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Thread: ABO on Sun!

  1. #1
    OptiBoard Apprentice
    Join Date
    Jun 2000
    Plantation, FL


    Just wanted you all to know that I've been reading lots and lots of great things on this Board that (I hope!!) will help me out a great deal this Sun. on the ABO!!

    ANY more ABO pointers would be GREATLY appreciated!!

    One day, I hope to be as proficient as you all are in Optics!! On my way!!

    Thanks again!

  2. #2
    Master OptiBoarder Darryl Meister's Avatar
    Join Date
    May 2000
    Kansas City, Kansas, United States
    Lens Manufacturer


    It's been awhile since I've taken the test... But I would recommend being proficient in at least the following areas:

    * Positions for measuring multifocals (e.g., pupil center for progressives, lower lid for bifocals, etc.)
    * Measuring for distance/near/mono PDs
    * How a prism works (e.g., bends light towards base and image towards apex)
    * Prentice's rule (Prism = Decentration x Power / 10)
    * Splitting prism between two eyes (e.g., 4 BU in OD = 2 BU in OD & 2 BD in OS)
    * Basic lens styles (e.g., single vision, flat-top, executive-style, etc.)
    * Basic frames styles (e.g., plastic/acetate, metal, nylon rimless, 3-pc rimless, etc.)
    * ANSI Z80.1 Standard lens tolerances
    * ANSI Z87.1 Standard safety tolerances
    * FDA impact resistance requirements (e.g., 5/8" drop-ball dropped from 50"; record kept for 3 years)
    * Converting back and forth from metric (e.g., 5 3/4" temple = 145 mm)
    * Common refractive errors and terminology (e.g., myopia, hyperopia, presbyopia, anisometropia, etc.)
    * Common pathological conditions (e.g., cataract, macular degeneration, etc.)
    * Lenses used to correct errors (e.g., plus lens for hyperopia, slab-off for anisometropia, iseikonic lens for aniseikonia)
    * Common lens treatments (e.g., tints, AR coatings, photochromics, etc.)
    * Common frame adjustments (e.g., how to raise the frame using the pad/guard arms, how to bring one side closer to the face)
    * Basic dispensing tools (e.g., lensometer, lens clock, pliers, etc.)
    * Basic base curve theory (i.e., base curves are chosen to minimize peripheral lens aberrations such as oblique astigmatism)
    * Thin lens formula (Power = Front Curve + Back Curve)
    * Vocabulary -- You should at least be comfortable with the terms I've used here

    Hope this helps! It's at least a good start. Good luck to you!

    Best regards,

    [This message has been edited by Darryl Meister (edited 11-17-2000).]

  3. #3
    OptiBoard Apprentice
    Join Date
    Jun 2000
    Plantation, FL


    Fantastic info!!
    Thanks a TON!!!

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