Hi,
Which diopters should be manufactured to swimming glasses if the prescription is +5,00 dpt ?
I think that +4.25 dpt, but i'm not sure..
Thanks
Peter
Hi,
Which diopters should be manufactured to swimming glasses if the prescription is +5,00 dpt ?
I think that +4.25 dpt, but i'm not sure..
Thanks
Peter
Last edited by essegn; 06-01-2010 at 10:47 AM.
I assume you're talking about vertex compensation. The numbers you quote suggest a diving mask (further from face, increase of vertex), not a swimming goggle (usually close-fitting, reduction of vertex). If so, use the usual formula:
De= Dl/1+dDl.
If the patient is the least presbyopic, do you want a distance Rx? These masks are often used where visibility is limited to intermediate distances. Maybe an intermediate Rx is better.
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