![]() Two variants of this disease exist, Dry and Wet AMD.ĭry AMD occurs when the macula becomes thinner with age, causing the gradual loss of your central vision. AMD affects your ability to see fine details and is a leading cause of vision loss in people over 50 years old. Several eye diseases can affect the retina, optic nerve, and blood vessels that OCT can help diagnose, such as:Īge-related macular degeneration (AMD) causes central vision loss while your peripheral vision is unaffected. Early detection is important for eye diseases like glaucoma, which may not present any symptoms until vision loss occurs. Your optometrist may use OCT during your comprehensive eye exam or if you’re at risk of eye disease due to conditions like diabetes. After reviewing the OCT results, your optometrist can diagnose any eye conditions and recommend a treatment plan for you. The machine then scans your eyes for around 5 to 10 minutes to create a detailed profile. When your eye doctor plans to use OCT during your exam, what should you expect? What to expect with OCTīefore your exam begins, your optometrist may administer dilating eye drops for an easier examination. With OCT, your optometrist doesn’t need to guess if there is retinal swelling they can look at the detailed information the images provide. The images help with diagnosis and treatment planning for different eye conditions and tracking the retina’s healing process. With the constructed profile, your optometrist can measure your retina’s thickness and see its different layers. These light waves reflect off of different depths within the eye to reconstruct a profile, while a laterally scanning light beam creates a 3D image of the eye. OCT is similar to an ultrasound, using light waves instead of sound waves. If your optometrist uses OCT in your eye exam, how does it work, and what should you expect to happen? How Does OCT Work? OCT is an effective assessment tool for several reasons: It can effectively view and capture images of the retina with detail and accuracy. OCT is similar to an ultrasound, but it uses light instead of sound. These help your optometrist identify and diagnose eye diseases. A noninvasive laser obtains images of the layers of the retina and optic nerve. OCT is an imaging tool for capturing high-resolution, cross-sectional images of the back of your eye. What is OCT, and what is it used for? Before your next eye exam, learn more about optical coherence tomography. Several tools help your optometrist to examine your eyes, including optical coherence tomography (or OCT). Examining your eye health can help identify any potential problems. They’ll assess your overall eye health to check for eye diseases. Monitor moles or ‘naevi’ in the retina (like moles on the skin, these are surprisingly common and can occasionally become malignant so should be closely monitored)įind small holes and distortions in the macula (the centre of the retina) which can help explain blurred vision and can often be treated.ĭetect fluid under the retina in diabetes and other vascular diseaseĭifferentiate between retinal detachment and posterior vitreous detachment.During an eye exam, your optometrist doesn’t only test your vision. Screen for early stage macula degeneration before it becomes visible on the surface See very early changes in the retinal nerves, leading to very early detection and prevention of glaucoma Some of the things it will allow us to do: Optometrists are highly trained in detecting eye disease as well as a number of general health problems the OCT will allow us to screen for changes and detect them much earlier than usual. We can also use it to get a 3D image of the structures at the front of the eye, for example to measure the thickness of your cornea.īeing able to see ‘through’ the retina means we can pick up changes in your eyes that wouldn’t normally be seen during a routine eye examination. With the new 3D scan we still have the photograph but now we also have a three dimensional cross section of the back of your eye. ![]() For a number of years we have been able to photograph the back of your eye making the record of your ocular health much more accurate. ![]()
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