Introduction to Glaucoma and the Retina Nerve Fiber Layer (RNFL) – Dr. Oli
Introduction to Glaucoma We have spoken about the importance of the way the front of the optic nerve looks like …more >
We look forward to your experiencing Orion Eye world-class care within our new, state-of-the-art, comfortable and convenient walk-in surgery center. Our technology includes:
OCT is a non-invasive technology used for imaging the retina, the multi-layered sensory tissue lining the back of the eye. OCT, the first instrument to allow doctors to see cross-sectional images of the retina, is revolutionizing the early detection and treatment of eye conditions such as wet macular degeneration, macular holes, pre-retinal membranes, macular swelling and even optic nerve damage. It has the capacity to give multiple images of the back of your eye from one location, including topographical map, tissue depth variances, cross-section, and horizontal pictures of the exact point in your eye in the same frame.
A fundus camera or retinal camera is a specialized low power microscope with an attached camera designed to photograph the interior surface of the eye, including the retina, optic disc, macula, and posterior pole (i.e. the fundus). The eye’s fundus is the only part of the human body where the microcirculation can be observed directly. The diameter of the blood vessels around the optic disc is about 150 μm, and an ophthalmoscope allows observation of blood vessels with diameters as small as 10 μm. The Fundus photos are used to diagnose and to monitor the progression of diseases such as macular degeneration, retinal neoplasms, choroid disturbances and diabetic retinopathy, or to identify glaucoma.
A visual field test is a method of measuring an individual’s entire scope of vision, that is their central and peripheral (side) vision. Visual field testing actually maps the visual fields of each eye individually. The visual test assesses the potential presence of blind spot which could indicate eye disease. Many eye and brain disorders can cause a peripheral vision loss. For example, optic new damage caused by glaucoma creates a very specific visual field defect.
The HRT is a laser scanning system for imaging the anterior and posterior segments of the eye. It is an essential tool for predicting, detecting and tracking the progression of glaucoma as well as retina pathologies such as diabetic macular edema.
A cataract is the clouding of the natural human lens. During cataract surgery, Dr. Oli replaces the clouded, blurry area of the lens with an artificial one to correct vision. The human lens is encased by a delicate clear membrane called the “capsule”; the back portion of the capsule is known as the “posterior capsule”. After surgery, many people experience a gradual clouding on the covering of the new lens, a condition known as after-cataract or secondary membrane. Clouding is the most common complication of cataract surgery and can cause blurred vision to return; however, in many patients it never occurs or happens years or months after cataract surgery.
The YAG laser is used to focus a microscopic laser light beam through the transparent cornea onto the cloudy membrane. The laser than creates an opening in the posterior capsule, cloudy membrane. Once the opening is created by the laser, it will remain open and should not need to be repeated. The procedure is painless, and performed on an outpatient basis in both our Redmond and Bend clinics.
In cataract surgery, the natural lens is replaced with an intraocular lens (IOL). IOLs come in different powers and sizes. The IOL Master is a new precision laser system used for measuring the eye prior to cataract surgery. It measures the axial length, surface curvature and the intraocular lens power. Accurate measurements are essential for calculating and selecting the correct IOL.
Ultrasound uses high frequency sound waves to produce images of the internal eye structure. It is a helpful tool if cataract or vitreous clouding prevents a doctor from viewing the structures inside of your eye with traditional methods. A-scan and B-scan are two types of ultrasound tests. A-scan is used to measure the length from the cornea to the retina. B-scan is used to provide cross-sectional two-dimensional images of the inner eye.
Ultrasound is helpful for diagnosing retinal detachment, vitreous bleeding, tumors, inflammation, lesions in the eye socket bone, or foreign bodies in the eye. A-scan measurements are a factor used for selecting an artificial lens implant for cataract surgery. A-scan is also used to identify types of tumors in the eye.
Laser treatment to reduce the intraocular pressure