Posterior Capsule Opacification
Overview
The lens
capsule is the thin, elastic-like bag that holds the
intraocular lens (IOL) in position
after cataract surgery.
During the operation, the front (anterior) portion of the lens
capsule is carefully opened and the cataract is removed. The IOL is
inserted into the remaining (posterior) portion of the capsule.
The remaining portion of the capsule becomes clouded in about 25% of
cataract surgery patients. When this occurs, patients experience
symptoms similar to those from the original cataract. That’s why
posterior capsule opacification is also known as secondary
cataract.
Signs and Symptoms
- Gradual decrease of vision
- Blurred vision
- Glare from lights and sun
Detection and Diagnosis
The doctor can diagnose posterior capsule opacification during a
routine eye exam using a slit lamp
microscope. It is more easily detected if the
pupils are
dilated.
Potential acuity testing is often
performed to determine the expected improvement of vision.
Treatment
A simple procedure called a YAG
posterior capsulotomy is performed to restore vision lost from
the clouded capsule. The YAG is a type of “cold” laser used to
create a small opening in the center of the capsule, allowing a
clear area for light to enter the eye. The procedure is painless,
requires no anesthesia, and has very little risk since no incision
is required.
After the dilating drops wear off from the procedure, most patients
notice an immediate improvement in vision. The improvement each
person experiences is dependent on the extent of the capsular
clouding and the overall eye health.
St. Luke's Cataract & Laser
Institute provides this on-line information for educational and
communication purposes only and it should not be construed as
personal medical advice. Information published on this St.
Luke's website is not intended to replace, supplant, or augment a
consultation with an eye care professional regarding the
viewer/user's own medical care. St. Luke's disclaims any and
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