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We begin by using a pupilometer to measure the placement of your eyes. |
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There are many different versions of pupilometers in the optical industry.
Below is a picture of an Essilor pupilometer. |
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The pupilometer does not fit like an eyeglass frame and sits on the bridge of your nose.
We use the pupilometer to obtain a pupilary distance as a reference point. |
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While the pupilometer is definitely not an accurate way of measuring a person’s monocular
pupilary distance, it is definitely a good machines and can be very useful. A pupilometer
can be relied upon for most single vision orders. |
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However, when it comes to fitting progressive and invisible lenses, the margin of error in
monocular pupilary distance is much less and one must go to the second step of doing the
fitting crosses on the lenses to ensure the accuracy of the placement of the eyeglass lenses. |
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The placement of the eyeglass lenses is so important to tap into the optics of these beautiful
eyeglass lenses. If you are in a dispensary that does not have a pupilometer, one can always
start by using a PD ruler and then switch over to the fitting cross method. |
Return to Step 3 Index Page. |
