YY 0719.5-2009 Translated English of Chinese Standard. YY0719.5-2009: Ophthalmic optics - Contact lens care products - Part 5: Determination of physical compatibility of contact lens care products with contact lenses
This part of YY 0719 gives the general steps and performance requirements for determination of physical compatibility of contact lens care products with contact lenses, determining whether the observed lens changes are reversible.
Choice of test lens
applicable Back vertex power change of contact changes in contact characteristic change class whose UVA compatibility of contact complies contact lens care contact lens characteristics contact lens class Contact lens materials contact lens parameters control group Cosmetic contact cycle operation cyclic operation Determination of physical Determine the change Determine the characteristic distinguish reversible evaluate finished product provided finished product's technical Give characteristic parameters hydrogel lenses indicators and tolerances indicators of finished initial characteristic irreversible changes least 10 lenses least 15 minutes lens A contact lens care products measured Note Ophthalmic optics parameters are stable product as provided product manufacturer product's technical indicators products with contact recommended references reversible and irreversible solution to equilibrate specified in GB spectral radiant flux Spectral transmittance standard salt solution technical indicators provided Terms and definitions test group Test method tolerances as specified Total diameter type of contact UVB transmittance Vocabulary Yes Physical compatibility