Open-Angle Glaucoma

It is estimated that over two million Americans have some type of glaucoma and half of them do not know it. Ninety percent of glaucoma patients have open-angle glaucoma. Although it cannot be cured, it can usually be controlled. Vision loss may be minimized with early treatment.

The eye receives its nourishment from a clear fluid that circulates inside the eye. This fluid must be constantly returned to the blood stream through the eye’s drainage canal, called the trabecular meshwork. In the case of open-angle glaucoma, something has gone wrong with the drainage canal. When the fluid cannot drain fast enough, pressure inside the eye begins to build.

This excess fluid pressure pushes against the delicate optic nerve that connects the eye to the brain. If the pressure remains too high for too long, irreversible vision loss can occur.

Symptoms of open-angle glaucoma:

  • In the early stages, there are no symptoms. There is no pain or outward sign of trouble.
  • Mild aching in the eyes
  • Gradual loss of peripheral vision (the top, sides and bottom areas of vision)
  • Seeing halos around lights
  • Reduced visual acuity (especially at night, that is not correctable with glasses)

Who is at risk

Glaucoma can occur in people of all races at any age. However, the likelihood of developing glaucoma increases if you:

  • are African American
  • have a relative with glaucoma
  • are diabetic
  • are very nearsighted
  • are over 35 years of age

Diagnosing Open-Angle Glaucoma:

Everyone should be checked for glaucoma at around age 35 and again at age 40. Those considered to be at higher risk, including those over the age of 60 should have their pressure checked every year or two.

Your Vold Vision doctor will use tonometry to check your eye pressure. After applying numbing drops, the tonometer is gently pressed against the eye and its resistance is measured and recorded.

An ophthalmoscope can be used to examine the shape and color of your optic nerve. The ophthalmoscope magnifies and lights up the inside of the eye. If the optic nerve appears to be cupped or is not a healthy pink color, additional tests will be run.

Perimetry is a test that maps the field of vision. Looking straight ahead into a white, bowl-shaped area, you’ll indicate when you’re able to detect lights as they are brought into your field of vision. This map allows your doctor to see any pattern of visual changes caused by the early stages of glaucoma.

Gonioscopy is used to check whether the angle where the iris meets the cornea is open or closed. This helps your doctor determine if they are dealing with open-angle glaucoma or narrow-angle glaucoma.

Treatments for Open-Angle Glaucoma:

To control glaucoma, Dr. Vold will use one of three basic types of treatment: medicines, laser surgery, or filtration surgery. The goal of treatment is to lower the pressure in the eye.

Medicines come in pill and eye drop form. They work by either slowing the production of fluid within the eye or by improving the flow through the drainage meshwork. To be effective, most glaucoma medications must be taken between one to four times every day, without fail. Some of these medications have some undesirable side effects, so your doctor will work with you to find a medication that controls your pressure with the least amount of side effects. Medicines should never be stopped without consulting your doctor, and you should notify all of your other doctors about the medications you are taking.

Argon Laser Trabeculoplasty or Selective Laser Trabeculoplasty surgery treat the drainage canal. Requiring only numbing eye drops, the laser beam is applied to the trabecular meshwork resulting in an improved rate of drainage. When laser surgery is successful, it may reduce the need for daily medications.

Filtration surgery and Micro-Invasive Glaucoma Surgery are performed when medicines and/or laser surgery are unsuccessful in controlling eye pressure .Over the course of the past few years, Dr. Vold is one of only a select few surgeons in the country to perform a wide array of new innovative glaucoma procedures including filtration surgery using the Ex-PRESS glaucoma filtration device or Ahmed M4 tube shunt, Trabectome surgery, canaloplasty, Transcend Medical’s CyPass micro-stent, Glaukos iStent, Ivantis Hydrus, AqueSys XEN implant and SOLX gold shunt procedures. In fact, Dr. Vold was handpicked as the first surgeon in the United States to perform many of these procedures. He trains doctors all over the world in the area of micro-invasive procedures, and has helped develop the Transcend Vold Goniolens to assist surgeons globally in the performance of these groundbreaking procedures. All of these devices and procedures are now approved in Europe with several procedures now available in the United States. His primary goal is to bring these innovative technologies to his patients to hopefully improve upon the clinical outcomes generally achieved with standard filtration and tube shunt surgery.