Page 92 - The Book Pi in eye

Rajesh Khanna, MD

break up tissue one molecular layer at a time, vaporizing it without
generating heat that could damage surrounding tissue.

Eyelid Speculum: A device placed between the upper and lower
eyelids to keep the patient from blinking during surgery. It is painless,
because the eye is anesthetized.

Farsightedness: See hyperopia.

Femtosecond laser: an ultra-short pulse of light, used to make
bladeless incisions on the cornea, make opening in the lens capsule
and cuts in the lens in Prelex or cataract surgery, . It is also used to
make flaps for Lasik.

Floaters: Floaters are deposits of various size, shape, consistency,
refractive index, and motility within the eye's vitreous humor, which is
normally transparent. Usually result of posterior vitreous detachment

Food and Drug Administration (FDA): The federal agency that
regulates the manufacturers and distributors of drugs and devices.

Ghosting: The appearance of double images or shadows around
images. Ghosting is sometimes experienced by people with
astigmatism and can also result from irregular healing of the corneal
surface after LASIK.

Glaucoma: A disorder of the eye characterized by an increase of
pressure within the eyeball.

Halo: A side effect of LASIK and Presbyopic Implants in which the
patient sees a glow around lights at night. Halos usually decrease over
time.

Haze: Scarring of the corneal stroma, or corneal bed.
Significant haze occurs rarely after PRK, and does not occur after
LASIK.

Higher-order aberration: Irregularity of vision that cannot be
corrected by glasses or contact lenses.

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