Stroma
The middle, thickest layer of tissue in the cornea.

Hyperopia
The inability to see near objects as clearly as distant objects, and the need for accommodation to see distant objects clearly.

Inflammation
The body's reaction to trauma, infection, or a foreign substance, often associated with pain, heat, redness, swelling, and/or loss of function.

Myopia
The inability to see distant objects as clearly as near objects.

Astigmatism
A distortion of the image on the retina caused by irregularities in the cornea or lens.

Ablate
In surgery, is to remove.

Informed Consent Form
A document disclosing the risks, benefits, and alternatives to a procedure.

Keratitis
Inflammation of the cornea.

Sclera
The tough, white, outer layer (coat) of the eyeball that, along with the cornea, protects the eyeball.

Vitreous Humor
The transparent, colorless mass of gel that lies behind the lens and in front of the retina and fills the center of the eyeball. Wavefront a measure of the total refractive errors of the eye, including nearsightedness, farsightedness, astigmatism, and other refractive errors that cannot be corrected with glasses or contacts.