Pro to Pro

Bumping up the add. We have all heard of it, and some of us have bumped the add power in a progressive lens, using a variety of reasons to rationalize our decision. Of course, as an optician, we only did this with the approval of the prescribing eye doctor. The reading zone of the progressive lens is essential to the PAL wearer, so more add power is better right? After all, at the near reference point (NRP), only approximately 85 percent of the add power is present. What harm can there be in upping the add power? In fact, overcorrecting the near power compromises the progressive lens performance. One effect is less useable intermediate vision. Read More: https://www.2020mag.com//iot-freeform-insights-part-3-bump

In IOT Free-Form Technology Insights Part 1 (20/20 May 2020 issue), we learned about oblique lens aberrations from the optical engineers and scientists at IOT, including how these optical errors influence lens performance, and how the IOT free-form lens design software algorithms compensate these oblique aberrations point by point on the lens back surface, for both SV and PAL designs. In Part 2, we will learn about objective measures and subjective measures used by IOT in analyzing lens design performance. https://www.2020mag.com//iot-freeform-technology-insights-

Registration for our #VMSUMMIT 2020 is now open! This year, the Summit is a four-part virtual series in September and October. #VMAFTERSHOCKS will examine how the pandemic is reshaping business, culture, consumer attitudes and healthcare . Register: http://ow.ly/gZ9550Bfe8p

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