ODReference

Find contact lens parameters from different manufacturers, convert spectacle prescriptions into contact lenses, and access radius and vertex conversion charts.

Easily find information for common ophthalmic medications. Discover ocular therapeutics by class and see details including brands, generics, dosing, and more.

This section covers key areas and normative values in the practice of optometry including expected values, visual errors, pathology, grading, cap colors, and dry eye testing.