Refractive Surgeries

Question 1

The refractive surgery that uses a laser applied directly to the surface of the cornea, rather than under a flap, which is considered more desirable for patients with thinner corneas is

Answer 1

Photorefractive keratectomy

Question 2

The refractive surgery procedure that uses a series of radial incisions to flatten the cornea is:

Answer 2

Radial Keratometry

Question 3

What does corneal pachymetry do?

Answer 3

Measures thickness of cornea

Question 4

Why is it important to perform pachymetry?

Answer 4

To ensure that the cornea is thick enough to have layers removed

Question 5

What is the most invasive refractive surgery procedure?

Answer 5

Clear Lens Replacement

Question 6

The refractive surgery procedure that uses a microkeratome to cut a flap in the cornea and then a laser to either flatten the central cornea or the peripheral cornea is:

Answer 6

LASIK

Question 7

What are Intacs (Intracorneal rings) used for?

Answer 7

To correct low degrees of myopia and also to flatten the corneas in some Keratoconus patients

Question 8

All of the following (Dry eye, increase in cell growth in the epithelium, light sensitivity, fluctuation of vision) may be common side effects of refractive surgeries except:

Answer 8

Increase in cell growth in the epithelium

Question 9

All of the following (Loss of vision, infection, flap loss, increased cell growth in the endothelium) may be a more serious side-effect of refractive surgeries except:

Answer 9

increased cell growth in the endothelium

Question 10

A condition that may result as a consequence of reducing the thickness of the cornea with refractive is sometimes referred to as:

Answer 10

Keratectasia