As you notice these other lights using your side vision, you will need to press a clicking device to tell the machine that you have seen the light. You will be asked to stare at a light straight ahead of you, while other lights are flashed at you from all sides of the dome, one at a time. Your head will be positioned in a chin rest within the dome. Your non-tested eye will be patched and you will be seated in front of a dome-shaped machine. Generally, the right eye is tested first, and then the left eye. Because your eyes work together and one eye's visual field overlaps partially with the other, you may not be aware of defects unless each eye is tested separately. Visual field testing is a way of identifying whether your peripheral or 'side' vision and central vision have any blind spots or blank areas. If you are scheduled for a visual field test, you will be called in by one of our technicians at the beginning of your appointment for this test.

If you have any questions or concerns about your OCT exam, never hesitate to speak with an eye doctor near you.Īn OCT exam, as it can facilitate early diagnosis and treatment of sight-threatening ocular diseases- preventing vision loss before symptoms begin.Summary of tests and fees Visual field testing - Covered by Manitoba Health If you have been diagnosed with an ocular disease, an OCT scan will also provide the information needed to monitor treatment. Having regular OCT scans will enable your doctor to compare the images from previous years to detect any abnormalities or thickening of retinal layers. If you are over age 25, or at risk of developing ocular disease, your eye doctor may recommend an OCT exam as part of your annual eye exam. As the laser scans the retina in each eye, you may notice a red line moving across your vision. The OCT will scan each of your eyes, while you fix your gaze on a green target. During the test, you will sit with your chin resting on a support. The OCT scan uses light waves to create an image, similar to an ultrasound that uses sound waves to create an image.

SEE RELATED: What Is a Digital Retinal Image? Schedule an appointment with an eye doctor near you, if you suspect you may have glaucoma or any other eye condition that an OCT exam can help detect. The OCT scan can also be performed in a dark room, which facilitates faster and more accurate results- especially when the position of the anterior angle in a darkened room is of utmost importance in the diagnosis of angle-closure glaucoma. The OCT provides cross-sectional images of the anterior angle, and facilitates detection of open-angle or angle closure glaucoma, as well as narrowing of the anterior angle, which can lead to angle-closure glaucoma. If the drainage channel is not working properly, it can lead to an increase in eye pressure, and cause damage to the optic nerve and vision loss. The anterior angle is the drainage channel for fluid inside the eye. The OCT scan is a useful tool in evaluating the anterior angle in patients at risk of developing glaucoma. OCT scans are used for diagnosis, management or treatment of a variety of ocular conditions: The images produced by the OCT scan are also a practical tool in helping patients understand the problem they may be experiencing, as the complication can be seen clearly and in 3D on the screen. The color-coded images provide a wealth of information to help your eye doctor measure the thickness of your retina and identify any optic nerve abnormalities. The OCT scan uses a laser (without radiation) to obtain higher resolution images of the layers of the retina and optic nerve. An optical coherence tomography scan (OCT scan) is a critical device for the early diagnosis of many serious eye conditions.Īn OCT eye exam is a non-invasive test that provides 3-D color-coded, cross sectional images of the retina to enable early detection and treatment of ocular disease that may develop without any noticeable symptoms.

Retina scan cost