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Medical Forum / General / Vision / July 2006Pupillary distance
My optician has given me two PD figures: 66 distance and 63 near. I tend to spend more time reading and using a computer than driving and outdoor activities. For single vision lenses, which figure would it be better to use, or should I compromise somewhere in between?  SignatureThe address in the Reply-To is genuine and should not be edited. See <http://www.realh.co.uk/contact.html> for more reliable contact addresses. > My optician has given me two PD figures: 66 distance and 63 near. I tend > to spend more time reading and using a computer than driving and outdoor > activities. For single vision lenses, which figure would it be better to > use, or should I compromise somewhere in between? Are you short sighted (minus prescription) or long sighted (plus prescription)? Dom >> My optician has given me two PD figures: 66 distance and 63 near. I tend >> to spend more time reading and using a computer than driving and outdoor [quoted text clipped - 3 lines] > Are you short sighted (minus prescription) or long sighted (plus > prescription)? R: Sph -6.25 Cyl -0.75 Axis 15 L: Sph -6.50 Cyl -0.50 Axis 42.5 SignatureThe address in the Reply-To is genuine and should not be edited. See <http://www.realh.co.uk/contact.html> for more reliable contact addresses. >>> My optician has given me two PD figures: 66 distance and 63 near. I tend >>> to spend more time reading and using a computer than driving and outdoor [quoted text clipped - 6 lines] >R: Sph -6.25 Cyl -0.75 Axis 15 >L: Sph -6.50 Cyl -0.50 Axis 42.5 Your dispensing optician should determine the monocular interpupillary distance. The numbers should look like- 35/31, 33/33, or 32/34, in other words each eye individually. Very important for complex lens designs (aspherics, atorics, PALs) and for stronger powers. I would usually use the distance IPD for both distance and readers, allowing the principal axis to pass through the center of rotation of the eye. Hope this helps, Robert Martellaro ~~~~~~~~~~~~~~~~~~ Optician/Owner Roberts Optical ~~~~~~~~~~~~~~~~~~ "If a million people believe a foolish thing, it is still a foolish thing." - Anatole France > My optician has given me two PD figures: 66 distance and 63 near. I tend > to spend more time reading and using a computer than driving and outdoor [quoted text clipped - 4 lines] > The address in the Reply-To is genuine and should not be edited. > See <http://www.realh.co.uk/contact.html> for more reliable contact addresses. If the glasses are your distance correction (make distance clear but also used for reading and computer), then you would use the distance pd, if they are reading glasses (you are over forty and these glasses will blur your distance vision) you would use the near. Usually the glasses fitter figures this out for you. Dr Judy >> My optician has given me two PD figures: 66 distance and 63 near. I tend >> to spend more time reading and using a computer than driving and outdoor [quoted text clipped - 6 lines] > will blur your distance vision) you would use the near. Usually the > glasses fitter figures this out for you. I'm short-sighted and not old enough to need bifocals, varifocals or separate reading glasses, so I suppose I should go for the far figure. However, I did notice with my new glasses with the chromatic aberration I could see OK in the distance but it was difficult to focus on text with both eyes at once. SignatureThe address in the Reply-To is genuine and should not be edited. See <http://www.realh.co.uk/contact.html> for more reliable contact addresses. |
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