This part of ISO 18369 specifies the tolerance limits of the principal optical and physical parameters of rigid, soft and rigid scleral contact lenses.
ISO 18369-2:2012 Referenced Document
ISO 18369-1 Ophthalmic optics — Contact lenses — Part 1: Vocabulary, classification system and recommendations for labelling specifications*, 2017-08-23 Update
ISO 18369-3:2006 Ophthalmic optics - Contact lenses - Part 3: Measurement methods
ISO 18369-4:2006 Ophthalmic optics - Contact lenses - Part 4: Physicochemical properties of contact lens materials