people still need to wear glasses or contact lenses after cataract surgery for either near and/or
distance vision, for some activities, or in low light.
WHAT ARE THE TYPES OF INTRA-OCULAR-LENSES (IOL) THAT ARE
AVAILABLE FOR ME?
Your ophthalmologist will help you decide on the type of IOL that will replace your cloudy lens.
There are IOLs available to treat nearsightedness (myopia), farsightedness (hyperopia), and
astigmatism. IOLs usually provide either near or distance vision-- these single focus lenses are
called monofocal IOLs. Some more recently developed IOLs may provide for near,
intermediate, and distance vision-- these multiple focus lenses are called multifocal IOLs.
Lenses that have some focusing power are called accommodative IOLs. IOLs that treat
astigmatism are called toric IOLs.
You can also have one eye corrected for near vision, and the other for distance vision, a choice
called monovision. With monovision the implanted IOLs have two different powers, one for
near vision in one eye, and one for distance vision in the other eye. Monovision allows for near
and distance vision but can decrease depth perception. Although many patients adjust well to
monovision, some may find it uncomfortable, which may require compensating glasses, contact
lenses or another operation to change the IOL.
No IOL is perfect, and often glasses or contact lenses are needed for certain activities even if you
have chosen a special IOL lens.
DO I HAVE ASTIGMATISM IN ADDITION TO MY CATARACT? ARE THERE
TREATMENTS FOR IT?
Patients with nearsightedness and farsightedness may also have astigmatism. Astigmatism is
caused by an irregularly shaped cornea; instead of being round like a basketball, the cornea is
shaped like an American style football. This can make your vision blurry. In addition to toric
IOLs, astigmatism can be reduced by glasses, contact lenses, and refractive surgery (Laser
assisted in situ keratomileusis [LASIK] or Photorefractive keratectomy [PRK]).
There is also a procedure called a limbal relaxing incision (LRI), which can be done at the same
time as the cataract operation, or as a separate procedure. A LRI is a small cut or incision the
ophthalmologist makes into your cornea to make its shape more round. Astigmatic Keratotomy
(AK) is a similar procedure that involves a smaller, more central incision in the cornea than the
Patient initials _________
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Eye Surgeon’s initials __________
DOH‐MQA 1255, 10/11, Rules 64B8‐9.017 and 64B15‐14.012