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  1. Thread: ocular rx????

    by Bezza
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    2
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    9,293

    Assuming a BVD of approximately 12mm the values...

    Assuming a BVD of approximately 12mm the values you have given for the ocular refraction are correct. The reason for this is that you have a cross-cyl spectacle Rx of -4.00x90/-9.00x180.
    Using the...
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    27,622

    Anisometropia is defined simply as an unequal...

    Anisometropia is defined simply as an unequal refractive error as opposed to isometropia (equal refractive errors) or antimetropia (opposite refractive errors) which is a case of anisometropia where...
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    27,622

    Where there is only one or two dioptres of...

    Where there is only one or two dioptres of anisometropia it usually does not cause a problem, although some patients will notice that the vision is slightly better in one eye.
    Using a short corridor...
  4. I really fail to see the problem here....

    I really fail to see the problem here. Transposing from plus cyl to minus cyl is so easy that you ought to be able to do it in your head without barely giving it a second thought, (except to double...
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    11,345

    Also it is important to note that with tool power...

    Also it is important to note that with tool power problems compensation for pad thickness is often required. Since the question does not ask for it it most likely isn't required however it may at...
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    9,098

    In our practice it is usual for patients that...

    In our practice it is usual for patients that require dilation to have the drops inserted at the end of the eye exam and then be seen again once the optom has seen his/her next patient (we offer them...
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    I agree.....i haven't had a problem switching...

    I agree.....i haven't had a problem switching either panamic or comfort wearers to the physio, in fact i have had only one non-tol with physio and that was an engineer who previously wore varilux...
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    Hrm not sure about the flat top set low approach,...

    Hrm not sure about the flat top set low approach, but another good solution for golfers is to fit them with a small round seg but with an outset rather than inset and also set a bit low as well...
  9. Replies
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    16,597

    hrm interesting.....i have never heard of this...

    hrm interesting.....i have never heard of this Definity lens nor any of this Ground View Advantage stuff either. Is this a new lens only available in the US or does anyone know if its available in...
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    8,673

    Chanel and Versace are probably our best sellers...

    Chanel and Versace are probably our best sellers in terms of plano sunglasses. Women seem to love designer sunglasses as much as they love shoes and handbags.

    Maui Jims are great sellers too, you...
  11. Replies
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    14,154

    I agree, here in the UK the way an Rx is written...

    I agree, here in the UK the way an Rx is written is governed by british standards and should always be written to 2 decimal places. So if it isn't written correctly the responsibility is with the...
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    7,580

    FBDO BSc(Hons) SMC(tech) :D

    FBDO BSc(Hons) SMC(tech)
    :D
  13. Thread: induced prism

    by Bezza
    Replies
    25
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    14,255

    yeah i just found out a couple weeks back that...

    yeah i just found out a couple weeks back that our ABDO course has been granted degree accreditation. So when i finish it ill have a BSc :)
  14. Thread: induced prism

    by Bezza
    Replies
    25
    Views
    14,255

    Hrm that is not the case here in the UK, I...

    Hrm that is not the case here in the UK, I recommend a fair few slab offs for presbyopic anisometropes. From my experience i have found that although most pxs will get on ok with a flat top with slab...
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    Kind of off topic but just out of interest i...

    Kind of off topic but just out of interest i wonder how many of you have come across the B-segment bifocal, its like a standard flat top but without the curved bottom part.
    I have only ever seen one...
  16. Yeah i discovered that problem too, it did...

    Yeah i discovered that problem too, it did however only happen once, as after the first time of removing peices of a cracked 1.9 lantal i came up with a cunning plan of fixing a 2nd sticky blocking...
  17. If you can provide me with the A and B...

    If you can provide me with the A and B measurements of the frame I can give you a pretty good idea of the thicknesses as I have written my own sag calculations spreadsheet....wont be as exact as...
  18. Thread: Lens or Lense?

    by Bezza
    Replies
    16
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    8,781

    I'm fairly sure that lense is an archaic spelling...

    I'm fairly sure that lense is an archaic spelling dating back to the medieval english of Geoffrey Chaucer and the like as those guys had a bit of a thing for putting an extra e on the end of words....
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    SMC(tech) and currently in 2nd year of ABDO...

    SMC(tech) and currently in 2nd year of ABDO course.....hehehe just thought i'd throw in a random UK qualification amongst this mass of US ones.
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    I wasn't saying that it wasn't possible to start...

    I wasn't saying that it wasn't possible to start a fire with a sphero-cylindrical lens, just that it wouldnt produce a point focus even if tilted especially if there was a high cyl.
    It is however...
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    8,656

    Hrrrmm, unless there was very little cyl power...

    Hrrrmm, unless there was very little cyl power this wouldnt really be possible as sphero-cylindrical lenses do not produce point foci like spherical lenses do. Although it may be possible to...
  22. most surfacing labs are able to calculate centre...

    most surfacing labs are able to calculate centre and edge thickness by simply feeding the data into their surfacing software or into a simple spreadsheet, takes no effort at all really.

    However...
  23. Thread: the test

    by Bezza
    Replies
    26
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    8,730

    hrm interesting topic.....i just wonder how the...

    hrm interesting topic.....i just wonder how the certification compares to what we have over here in the UK, i sat the SMC (tech) exams a few years back and that was nearly all maths, optics and...
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    Algha Works make plenty of gold filled frames in...

    Algha Works make plenty of gold filled frames in all sorts of designs, in fact i think i reglazed one that sounds almost exactly like the one you have described there a couple of weeks back....
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    one word.......Zeiss They are the masters of...

    one word.......Zeiss

    They are the masters of high minus Rx's like that, not sure which designs they can do it in but i guarantee they CAN do it.
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