Using the base curve to magnify?

Discussion in 'Optometry Archives' started by douglas, Aug 19, 2009.

  1. douglas

    douglas Guest

    Can you use the base curve of a lens to magnify? I have vision in my
    right eye correctable to 20/40, but I have to do a lot of close up
    work; I don't want to look like a Borg drone w/ a 2x clip-on
    telescope. My prescription in that eye is -11.25 -2.50x178; what base
    curve do I need if I want 2x magnification?
    douglas, Aug 19, 2009
    1. Advertisements

  2. douglas

    Dr Judy Guest

    You can't use a base curve to magnify. You can use a near work
    prescription and holding things closer however. For example, if you
    add +3.00 to your prescription and hold things at 33cm, you will get
    some magnification effect.

    Best to work with your eye doctor to determine what modification to
    make. Measure the distance to the near work and take a sample of the
    work to your appointment.

    Dr Judy, Aug 20, 2009
    1. Advertisements

  3. douglas

    douglas Guest

    Yeah, I'm getting fitted for a contact lens when I see my
    ophthalmologist and optometrist at the end of the month.
    How do you know I have amblyopia?
    douglas, Aug 20, 2009
  4. douglas

    douglas Guest

    So I have to ask my optometrist to fit me w/ a 2x telescope?

    Do I have "low vision" in my right eye?
    douglas, Aug 20, 2009
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.