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PRK (Photorefractive Keratectomy) is a vision correction procedure which uses a laser to reshape the cornea. and takes just a few minutes and is done under topical anesthesia.

The cornea is a part of the eye that helps focus light to create an image on the retina. It works in much the same way that the lens of a camera focuses light to create an image on film. The bending and focusing of light is also known as refraction. Usually the shape of the cornea and the eye are not perfect and the image on the retina is out-of-focus (blurred) or distorted.

These imperfections in the focusing power of the eye are called refractive errors. There are three primary types of refractive errors: They are myopia, hyperopia and astigmatism. Persons with myopia, or nearsightedness, have more difficulty seeing distant objects as clearly as near objects. Persons with hyperopia, or farsightedness, have more difficulty seeing near objects as clearly as distant objects. Astigmatism is a distortion of the image on the retina caused by irregularities in the cornea or lens of the eye. Combinations of myopia and astigmatism or hyperopia and astigmatism are common.
 

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  MYOPIA (Nearsighted)   HYPEROPIA (Farsighted)
     
 

Light rays are focused in front of the retina instead of directly on the retina

 

Light rays are not bent enough to focus directly on the retina

 
  ASTIGMATISM   PRK  
     
 

Light rays are focused at more than one point on the retina

 

The Cornea is reshaped so light rays can focus directly on the retina

 

To treat nearsightedness, the cornea is made flatter by removing tissue from the center of the cornea.

To treat farsightedness, the flat cornea is made steeper by removing peripheral tissue in a ring shape on the outer edges of the cornea. This steepens the central visual part of the cornea.

To treat astigmatism, the cornea is made less oval shaped. Astigmatism means that the eye has an oval or football shape.

The laser reduces the oval shape making the focusing ability clear in all directions. Astigmatism can be treated at the same time as nearsightedness and farsightedness.
 

 
 
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Buffalo Grove Eye Care
313 W. Dundee Road
Buffalo Grove, Illinois 60089
Telephone: (847) 541-1184
Fax: (847) 541-1194
Libertyville Vision
307 S. Milwaukee Avenue
Libertyville, Illinois 60048
Telephone: (847)362-3444
Fax: (847) 362-4672
Buffalo Grove
Mon:
10:00am-6:00pm
Tues:
10:00am-7:00pm
Wed:
CLOSED
Thurs:
10:00am-6:00pm
Fri:
7:00am-3:00pm
Sat:
8:00am-1:00pm
Libertyville
Mon:
7:00am-5:00pm
Tues:
10:00am-7:00pm
Wed:
9:00am-6:00pm
Thurs:
9:00am-6:00pm
Fri:
7:30am-3:30pm
Sat:
8:00am-1:00pm


Buffalo Grove Eye Care 313 W. Dundee Road Buffalo Grove, IL 60089 Phone: (847) 541-1184 Fax: (847) 541-1194
Libertyville Vision 307 S. Milwaukee Avenue Libertyville, IL 60048 Phone: (847) 362-3444 Fax: (847) 362-4672

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