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Thread: CR39 aspherics or 1.74 high index aspherics?

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    CR39 aspherics or 1.74 high index aspherics?

    Hello, quick question please,

    So for Low Vision Aids it's better to have CR39 due to it's high V value and therefore wider of field, correct?

    However if somebody has chosen to get SV reading glasses with quite a high add (same +5), would it be better cosmetically to go for 1.74 high index aspheric lenses or stick to CR39 for the better optics?

    Thank you!

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    Forever Liz's Dad Steve Machol's Avatar
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    As per the forum rules you agreed to when you registered:


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    All the professional Opticians on this site would love to help you solve your problems or answer your questions about your eye care and eye wear need! But vision and visual solutions can have thousands of correct as well as incorrect answers.


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