Laser Cutting Journal

can someone help me solve this supply/demand graph?

5. During the late 1990’s many consumers were having their vision problems corrected by laser surgery. An article in the Wall Street Journal in early 2001 noted two developments in the market for laser eye surgery. The first was about increasing concerns related to side effects from the surgery, including blurred vision and, occasionally, blindness. The second development was that the companies renting eye-surgery machinery to doctors had reduced their charges. One large company had cut its charge from $250 per patient to $100. Use a demand and supply graph of laser surgery to illustrate the effects of these two developments on the market for laser eye surgery. In what direction would equilibrium price and quantity change?

i know the first development would make demand shift left, but what about the second development?

Thanks for any help!

First, demand for eye surgery decreased due to medical concerns; thus, less demand for eye surgery. Then eye surgery costs decreased in an attempt to recapture market (increase consumer demand to meet supply of doctors doing surgery).
Supply of doctors doing surgery would decrease over time as consumer demand decreased. Thus, rental of machinery decreases. Rental rates decreased to generate demand for machines. BUT, overall there is:
- a continuing consumer demand decrease
- a continuing supply of doctors decrease
Lowering machinery rate of rental in a overall decreasing market will not increase machinery rental rates or customer demand or even the number of doctors simply because the consumer has determined that medical concerns still exist.
Price could equalize at what the market demands, but consumer demand will continue to decrease.

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Laser Cutting the Cover for the Rickshaw Moleskine Folio

Differences Between Lasik and Lasek

LASIK eye surgery gives many people the opportunity to stop wearing contact lenses or glasses. For some individuals, however, this procedure is not the best solution. While traditional LASIK works by making a small cut on the eye, peeling back that layer and then using a laser to reshape the cornea, this surgery is sometimes not right due to various characteristics of the eyes. So what can these people do in order to correct their vision? Fortunately, a new procedure known as LASEK has emerged to help people improve their eyesight even if they don’t qualify for traditional laser surgery.

Traditional LASIK Surgery

LASIK, or Laser-Assisted In Situ Keratomileusis, was introduced in the 1990s to replace older eye surgery techniques. In this procedure, the surgeon makes a cut on the eye. The small flap is then folded down and a special laser is used to reshape the cornea of the eye. Once the procedure is complete, the flap is folded back into place.

This surgery has become one of the most popular cosmetic procedures performed today, with more than one million Americans undergoing LASIK each year. However, the procedure is not right for every patient. Conditions such as dry eyes, chronic eye infections and autoimmune diseases can make a person ineligible for the procedure. Fortunately, another type of surgery known as LASEK has been developed to help some of these patients.

What is LASEK?

When the shape or condition of the eyes makes LASIK impossible, a slightly different laser surgery known as LASEK, or Laser Assisted Sub-Epithelial Keratomileusis, offers hope. Doctors first place a special solution to the outer surface of the eye. Next, the epithelium is cut with a very find blade called a trephine, allowing the doctor to then reshape the corneas with the laser. The epithelium can then be gently slid back into the correct position.

The Benefits of LASEK

What are some of the potential advantages of the LASEK procedure? The greatest benefit is that it allows people who might have previously been ineligible for laser eye surgery to have their vision corrected. Other significant advantages include the remarkable speed of the procedure as well as faster healing time.

How can a patient determine which type of laser eye surgery is the right choice? According to a study published in the American Journal of Ophthalmology, “Both procedures seem safe, effective, and predictable for the treatment of low to moderate near-sightedness (myopia).” Another study published in Optometry Today even suggested that LASEK may in fact be even better than LASIK. However, all patients should rely on the guidance, expertise and recommendations of a qualified surgeon when making a decision.

About the Author

Thanks to the LASEK procedure, even people with thin or flat corneas can have laser vision correction . While LASIK remains the most commonly performed laser eye surgery, the recent introduction of LASEK has grown in popularity. Patients considering laser eye surgery should discuss their options with their doctors.