Tuesday, April 22, 2014 11:30 AM
The very young can be quite difficult when taking a pupillary distance measurement.
Monday, December 10, 2012 8:16 PM
Are you using a millimeter ruler for PDs and fitting heights; does it define your expertise?
Friday, November 16, 2012 5:54 PM
When fitting multifocals, especially in higher powered Rxs, although you normally place the MRPs or optical centers at unequal decentrations to agree with unequal monocular pd's, you may wish to equalize the decentration of the segs for a better cosmetic result.
Friday, November 16, 2012 4:58 PM
Whether you call them monocular PDs or half PDs, they are a refinement in data gathering that can help you supply better performing eyewear to your patients. Monocular PDs are important.
Monday, September 17, 2012 7:36 PM
Traditionally, before eyewear was delivered to an awaiting client, it underwent an evaluation and correction procedure intended to make sure it complied with a concept called "bench alignment."
Tuesday, July 31, 2012 2:51 PM
There is a new twist on the old subject of measuring seg heights and progressive lens verification. The "twist" is The Pupil Marker, sometimes known as the "white pen."
Sunday, January 1, 2012 10:53 PM
When patients complain that they need to lift their chin to read, it may suggest that the eyes of the optician, dotting pupil center, is consistently too low.
Monday, November 7, 2011 4:04 AM
Learn more about accurate PDs.
Tuesday, November 1, 2011 1:49 AM
Since new lens design trends will require more personal measurements, it places a new demand on the doctor and optician.
Monday, October 31, 2011 7:13 PM
Multifocals and progressives have specified fitting heights.
Monday, October 31, 2011 7:00 PM
A PD is the distance between the visual axes of the two eyes. It can be measured manually with a ruler or automatically using a pupillometer.
Monday, October 31, 2011 6:28 PM
Precise segment and progressive fitting heights, first time, teach patients that you understood their vision needs.
Monday, October 31, 2011 5:16 PM
Use this quick reference to fit modern lenses. If your own techniques are different, consider these changes, they incorporate the fitting of digitally enhanced lenses.
Monday, October 31, 2011 3:59 PM
Eyes are at usually different heights. For centering, this should be taken into account as follows. In progressives, order dissimilar fitting heights.