![]() ![]() Closed-angle glaucoma: Occurs when the eye’s drainage angle closes, which results in a rapid increase in intraocular pressure.Īn optometrist can conduct OCT scans in darkened rooms, which allows for quick and accurate results.Open-angle glaucoma: Occurs when the eye’s drainage angle remains open, but fluid doesn’t drain properly, resulting in difficulties maintaining standard intraocular pressure.These images can help determine severity, and distinguish between types of glaucoma, such as: This pressure causes damage to the optic nerve and can result in vision loss.Īn OCT provides your optometrist with detailed, multi-level images of the anterior angle. When the drainage channel is not working correctly, it can lead to an increase in eye pressure. The anterior angle is an essential part of the eyes’ anatomy that operates as the drainage channel for fluid. Patients at risk of developing glaucoma can benefit from an OCT scan, as the images can help evaluate the anterior angle of the eye. Glaucoma: This condition results from a build-up of fluid at the front of your eye, which can result in damage to the optic nerve.Central serous retinopathy: This condition may lead to retinal detachment, which requires emergency care.Age-related macular degeneration (AMD): AMD occurs as the macula slowly deteriorates throughout the ageing process.This condition can result in colours appearing washed out, and blurry vision. Macular edema: When there’s a fluid back-up in your macula, it’s called macular edema.Macular pucker: A macular pucker is a wrinkle in the macula that creates a wavy spot in your central vision.Macular holes: This condition occurs when there’s an opening or tear in the macula, resulting in blurry central vision.Diabetic retinopathy: This condition occurs when blood glucose levels are high for extended periods, causing damage to your eyes’ blood vessels and the retina.OCT is used to diagnose a variety of eye conditions, like: Guided waves of light provide a precise 3D image of the eye’s structure, without making direct contact with the patient’s eyes.īecause OCT relies on waves of light, it is not effective for any condition that affects how light passes through the eye, including cataracts. OCT has been described as a safe, non-invasive ultrasound for your eye, using light instead of sound waves to create a map of the retina and optic nerve. It’s vital to catch eye conditions in the early stages to prevent damage to a patient’s vision.ĭiagnosing vision problems in the early stages can allow your optometrist to provide preventative treatment for conditions including glaucoma, and retinal diseases like age-related macular degeneration (AMD). The clear, 3D images provided by an OCT test can help patients visualize any problems they may be experiencing with their eyesight.Īn OCT scan provides a clear map to help your eye doctor find areas of the eye with abnormalities or early damage. Your eye doctor can use these colour-coded images to scan for irregularities in the optic nerve, and accurately measure the thickness of the retina. An OCT is a non-invasive test that allows your optometrist to take cross-section pictures of your retina using light waves.Īn OCT employs a laser (with no radiation) to obtain high-resolution images of the layers of the eye’s retina and the optic nerve. An Optical Coherence Tomography (OCT) test may sound like a mouthful, but the procedure itself is a little more straightforward. ![]()
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