The opposite of myopia is hyperopia (long-sightedness). Myopia Commonly known as near-sightedness or short-sightedness is a condition of the eye where the light that comes in does not directly focus on the retina but in front of it, causing the image that one sees when looking at a distant object to be out of focus, but in focus when looking at a close object.
OD AND OS WHICH IS RIGHT AND LEFT PLUS
The spherical power of a lens is indicated with a plus sign (+) for hyperopia and a minus sign (-) for myopia. Power The spherical power, indicated on the prescription as power “PWR” or sphere “SPH”, of a soft contact lens is calculated in a unit of measurement equal to the reciprocal of the focal length of a lens called a diopter “D”. Both Eyes (OU) If both the left and right eye has the same diagnosis and prescription information, the abbreviation “OU” is used instead, or “ocular uniter,” meaning both eyes. Left Eye (OS) OS stands for oculus sinister, the Latin phrase for “left eye.” This abbreviation precedes the prescription information for the left eye, which is always listed second. The prescription also includes: Right Eye (OD) OD stands for oculus dexter, the Latin phrase for “right eye.” This abbreviation precedes the prescription information for the right eye, which is always listed first. Desio brands are available in two curvatures and sizes and these measurements might not be included in the prescription. A prescription for soft contacts includes a particular brand, as not all styles and materials are the same, and a number of other measurements per eye such as the curvature and diameter of the lens.
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