Minimum Height For Progressive Lenses, A good rule of thumb is to choose a frame with a minimum vertical lens height of 30mm. E o E o E u a. A progressive corridor is best with a seg height of about 21-22 and if the frame sits like it does on the models, your seg height is probably at least 36mm, and having extra lens space invites extra We recommend a frame height of at least 30 mm to accommodate a progressive lens. The recommendations of the lens manufacturer should be Also, make sure there is at least 10mm of distance vision above the fitting cross in a progressive lens. sual performance of the lens, particularly in the reading area. It ensures that your glasses are properly aligned to provide the best The key to a successful fit for those who are wearing progressive lenses are a proper measurement of the patients’ monocular pupillary distance, proper segment height Adjusting to progressive lenses? Get useful tips and insights on how to make the transition smooth and enjoy clear vision at any distance. How corridor length is related to minimum fitting height (MFH) and why choosing the proper length is more important than you might think in getting the best results and reducing non The first progressive lenses were designed to deliver an addition power, but there was no possibility of individually optimizing a lens for a specific person, so progressive lens Having a better understanding of modern progressive lens design could help save you time and energy by getting it right the first time. With modern day progressive lenses it is advisable to dot the fitting heights ith the patient’s head in a natural forward looking position. Stand to the side and just in front of the patient, then view the line drawn on the lens. Fitting progressive addition lenses (PALs) requires both an art and a science.

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