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  1. Replies
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    Finished eyeglass inspection

    I was wondering how large labs inspect finished eyeglasses. It takes time to do it manually. Are there special equipments that do at least part of the process? Need to do it faster without...
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    1,345

    That oven come with the Ultraoptics MiniII. The...

    That oven come with the Ultraoptics MiniII. The oven and the coater are two separate machines.
    Regularly we use the Ultraopticas MRIII but not for 1.74. It is too hot.
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    1,345

    There is a workaround for the suction problem....

    There is a workaround for the suction problem. Put blue tape on the front curve of the 1.74 lens.
    Then use a second lens ( poly, cr39, etc) that has the concave curve matching the base curve of the...
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    744

    Also you might want to check if it is leveled. If...

    Also you might want to check if it is leveled. If the machine is inclined to one side,that problem happends.
  5. how to calculate the edge thickness of a lens

    I would like to know how to calculate the edge thicknees of every angle of a lens.
    The lens is cut to the shape of a frame a descentered.
    The shape and dimmensions of the frame would be obtained...
  6. Thread: IOT Inmotion

    by MIOPE
    Replies
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    2,311

    I am interested to hear others opinion because I...

    I am interested to hear others opinion because I am evaluating this lens specially as an options for outdoor activities other than driving.

    Has been wearing it for 1 month occasionally and all...
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    948

    Six meter long examine room

    Would it be correct to say that if my examine room is six meter long (20 feet) some patient could be prescribed 0.1600 D too positive?
  8. Thread: IOT Inmotion

    by MIOPE
    Replies
    3
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    2,311

    IOT Inmotion

    Could someone share its experience with this lens?
  9. Replies
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    2,532

    Tallboy I totally agree that you have to know the...

    Tallboy I totally agree that you have to know the lenses and that you have to talk to the patient to find out their needs.
    However, patients do not always indicate all their visual needs in a broad...
  10. Replies
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    2,532

    Visual need for different occupations

    Could someone indicate a book where i can find the visual needs of different professions
    and occupations and the type of lens recommended?
  11. Replies
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    994

    Interesting. What about a bifocal (Flat Top 28)...

    Interesting. What about a bifocal (Flat Top 28) with Slab-off?
    Would it work?
  12. Replies
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    3,351

    This is a real case that happened in one of our...

    This is a real case that happened in one of our stores. I did not attend this patient however I could see all the information collected. The monocular PD was used and the symptoms that the patient...
  13. Replies
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    Redo of progressive. Wrong P.D.

    On the average dispensing room you will find to measure PD a pupilometer and/or a ruler.

    Each one has a preferred method for measuring PD and surely everyone has had a case where their preferred...
  14. Replies
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    5,362

    How to remove Cryzal antislip coat?

    We use alcohol to clean the antislip coat of finished Crysal single vision lenses once they has been edged. But, the antislip coat is not ease to remove and some lenses scratch. Is there a easier way?
  15. I have one question. Hardcoat is treated with UV...

    I have one question. Hardcoat is treated with UV light to harden it. If a lens is exposed heavily to sun light which has UV, would that cause that the hardcoat film will become harder? Less flexible...
  16. I agree with Uilleann. This is most likely a...

    I agree with Uilleann. This is most likely a problem of hard coat crack and it could happend again.
    I would try Cr39 without hart coat if not want to refund his money.
  17. Replies
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    I want to thank to everyone that has post their...

    I want to thank to everyone that has post their opinion. I have learned a lot.
  18. Look like is a case of cracked coating. BPI sell...

    Look like is a case of cracked coating. BPI sell a product that remove AR and if the lens is left more time it will remove coating too.
    This could solve the mystery.
  19. Replies
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    5,060

    I do not think that the first prescription ...

    I do not think that the first prescription
    -6.62 -2.95 × 180
    -7.13 -3.22 × 180
    is compensated twice but can not say that I am 100% sure.

    This is how I see this.
    Most of the time you input the...
  20. Replies
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    5,060

    For prescription -6.62 -2.95 × 180 -7.13 -3.22...

    For prescription
    -6.62 -2.95 × 180
    -7.13 -3.22 × 180
    IOT calculated
    -6.36 -3.09 x 2
    -6.86 -3.37 x 179
    ---------------------------

    For
    OD -6.50 -2.75 x 180
  21. Replies
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    Thanks for you post. The job with prescription...

    Thanks for you post.
    The job with prescription
    -6.62 -2.95 × 180
    -7.13 -3.22 × 180
    Is about to be edged.

    But Just in case and following your advice, I will run another calculation on...
  22. Replies
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    5,060

    Correct. I am a Optometrist. Partialy retired....

    Correct. I am a Optometrist. Partialy retired. But has spend time in the Lab. and dispensing because I believe that the patient did not came for a prescription but for a solution.
    In my country a...
  23. Replies
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    5,060

    The new frame is not too different to the one he...

    The new frame is not too different to the one he is wearing. It has pano=5 panto=9. This time the patient is ordering IOT compensated single vision. This is a freeform with ray tracing technology. He...
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    5,060

    Thanks Lensgrinder. The effective power on this...

    Thanks Lensgrinder.
    The effective power on this calculator seems to be what I need.
    But do not know why sometimes this calculator gives axis 61.18 as result when the input Rx axis is 180.
  25. Replies
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    Correct DRK. I need to duplicate the lenses in a...

    Correct DRK. I need to duplicate the lenses in a frame with different pano and panto.
    Lensmeter of actual lenses.
    OD -6.50 -2.75 x 180
    OI -7.00 -3.00 x 180
    Dv 9mm panto=9 pano=5
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