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All Conlons spectacle lenses are subject to strict quality controls to ensure they comply with both British and European Standards. Conlons use a variety of high quality lenses and are able to accommodate any preferences you may have for a particular brand of lens. As all our practices are accredited Zeiss Lens Specialists we feel we can offer the best value with these world leading top quality lenses.
Virtually everyone opts for some form of plastic lens these days though we can still get optical glass lenses to special order. As well as standard “CR39” 1.5 index optical plastic we also offer “Transitions” light reactive photochromic lenses plus a variety of higher refractive index plastics that are thinner than standard.
For prescriptions over + or -3.00 we recommend thin 1.56 or 1.6 index lenses (15% to 25% thinner), for prescriptions over + or – 4.00 we recommend extra-thin 1.67 or 1.70 index lenses (up to 33% thinner), and for prescriptions over + or – 5.00 we recommend ultra-thin 1.74 index lenses which can reduce thickness by up to 39%.
For rimless glasses we do not recommend standard CR39 as it is not strong enough to withstand the extra pressure – thinner lenses also look much better.
Whatever glasses you choose we recommend a scratch resistant coating and also an anti-reflection coating for improved clarity of vision. |