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Published on: 08 Mar 2017 by e-kalman
A cataract is when your
eye lens becomes cloudy. This eye lens is situated at the back or your colored
iris that’s close to the front of your eye. To some degree cataracts usually
comes with aging, but it can also be caused due to diabetes.
If your vision is
extremely affected with this cloudiness, your eye doctor can replace your lens
by using a plastic lens. A cataract
surgery is generally considered as effective and safe. Sometimes the same
surgery can be performed for reasons, like short-sightedness that is very bad,
which is known as a replacement lens surgery.
Essentially, your eye
will operate like a camera that has 2 lenses. Your cornea which is a
transparent layer covers the front of your eye, while your crystalline lens is
situated at the back of your pupil.
The function of your
cornea is to focus on an image, while your ordinary lens refines it further.
With aging, your ordinary lens may become cloudy and blurry which will prevent
the light to pass through, and alter rays that will cause your vision to become
obscured and unclear. If your lens is hazy it’s typically called a cataract.
Look at the different
types of surgeries that will show you how these procedures have evolved and
changed over the years:
ICCE or intra-capsular cataract extraction
This procedure was used
during the 1980s. However, it’s hardly used anymore because of the development
of newer procedures that is much more effective. This technique involved the
removal of the whole ordinary lens together with its capsule. It required a
large incision into your eyeball, which is extra intrusive.
A surgeon will then
insert some medicine to allow your eye’s zonular fibers, which hold your lens
in its place, to soften. They will apply liquid nitrogen onto your lens through
a probe and freeze it. When he/she gradually removes the probe from your eye, the
ordinary lens will come out with it.
The intra-ocular lens
will then be placed in the front of your iris and closed up with some stitches
to heal. However, with the large incision, you might be at risk to develop
inflammation and retinal detachment.
ECCE or extra-capsular cataract extraction
With this procedure, your
surgeon will still remove your eye’s ordinary lens, but the stabilizer capsule
will stay in place and remain intact. It will have a considerably smaller
intrusive incision as the procedure above.
The surgeon will enter
your eye through this small opening, which is close to your corneas outside
edge. He/she then carefully opens the front part of your lens capsule with a
tiny circular tear or by capsulorhexis. The lens’ hard nucleus is extracted through
applying some pressure carefully by the use of specific tools. The soft cortex
lens is then eliminated through suction.
Thereafter, the surgeon
inserts visco-elastic material into your unfilled lens capsule in order to
preserve the form while he/she implants the intra-ocular lens, which will be
removed after it’s placed successfully. The rear of your lens capsule will
remain intact inside your eye to assist and firmly support your new
intra-ocular lens that is placed. With 2 or 3 stitches this small incision will
be protected and sealed.
This procedure is
complicated to learn, although it has a remarkable rate of success, and most
surgeons are steadily acquiring this technique. Over time, most surgeons
continue in perfecting the development of phacoemulsification, as well as
making it extra effective and lowering any risk.
Your surgeon will create
a small round incision in the tissue next to your cataract through a
capsulorhexis procedure. They will use a stream to separate your cataract and
cortex, together with a razor-sharp needle and ultrasound waves, which gets
injected into your cornea. It will emulsify your cataract after which it can be
sucked out with a phaco probe.
Your cortex is removed,
while the subsequent capsule stays behind and stabilizes your intraocular lens
that is inserted. This exact procedure of surgery may differ because of the
magnitude and compactness of your cataract which has to be removed.
SICS or small incision cataract surgery
This procedure will
create a self-seal, small incision and lower the risk to develop astigmatism.
However, it needs to be a sizable incision that is sufficient enough for the
nucleus lens to fit entirely to be removed. They can prepare your nucleus
inside your eye to be extracted, which must then be removed very careful
without harming your subsequent lens capsule and cornea.
SICS that is done
manually, compared to a phaco procedure it has many advantages. It can be used
on about any type of cataract, as well as less training will be involved
compare to a phaco surgery procedure. Additionally, it also requires fewer
resources. Consult your eye specialist today for more information.