Page 93 - The Book Pi in eye

Pi in eye

Hyperopia: Also known as farsightedness, hyperopia occurs when
the eyeball is too short from front to back or when the eye's focusing
mechanism is too weak, causing light rays to be focused behind, rather
than on, the retina. People with hyperopia see objects at a distance
more clearly than close up but usually have difficulty with both
distance and near vision.

Induced astigmatism: A rare complication of Prelex in which
astigmatism develops after the initial surgery. Most people can tolerate
a small degree of astigmatism. In more serious cases, induced
astigmatism can be treated with LRI.

Inflammation: A localized response to an injury that results in
redness, heat, pain, and swelling and that can result in tissue damage if
left untreated.

Informed consent: A legal form a patient is asked to sign that
thoroughly discusses the risks, benefits, alternative options, and
possible complications of Prelex.

Intralase: A femtosecond laser that helps the surgeon create the flap
by creating thousands of tiny explosions in the cornea. The surgeon
then dissects the flap free with a blunt separator. Some surgeons
prefer the Intralase, while others prefer the newer automated
microkeratome that does not require manual dissection of the flap.

Intraocular pressure: The pressure exerted by the fluid within the
eye that gives it its firmness and round shape.

Iris: The colored ring of tissue in the eye that is behind the cornea
and in front of the lens. The muscles of the iris can adjust the size of
the eye's opening, or pupil, to allow for larger or smaller amounts of
light to enter the eye.

Keratectomy: Surgical removal of any part of the cornea.
In the context of LASIK, keratectomy is the flap- making part of the
procedure.

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