Optician: an expert in the art and science of making and fitting glasses and may also dispense contact lenses.
PRK: the acronym for photorefractive keratectomy which is a procedure involving the removal of the surface layer of the cornea (epithelium) by gentle scraping and use of a computer-controlled excimer laser to reshape the stroma.( -
Dr William Boothe)
Dr Boothe: Ghost Image: a fainter second image of the object you are viewing.
Inflammation: the body's reaction to trauma, infection, or a foreign substance, often associated with pain, heat, redness, swelling, and/or loss of function.
Undercorrection: a complication of refractive surgery where the achieved amount of correction is less than desired. (
Dr Boothe )
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Keratotomy: a surgical incision (cut) of the cornea.
Higher order aberrations refractive errors, other than nearsightedness, farsightedness, and astigmatism, that cannot be corrected with glasses or contacts.(
Dr Boothe )
Dr William Boothe: Astigmatism: a distortion of the image on the retina caused by irregularities in the cornea or lens.
Dr Boothe: Presbyopia: the inability to maintain a clear image (focus) as objects are moved closer. Presbyopia is due to reduced elasticity of the lens with increasing age.
