Optical Prism March 2016 | Page 15

They also have been known, however, to be more difficult for the wearer to get used to. And of course, whatever the reason for choosing contacts – vision correction, convenience or cosmetic – none of those three motivations is likely to over-ride an uncomfortable, irritating fit. In answer to that problem, and for many who have been told in the past they were not good candidates for contacts, there is the new “scleral” GP contact. Scleral GP’s are larger in diameter than both the conventional GP or soft lenses, covering more of the whites of the eye. This larger size makes them more secure, as well as more comfortable than the older type GP’s while still retaining all the benefits of the gas permeable material. The scleral GP’s come in three different sizes and, according to the educational branch of the Opticians Association of Canada (OAC), they are particularly helpful for those who have hard to fit eyes, dry eyes or irregular corneas. “Irreg