Dr William Boothe

Epithelium is the outermost layer of cells of the cornea and is the eye's first defense against infection.

Excimer laser is an ultraviolet laser used in refractive surgery to remove corneal tissue.

Farsightedness is the common term for hyperopia.

Dr Boothe

Retinitis Pigmentosa (RP) - Hereditary degeneration of the retina. It usually leads to legal blindness by progressively reducing peripheral vision. There are three main forms:

* dominant, where about half of the family members develop the disease.
* X-linked, for which the females are carriers and males develop the disease in alternating generations.
* recessive, where there is no family history of the disease, but it occurs on occasion.

Rigid Gas-Permeable (RGP) Contact Lenses - Also known as Gas-Permeable (GP) or oxygen-permeable contact lenses. Contact lenses which allows air to pass through them. They are hard, but more flexible than the older-style “hard” contact lenses which were used before 1971. They contain silicone, which is flexible and since it allows oxygen to pass through it, these lenses are more comfortable and healthier for the eye, which needs lots of oxygen.

Dr William Boothe Surgeon

: Pachymetry - (puh-KIM-uh-tree) Testing of the cornea’s thickness, done to determine whether the cornea is strong enough for a LASIK procedure. It’s also done for some disorders where the cornea becomes thickened by excess water. The instrument used is a pachymeter.

Penetrating Keratoplasty (PK) - A corneal transplant. A full-thickness, circular piece of the cornea is removed and replaced by a similar piece from a donor. It can restore vision to an eye which had previously been blind.
Dr Boothe