Which of the following surgical procedures reshapes the cornea?
A) enucleation
B) laser photocoagulation
C) photorefractive keratectomy
D) scleral buckling
C
Explanation: Photorefractive keratectomy reshapes the cornea. Enucleation removes the eyeball. Laser photocoagulation destroys a small piece of the retina. Scleral buckling stabilizes a detaching retina.
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Fill in the blank(s) with correct word
Antioxidants work by stabilizing free radicals that can harm cells
Indicate whether the statement is true or false.
Air entering the body through the nose travels first through the ________ and then through the ________ before entering the lungs
A) upper respiratory tract; lower respiratory tract B) upper respiratory tract; aorta C) lower respiratory tract; pulmonary artery D) alveoli; upper respiratory tract
-algia: __________
Fill in the blank(s) with correct word