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It is estimated that over two million Americans have some type of glaucoma and half of them do not know it. 90% of glaucoma patients have open-angle glaucoma. Although it cannot be cured, it can usually be controlled. Vision loss may be minimized with early diagnosis and early treatment. The eye receives its nourishment from a clear fluid that circulates inside the eye, called aqueous humor, that is created by the Ciliary body. This fluid must be constantly returned to the bloodstream 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, the 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.
Who is at risk?
Glaucoma can occur in people of all races at any age. However, the likelihood of developing glaucoma increases if you:
Diagnosing 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 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.● We can also use optical coherence tomography (OCT) to diagnose glaucoma since it can document thinning/damage to the RNFL. ● Pachymetry it's used to detect thin corneas which is a risk factor for glaucoma.
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. For Glaucoma medications to be most effective they will need to be consistently taken as directed by your doctor. Poor compliance can lead to further glaucoma damage.
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 and Selective Laser Trabeculoplasty (SLT) 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.
Endoscopic CycloPhotocoagulation (ECP) is another type of laser procedure. Instead of treating the drainage canal, it treats the ciliary body. Treating the ciliary body reduces the amount of fluid production thereby reducing the intra ocular pressure. ECP is most often performed along with cataract surgery but can be done on an outpatient basis when in the best interest of the patient. The majority of patients having ECP reduce or eliminate their need to take glaucoma medications.
Filtration surgery is performed when medicines and/or laser surgery are unsuccessful in controlling eye pressure. During this microscopic procedure, a new drainage channel is created to allow fluid to drain from the eye. iStent, XEN Gel Stent, Ahmed shunt….
Minimally Invasive Glaucoma Surgery (MIGS).
(913)-338-4733 (Phone)(913)-906-6551 (Fax)
Hunkeler Eye Institute, P.A.7950 College Blvd. Suite BOverland Park, KS 66210
Monday- Friday: 8:00AM - 5:00PMSaturday and Sunday: Closed