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This is a visual defect where the light rays focus in front of the retina instead of on it due to a steeper cornea or longer eyeball. People with myopia can see nearby objects clearly but distant objects appear blurred. For further information or to book an appointment please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondeqouit (585-266-7880).Cornerstone Eye Associates - your VISION for LIFE

This is a visual defect where the light rays focus behind the retina instead of on it due to a flatter cornea or shorter eyeball. People with hyperopia have difficulty seeing objects close up. For further information or to book an appointment please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondeqouit (585-266-7880).Cornerstone Eye Associates - your VISION for LIFE

A type of bifocal lens in which the lens power changes gradually, from the center to the periphery of the lens. For further information or to book an appointment please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondeqouit (585-266-7880).Cornerstone Eye Associates - your VISION for LIFE

Astigmatism is characterized by an irregularly shaped cornea that causes light images to focus on two separate points in the eye, producing a distorted image. Symptoms range from visual discomfort in mils cases, to severe blurring and distortion similar to a reflection in a fun-house mirror. For further information or to book an appointment please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondeqouit (585-266-7880).Cornerstone Eye Associates - your VISION for LIFE

In addition to the previously stated parts of your CL prescription, your RX may also note how often your CLs must be replaced (once a month, every two weeks, once a week, daily, etc.) as instructed by your eye care professional. For further information or to book an appointment please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondeqouit (585-266-7880).Cornerstone Eye Associates - your VISION for LIFE

In the United States, contact lens prescriptions always indicate a specific brand. The law states that contact lens retailers must sell you that particular brand and no other. However, in the case of some “private-label” contact lenses that are sold only by eye care professionals, substitution of an equivalent national brand or private-label brand may be permitted. For further information or to book an appointment please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondeqouit (585-266-7880).

Cornerstone Eye Associates - your VISION for LIFE

This is included on a prescription only if the contact lenses change or enhance your eye color. Or, in the case of special effect contacts, a particular design would be written here, such as “cat-eye.” Color and style names differ from one brand to another. For further information or to book an appointment please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondeqouit (585-266-7880).

Cornerstone Eye Associates - your VISION for LIFE

Bifocal CLs usually contain a prescription for reading or other close-up viewing. The add power is expressed in diopters (a unit for refractive power of lenses). Even if the plus sign is not written on the prescription, it is assumed to be there. For further information or to book an appointment please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondeqouit (585-266-7880).Cornerstone Eye Associates - your VISION for LIFE

A measurement necessary for CLs that correct for astigmatism. The axis is expressed in degrees. It indicates the orientation of the cylinder in the lens, in order to compensate for the cornea’s oval, rather than round, shape. For further information or to book an appointment please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondeqouit (585-266-7880).Cornerstone Eye Associates - your VISION for LIFE

A cylinder measurement is necessary if your lens corrects for astigmatism (the cornea has an oval, rather than a round shape). Measured in diopters (a unit for refractive power of lenses), the cylinder shows how much astigmatism you have. The negative sign means myopic astigmatism (inability of the eye to focus sharply on distant objects). A plus sign would mean hyperopic astigmatism (inability of the eye to focus sharply on nearby objects). For further information or to book an appointment please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondeqouit (585-266-7880).Cornerstone Eye Associates - your VISION for LIFE