Industrial Physics Product Integrity Limited articles

A contact lens design using a particular material will require the measurement of Oxygen Permeation.  Materials with higher permeation rates together with thinner lenses will perform better, providing greater comfort during use.  However, simply choosing the material with the highest permeation rate and making the lens thin is not an easy option.  The lens shape and thickness varies with the prescription.  A focal length of -3.00 Dioptres has been chosen as the standard fo