Lasik surgery terms P to R

Here are the common terms you will hear or see on your many trips to the doctor before, during, and after your surgery. Now you will know what they mean.

• PRK- the acronym for photorefractive keratectomy which is a use of a computer-controlled excimer laser to reshape the stroma.
• Presbyopia- the inability to (focus) as objects is moved closer.
• Pupil- a hole in the center of the iris that changes size in response to changes in lighting.  It gets larger or smaller in different lighting conditions.
• Radial Keratotomy-  surgical procedure designed to correct nearsightedness
• Refraction- a test to determine the refractive power of the eye.
• Refractive Errors- imperfections in the focusing power of the eye.
• Refractive Power- the ability of the eye to bend light as light passes through it.
• Retina- a layer of sensory tissue that lines the inside wall of the eye.