For sale or trade older model A.O. RX Master Phoroptor (+) cylinder wanting (-) cylinder
[This message has been edited by ginny (edited 12-18-2000).]
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For sale or trade older model A.O. RX Master Phoroptor (+) cylinder wanting (-) cylinder
[This message has been edited by ginny (edited 12-18-2000).]
What's an RX master? (and that is a real question, I'm from england, and I don't think we have those)
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Maria "no amusing quote" K
"Rx Master" is simply American Optical's brand name for their phoropter (you know, the thing the refractionist swings in front of your face then clicks away with all those lenses). B&L's most famous brand of the same gizmo is the "Green's Refrafctor". Phoropters can come in plus cyl or in minus cyl; for some reason MD's prefer the plus cyl, while OD's use the minus cyl. What brands do they use in England?
Larry
We don't have one, we have a man with a trial case! His name is Gerard.
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Maria "no amusing quote" K
Wow. Haven't seen someone use just trial lenses for about 12 - years. Used to work with an M.D. who didn't even own a phoroptor, just used trial lenses (drove some of the younger docs who worked in his practice crazy, as he refused to spend the $$$ for a phoroptor in any of his four exam rooms). He was amazingly fast with them, would have as many as five lenses in each hand. Always thought he should have been a professional presdigitator, but that probably wouldn't have paid nearly as well.
Larry
They used plus cyl. phoropters and trial lenses back when rx lenses were actually ground with the cylinder power on the "front" side of the lens; minus cylinder exam lenses came along when lenses were no longer ground on the front side and became back, ocular surface ;or minus cylinder lenses. as far as i'm concerned I wish all of the docs would throw away their plus cyl units; you really can't expect a plus cyl rx to be fabricated in minus cyl form and have the pt see the same as in the exam; not possible!
All our permanent optoms use trial lenses, and none of the locums have a problem with it. I think it might be more of a British thing. I use trial lenses for the hand neutralising section of my course, which has already been laughed at on the board. :)
Maria 'If you can play cards, you can hold 5 trial lenses' K
Maria, now how do you know you're at 27 degrees on a 0.25 cylinder? you know some pts are so precise!