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  1. Replies
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    First, thanks for all information from you . A...

    First, thanks for all information from you . A few questions for you Chris. Where I can buy yours products in Europe? Have you product for grey color, or I must mix several products to get grey...
  2. Replies
    36
    Views
    13,260

    Problem with colored lenses

    Hello,
    My problem started when pair of customers claimed that their grey lenses and G-15 lenses (both were CR-39 n= 1,5, colored lenses with some dioptric power) have red color too. I tried to order...
  3. Replies
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    2,802

    Contrast sensivity test software

    I need contrast sensitivity test. Does anybody know some piece of free software who will do the job? I need this test for testing my patients who have cataract, for my final work in my school.
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    3,504

    No, I am not Borysko.

    No, I am not Borysko.
  5. Replies
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    3,504

    Thanks for your answers but nobody tell me what...

    Thanks for your answers but nobody tell me what regulation you have in your country about this theme! I asked my teacher (who is from Great Britain) and he told me that there (GB) regulation not...
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    Nobody? Common, you can better!

    Nobody? Common, you can better!
  7. Replies
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    3,504

    minimum space for refraction

    I am wondering what is a minimum space for refraction in your country? What kind of regulation you have? In Serbia, from where I am, there yet no such regulation at all. But, now administration want...
  8. Replies
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    29,304

    I am sorry, I forgot to tell that this AR/K is...

    I am sorry, I forgot to tell that this AR/K is made by Huvitz.
    Again, any recommendation, experience... is welcome.

    Thanks in advance
  9. Replies
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    HRK-7000 Wavefront Auto Refractor/Keratometer

    Have any some experience with this AR/K?
    If you have, please share this with us.
    I am looking, maybe, to by this. So, every suggestion is welcome.
  10. Replies
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    9,237

    calculations in optometry-optician practice

    Hello,
    I want for my final exam to make same excel spreadsheet for all necessary basic calculations in optometry-optician practice.
    Idea is to have some useful tool that can be helpful in all...
  11. Replies
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    36,632

    I am sorry. I loose my control:hammer:. Ok,;)...

    I am sorry. I loose my control:hammer:.
    Ok,;) thanks for all!
  12. Replies
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    36,632

    What is relationship between Jaeger’s optotype...

    What is relationship between Jaeger’s optotype and N- optotype for near?
    Size, VA?
  13. Replies
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    36,632

    Thanks for links, but I need formulas...

    Thanks for links, but I need formulas...
  14. Replies
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    36,632

    calculation for optotypes

    Does anyone now how to calculate different size from some optotype, conversions (Snellen to logMAR…) …?
  15. Replies
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    10,766

    I am using OpenOffice.org. It is free, and here...

    I am using OpenOffice.org. It is free, and here is link:
    http://download.openoffice.org/
  16. Replies
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    10,766

    Thanks for all your suggestions, finally, here is...

    Thanks for all your suggestions, finally, here is my homework. Now, if there is some mistake, please, tell me.
  17. Replies
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    10,766

    David, this is my homework. Darryl,...

    David, this is my homework.



    Darryl, thanks. Now I figure, in general.
    But, for me, there is another problem. I must calculate this with graphical/mathematical method, with polar (circle)...
  18. Replies
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    Patient's Rx (eyeglasses) is Right eye: 0,00...

    Patient's Rx (eyeglasses) is
    Right eye: 0,00 Sph = - 3,00 Dcyl ax0
    Contact lens (on right eye):
    0,00 Sph = -3,00 Dcyl ax20
  19. Replies
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    Problem with contact lens correction

    Teacher give us this problem:
    Patient's correction (Rx) is 0,00=-3,00 axis (visus 1,0 (20/20)) from right eye. We put on the patient's right eye contact lens the same power but it was rotate for 20...
  20. Replies
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    Does optician perform eye refraction? In some...

    Does optician perform eye refraction? In some states in Europe and opticians, with additional education, can perform eye refraction.
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    Eye refraction and professions

    Hello,

    Please, can someone tell me which professions can perform eye refraction in USA, and what are their competence in practical work?
    In Serbia (Europ), we just started the process of...
  22. Thread: Sagital plane

    by sevalav
    Replies
    8
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    7,576

    Does anybody know answer for my previous post?

    Does anybody know answer for my previous post?
  23. Thread: Sagital plane

    by sevalav
    Replies
    8
    Views
    7,576

    Maybe is point of confusion because I don't clear...

    Maybe is point of confusion because I don't clear told that for me is not important how this sagittal plan refract a light, where is a focus. As you can see, this is not showed on last picture. I...
  24. Thread: Sagital plane

    by sevalav
    Replies
    8
    Views
    7,576

    I forgot to write: this is a spherical lens .

    I forgot to write: this is a spherical lens .
  25. Thread: Sagital plane

    by sevalav
    Replies
    8
    Views
    7,576

    Lets say that we want looking only sagittal...

    Lets say that we want looking only sagittal plane. On the surface on the lens there is lot of
    sagittals planes, like tangentials planes. Infinitely. But we want to see only one, and in 3D.
    If we...
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