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North Valley Eye Care
114 Mission Ranch Blvd.
Suite #50 Chico, CA 95926
(530) 891-1900 | Map It!		  
   
 
L A S I K, "laser assisted in-situ keratomileusis",
is a procedure  that  uses cool laser energy  to reshape the cornea.
LASIK candidates  should be in good general health & present with
a  normal  ocular health evaluation. The surgery, takes about five to
ten minutes, with the laser application taking less than two minutes
  CustomVue LASIK Movie      Click above for Patient Information Booklets about:     

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. 

In  LASIK  surgery,  precise and controlled  removal of corneal  tissue by a special  laser, reshapes  the
cornea changing its focusing power.  LASIK  is a procedure that  permanently changes the shape of the
cornea,  the  clear  covering  of  the  front of  the eye, by  using  an  excimer  laser.  A  knife,  called  a
microkeratome,  is used to  cut a  flap in the cornea.  A hinge is left  at one end of this flap.  The flap is
folded back revealing the stroma,  the middle section of the cornea.  Pulses from a computer-controlled
laser vaporize a portion of the stroma and the flap is replaced.
 
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