Some elements of our website may not load if you have an ad blocker turned on.

Eyeglass Prescriptions - Forrest Health
    Share This
    Skip to main content

    Eyeglass Prescriptions

    Topic Overview

    Prescriptions for glasses have two main components: shape and power.

    The shape of a lens determines the type of correction.

    • Concave, or minus, spherical lenses are thicker at the sides than in the middle to correct nearsightedness (myopia).
    • Convex, or plus, lenses are thicker in the middle than at the sides to correct farsightedness (hyperopia) or presbyopia.
    • Cylindrical (toric) lenses are curved more in one direction than another to make up for irregularities in the cornea that cause astigmatism.
    • Convex lenses or bifocals refocus the image on the retina when people with presbyopia lose the ability to focus on close objects around age 40.

    The power of a lens determines the amount of correction. It is specified in diopters. The higher the number of diopters, the more vision correction the lens provides.

    Credits

    Current as of: May 5, 2019

    Author: Healthwise Staff
    Medical Review: Adam Husney MD - Family Medicine


    Related Services

    Related Locations


    Notice of Privacy Practices · PUBLIC RECORDS REQUEST · FINANCIAL ASSISTANCE · NON-DISCRIMINATION NOTICE

    REQUEST FROM LAW ENFORCEMENT FOR RELEASE OF PROTECTED HEALTH INFORMATION
    6051 US HIGHWAY 49, HATTIESBURG MS 39401 · 601-288-7000 · © FORREST HEALTH · ALL RIGHTS RESERVED ·

    A Board of Trustees appointed by the Forrest County Board of Supervisors is charged with the oversight of Forrest Health.  The system is completely self supporting and does not operate on local taxes.
    Forrest Health facilities are approved by the U.S. Department of Health and Human Services for participation in Medicare and Medicaid Programs.