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  1. Prentice Prismatic Power AppPhone Java

    I've developed this App for java phones for a while ago. It was available in my web page but in portuguese language.

    Finally, I had the time to translated it.

    This is a kind of demo for the...
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    Height

    Genesis as a fixed and long corridor. But FD as two diferent corridor lenght. Could it be that you have fitted the short one on FD?

    Cause if so, Your patient will be comparing two distincte...
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    More information

    I also have prescribed and dispensed a few of Id lifestyle. But without any problems.

    Can you tell me what were the prescriptions that this client was using and is using now?
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    Another point of view

    I was reading your initial post on this thread and a question pop into my mind: Which side is your "good eye"?


    There are three things you should keep separated: stress, chromatic dispersion and...
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    6 BI OD and 6BI OS will do, and also make it...

    6 BI OD and 6BI OS will do, and also make it easier for manufacturing and mounting. Unless other prescription specifications exists.
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    OptoMatrix

    This software is my first try to build a ray-tracing software for ophtalmic optics.

    It is open-source and is open to the collaboration of anyone.

    At the present moment, the software allows the...
  7. New software version

    This new version is based on prentice rules equations deducted from the power matrix for a thin lens multiply by the decentration matrix.

    It assumes flat front curve perpendicular to the incident...
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    Gotta be kinding me! :-O Undoubtely one of the...

    Gotta be kinding me! :-O Undoubtely one of the best I ever seen. Congratulations. I are worth of it.
  9. Question?

    Someone pointed to me, that a -3,00x150 with a 10 mm downards (270 degrees) decentration and a 6 D front curve in the equations you send me, results in a Px +2,25, Py -2,60.

    Px is correct but Py...
  10. New version od power distribution software

    Minor correction, when graphing lens power with zero spherical power.

    Enjoy.

    Alberto
  11. next

    next
  12. mschrt20.ocx

    In some cases, the program may ask for a specific file called mschrt20.ocx.

    This is a microsoft control that draws graphic chart and it is used by my program.

    Download it and copy/paste to...
  13. New software version

    Finally, the new version is ready.

    Many thanks to Harry Chilling for the equations.

    There are some small improvements on the different decentration input.

    Try it.

    Alberto Correia
  14. Hello. I finally had time to do some work with...

    Hello.

    I finally had time to do some work with your equations.

    "A" is the difference between the cylinder axis and the decentration axis?
  15. Gotta it. Thanks.

    Gotta it.

    Thanks.
  16. Dfront stands for vertex distance (Dvertex) or...

    Dfront stands for vertex distance (Dvertex) or lens front vertex power?

    Raul Alberto de Sousa
  17. It was written in VB6. Thanks for the...

    It was written in VB6.

    Thanks for the equations. I'll exchange for these ones and post a new version here.


    Raul Alberto de Correia Sousa
  18. Yes. I are right in deed. I'll sort it out and...

    Yes. I are right in deed. I'll sort it out and bring it back soon. It's an overflow error produce by a division by zero.

    It is also true that this short version of the Prentice rule, produces...
  19. This particulary software supports both...

    This particulary software supports both portuguese and english. Just run it and choose the language on the combo box in the window right side.

    If your meant the entire site, there is a easy way to...
  20. Thanks. It will be very usefull.

    Thanks. It will be very usefull.
  21. Power distribution across a toric lens and prentice rule

    I've made this software for an article I've publish on an optics portuguese publication.

    Its purpose is to display the power distribution across the diferent axis of a lens and the prismatic power...
  22. Works great. Now RxCompensator as made...

    Works great. Now RxCompensator as made International. "Another nail towards perfection". Many thanks.
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