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Lasers - YAG, Diode Lasers - YAG, Diode

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YAG Laser Posterior Capsulotomy for Cataracts

The most common complication of adults having standard extracapsular surgery or phacoemulsification for cataracts is clouding of the part of the lens covering (capsule) that remains after surgery, called posterior capsule opacification. If the cloudiness affects your vision, you may choose to have a laser treatment called Nd:YAG posterior capsulotomy to correct this problem.

A laser (Nd:YAG laser) is used to cut a hole in the clouded back lining of the lens capsule to allow light to pass through the membrane to the retina at the back of the eye.

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What To Expect After Laser

Nd:YAG laser posterior capsulotomy is an outpatient procedure. It does not require anesthesia, and it is painless. The person may wait in the outpatient surgery area or the doctor's office after the procedure so that he or she can have the pressure in the eye (intraocular pressure) checked. Intraocular pressure (IOP) is the pressure caused by the fluid inside the eye that helps keep the shape of the eye.

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Why It Is Done

After cataract surgery, some people notice cloudiness (sometimes called aftercataract) after several months or years. In some people, it can become very dense and cause as much or more vision loss as the original cataract. The decision to have this procedure is based on

  • Vision problems are affecting your work or lifestyle.
  • Glare caused by bright lights is a problem.
  • You cannot pass a vision test required for a driver's license.
  • You have double vision.
  • The difference in vision between your two eyes is significant.
  • You have another vision-threatening eye disease.
How Well LASIK Works

How Well It Works

Nd:YAG laser posterior capsulotomy reduces glare and improves vision. It lets light pass through cloudy regions of the lens capsule that may develop after cataract surgery.

Does LASIK have risks

Risks

The most common complication of Nd:YAG laser posterior capsulotomy is short-term increased pressure inside the eye.

  • Other risks include:
  • Detachment of the nerve layer at the back of the eye (retinal detachment).
  • Swelling of the center of the retina (macular edema).
  • Damage or displacement of the intraocular lens.
  • Bleeding into the front of the eye.
  • Swelling of the clear covering of the eye (corneal edema).
Have doubts about LASIK Treatment

What To Think About

It is common to have a new floater in the eye after this Laser.

DIODE LASER

Photocoagulation uses light to coagulate tissue. When energy from a strong light source is absorbed by tissue and is converted into thermal energy, coagulation necrosis occurs with denaturation of cellular proteins as temperature rises above 65 degrees C.

Since the Diabetic Retinopathy Study, technology evolved from using a diffuse Xenon arc to using well-focused laser in photocoagulating retinal tissue in high risk proliferative diabetic retinopathy. Presently, laser retinal photocoagulation is a therapeutic option in several retinal and eye conditions.

Effective retinal photocoagulation depends on how well light penetrates the ocular media on its way to the retinal tissue and how well the light is absorbed by pigment in the target tissue. In retinal tissue, light is absorbed by melanin, xanthophyll or hemoglobin. Melanin absorbs green, yellow, red and infrared wavelengths; xanthophyll (in the macula) absorbs blue but minimally absorbs yellow or red wavelengths; hemoglobin absorbs blue, green and yellow with minimal red wavelength absorption.

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Diode CycloPhotocoagulation

Diode CycloPhotocoagulation (DCP)

Diode CycloPhotocoagulation or DCP, is an exciting development in the management of glaucoma.It is performed on an outpatient basis. In this procedure, the ciliary body of the eye, which creates fluid, is treated with a laser. This reduces fluid production that in turn, reduces intra-ocular pressure. The ciliary body is a small gland running around the circumference of the eye located behind the iris.
It can also be performed on those patients who had SLT or ALT laser procedures, glaucoma filtration surgery or other surgical procedures that were not successful at controlling intra-ocular pressure.
DCP has proven to be an effective way to reduce intra-ocular pressure. Studies have shown that the majority of patients have their glaucoma medications reduced or completely eliminated after the procedure and are no longer at risk of loss of vision from glaucoma.

Realistic expectations

Realistic expectations:

The effect of the surgery may wear off over time, but the majority of patients have their pressure reduced and many can eliminate their need for glaucoma medications