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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.
 

Click here for larger animated images  
  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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OFFICE HOURS: 
MON 10:00 - 6:00
TUE 9:00 - 12:00
WED 10:00 - 8:00
THU Closed
FRI 10:00 - 6:00
SAT (Alt) 9:00 - 1:00
SUN Closed





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Dr. Lisa Keiser | Optometrist Waterford, PA
At Keiser Family Eye Care in Waterford, PA, we offer high quality eye and vision care for the entire family in a comfortable, friendly atmosphere.

We will make every effort to take a complete approach to your eye care. This means that we will take the time to not only understand your eye health and visual needs, but your general health, lifestyle, and dietary habits as well. This is somewhat rare in health care today, but we think you will find it to be a refreshing change.

Seeing 20/20 doesn't necessarily mean your eyes are healthy. Many eye problems can only be detected during a thorough eye exam. Our eye doctor uses the latest innovative diagnostic equipment to detect even the smallest changes in your vision and eye health. We will evaluate your risk factors for diseases of the eye. It's important to know that diseases of the eye can also be an indicator of general health issues.

Our patient care coordinator Tammy Latta will help you with questions regarding insurance billing, scheduling, ordering or any other questions about your visit in general. We are here to take care of you and your family, and we look forward to your visit.

Schedule your Eye health and Vision appointment today with our experienced eye care providers and give your vision the level of care and attention it deserves.



Keiser Family Eye Care 503 High St. Waterford, PA 16441 Phone: (814) 796-1133 Fax: (814) 796-1133

Keiser Family Eye Care, P.C. proudly serves Waterford, PA and the areas of Erie, Lowville, Fairview, Union City, Edinboro and Cambridge Springs.

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