters have an option of either individually prescribed contact lenses or filters. In contact lens format the lenses are made from Benz G-5X, 55% Hioxifilicon 4A, a very high quality bio-compatible material that offers greater comfort and wearing times than other materials. The lenses are available in 14.50 mm diameter, standard 8.60 mm radius (8.30mm/8.90mm non-standard).