Ablation zone is the area of tissue that is removed during laser surgery.
Accommodation is the ability of the eye to change its focus from distant objects to near objects. Acuity is clearness, or sharpness of vision. Astigmatism is a distortion of the image on the retina usually caused by irregularities in the cornea. Cornea is the clear front part of your eye. Diopter is the measurement of refractive error.