Eye Care Services

Glaucoma

Glaucoma Consultation and Evaluation

Glaucoma occurs when the pressure inside the eye rises high enough to damage the optic nerve and cause permanent vision loss. Early diagnosis of glaucoma not only involves checking eye pressures, but also requires careful examination of the optic nerves. Treatment is administered to lower pressure in the eye and prevent vision loss.

Glaucoma Surgery | Glaucoma Laser Treatment | Ventura | Oxnard | Camarillo Glaucoma is the leading cause of blindness and visual impairment in the US, and can affect patients of all ages, many of whom do not experience any symptoms and may not be aware that they have the disease. Glaucoma actually refers to a group of diseases that cause damage to the optic nerve as a result of increased pressure within the eye, but can also be caused by a severe eye infection, injury, blocked blood vessels or inflammatory conditions of the eye.

There are two main types of glaucoma, open-angle and angle-closure. Open-angle glaucoma is the most common type of glaucoma and involves fluid in the eye not draining properly through the trabecular meshwork. Angle-closure glaucoma involves a sudden buildup of pressure in the eye and poor drainage because the angle between the iris and the cornea is too narrow.

Many patients do not experience any symptoms during the early stages of glaucoma, including no pain and no vision loss. This makes it difficult for many patients to know if they have the disease. But as glaucoma progresses, patients may experience a loss of peripheral or side vision, along with sudden eye pain, headache, blurred vision or the appearance of halos around lights.

Glaucoma Surgery | Glaucoma Laser Treatment | Ventura | Oxnard | Camarillo While some patients may experience symptoms from glaucoma as the disease progresses, others do not learn they have the condition until they undergo a routine eye exam. There are several different exams performed to diagnose glaucoma, including a visual field and visual acuity test. These tests measure peripheral vision and how well patients can see at various distances. Other tests may also be performed, such as tonometry to measure the pressure inside the eye and pachymetry to measure the thickness of the cornea.

While there are no surefire ways to prevent glaucoma from developing, regular screenings and early detection are the best forms of protection against the harmful damage that the disease can cause. While anyone can develop glaucoma, some people are at a higher risk for developing disease. These people may include those who:

Are over the age of 60
African Americans over the age of 40
Have a family history of glaucoma
Have poor vision
Have diabetes

Patients should have a comprehensive dilated eye exam at least once every two years, especially if they have a higher risk of developing glaucoma. Older patients may be encouraged to be tested more frequently.

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Glaucoma Surgery

When eye drops do not adequately lower eye pressure enough to control a patient's glaucoma, laser surgery or other glaucoma surgery may be recommended. Patients with a special condition called narrow angles can have angle closure glaucoma attacks, which can be prevented or treated with laser surgery to the iris.

Common surgeries include:

Laser Peripheral Iridotomy (LPI) – For patients with narrow-angle glaucoma. A small hole is made in the iris to increase the angle between the iris and cornea and encourage fluid drainage.
Argon Laser Trabeculoplasty (ALT) and Selective Laser Trabeculoplasty (SLT) – For patients with primary open angle glaucoma (POAG). The trabecular passages are opened to increase fluid drainage. ALT is effective in about 75% of patients, and SLT may be repeated.
Nd: YAG Laser Cyclophotocoagulation (YAG CP) – For patients with severe glaucoma damage who have not been helped with other surgeries. The ciliary body that produces intraocular fluid is destroyed.
Filtering Microsurgery (Trabeculectomy) – For patients who have not been helped with laser surgery or medications. A new drainage passage is created by cutting a small hole in the sclera (the white part of the eye) and creating a collection pouch between the sclera and conjunctiva (the outer covering of the eye).
Tube Shunt Surgery – May be recommended for patients with neovascular glaucoma, failed trabeculectomy, or susceptibility to developing scar tissue. A thin, flexible tube (a shunt) with a silicone pouch is inserted in the eye to facilitate drainage.

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Glaucoma Laser Treatment

Glaucoma Surgery | Glaucoma Laser Treatment | Ventura | Oxnard | Camarillo Glaucoma laser surgery is performed to lower intraocular pressure by increasing the drainage of aqueous fluid or reducing the amount produced. The type of laser surgery used depends on the type of glaucoma that the patient has. The length of time that the pressure remains lowered depends upon factors including the type of glaucoma, the type of laser surgery, and the patient's symptoms.

Once glaucoma has been diagnosed, treatment should begin as soon as possible to help minimize the risk of permanent vision loss. There is no cure for glaucoma, so treatment focuses on relieving symptoms and preventing further damage from occurring. Most cases of glaucoma can be treated with eye drops, laser or microsurgery. The best treatment for your individual case depends on the type and severity of the disease, and can be discussed with your doctor.

Eye drops are used to reduce fluid production in the front of the eye or to help drain excess fluid, but can lead to redness, stinging, irritation or blurry vision. Patients should tell their doctor about any allergies they have to minimize the risk of side effects.
Laser surgery for glaucoma aims to increase the outflow of fluid from the eye or eliminate fluid blockages through laser trabeculoplasty, iridotomy or cyclophotocoagulation.
Microsurgery involves a surgical procedure called a trabeculectomy, which creates a new channel to drain fluid from the eye and reduce the pressure that causes glaucoma. Surgery is often performed after medication and laser procedures have failed.

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