12
University Daily Kansan
Campus/Area
Thursday, Oct. 17, 1985
Clear vision Eye doctor describes advances in care
By Stefani Day Of the Kansan staff
A new contact lens that combines the sharpness of hard lenses with the comfort of soft lenses was developed recently, an ophthalmologist at Shawne Mission Medical Center said Tuesday.
The new "Saturn" lens is a gaspermeable hard lens surrounded by a soft lens "skirt", Toby Hartong, ophthalmologist, said at the Med Center Tuesday night in a lecture about advances in eye care.
The rigid part of the lens retains the advantages of hard lenses such as clearer vision, gas permeability and astigmatism correction, Hartong said. The soft skirt makes the lens more comfortable and helps it stay in place as well as a soft lens.
Precision Cosmet Co. Inc. introduced the Saturn lens in San Francisco about two weeks ago at the anatomical department of the army of Ophthalmology. Hartong said.
Other advances in eye care that Hartong discussed include radial keratotomy and laser surgery.
Radial keratotomy is the technique
of correcting nearsightedness by making tiny incisions in the cornea, the transparent tissue on the front of the eye.
Myopia, or nearsightedness, occurs when the eyeball is too long, causing light rays to focus in front of the retina.
Hartong said a diamond-tipped scalpel was used to make incisions around the edge of the cornea, somewhat like bicycle spokes. The tiny cuts cause the edges of the cornea to weaken and be pushed out by the force of the blade. This leads to a shortening of the eyeball and improvement of myopia.
Although the technique has been available for about eight years, Hartong said, it has only gained wide popularity in the past five or six.
He said he did not advocate the procedure, however, because complete correction was not assured and mistakes were permanent.
"There isn't an eraser on the end of that scalpel," he said.
Another advance, the use of lasers, is gaining rapid acceptance by ophthalmologists, Hartong said.
Tumour doctors, Hartong said.
phocoagulates and YAG, have been used to treat glaucoma, secondary cataracts and diabetic retinopathy
ophthalmologists, Hartong said.
Two types of lasers.
Argon and krypton lasers both use photocoagulation, which means the high energy of the laser is absorbed in colored tissue and turns into heat energy which "melts" the tissue. They usually are used to treat the back of the eye, such as in diabetic retinopathy, a condition in some diabetics that causes deterioration of the retina.
YAG lasers — named for the components ytrium, aluminum and garnet — differ from photocoagulates in that they can cut clear membranes. They work by focusing enough energy on a point that electrons are stripped away from atoms and a hole is burst.
Sometimes after cataract surgery, for which lasers cannot yet be used, the clear membrane that is left covering the lens implant becomes hazy, in essence creating a "secondary" cataract. Hartong said.
YAG lasers can be used to create an opening in the membrane without having to take the patient to the operating room.
KU on Wheels presents Bus Rider's Bad Weather Tips #1,#2,#3 for better bus service
1 If you live on Daisy Hill, try to take a bus leaving at :03 or :05 after the hour to ensure yourself a seat . . . and a less crowded bus!
2 When leaving campus for Naismith-Oliver, try to take the Naismith-Oliver bus instead of the more crowded Heatherwood-Ridgecount bus—they come one right after the other!
Remember to smile at the bus driver! He might just smile back!
This semester there are more people riding the bus and keeping dry than ever before!
We thank you for your patience and your patronage KU on Wheels is a service of Student Senate
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