LASIK
C’est la méthode le plus développée et
préférée de nos jours afin de se débarrasser
des lunettes. Cette application rapide (4-5 minutes), sans douleur
et sans perte de sang, augmente la popularité de ce genre
de traitement. LASIK est l’abréviation du terme “Laser
Assisted Stromal In-Situ Keratomileusis”. On corrige le défaut
de focalisation en l’atomisant un fragment de la couche intermédiaire
de la cornée par une application de laser. L’épithélium,
enlevé dans l’ application PRK d’ancienne méthode,
n’est surtout pas touché. Ainsi on ne met pas de bandage
sur les yeux après l’opération. Le patient reprend
ses activités dans 24 heures car la clarté de la vision
revient rapidement. Il faut aussi souligner le fait qu’une
telle régression est impossible.
Le fait qu’une absence de régression partielle, une
réussite sur la netteté de la vue avec une opération
sans douleur, comparé à une application de PRK, rend
le LASIK l’ espoir des millions de patients ayant des dioptries
oculaires trop avancés.
Voici les avantages de LASIK :
It
is an extremely effective outpatient procedure that is suitable for
low, moderate, and higher prescriptions. It can be used to correct severe
prescriptions, and is currently one of the most commonly performed healthcare
procedures in the world.
LASIK is the abbreviation of the term "Laser Assisted Stromal In-Situ
Keratomileusis".
LASIK gives a new shape to the cornea in order to give the eye its natural
focusing capacity.
In
LASIK, a special instrument called microkeratome creates a partial
thickness corneal flap and then excimer laser ablation is
performed over the imposed
corneal bed. The ablation profile is related to the refractive
error. For myopic corrections corneal curvature is flattened
and for hyperopic
corrections a half-torus (the shape you obtain if you press a ring
halfway on a Dow) shaped corneal tissue is removed in order
to have a steeper
cornea. For astigmatism crescent or football shaped ablation is
performed. In order to figure out the effect of LASIK, you
can roughly imagine
that with excimer laser the cornea is shaped or carved like the
shape of the contact lens you need to see clearly. After
the laser reshaping
process, the corneal dust will be washed away. And the corneal
flap is gently put back. Thanks to continuous vacuuming function
of the corneal
endothelium (cells located at inner face of the cornea), the corneal
flap adheres easily like a sticky note. The flap naturally
keeps its
position without sutures or other surgical intervention.
In some practices, eyes are covered after the LASIK operation
but since we are sure of the flap's persistence we don't
cover our
patients' eyes
after the procedure. We recommend sleeping after the procedure.
You can resume your work the next day. Visual recovery is extremely
fast; more than 80% of the aimed vision is achieved even in
the first
day.
We improved our medical regimen so that most of our patients
don't even have the slightest discomfort after the LASIK procedure.