Optical Coherence Tomography (OCT)
Anterior Segment Optical Coherence Tomography (OCT)
This is an OCT specifically designed for anterior segment imaging. It is the latest in technology to assess and follow the characteristics in angle anatomy. This helps detects patients who may be at risk of narrow angle-closure glaucoma.
Diabetic Retinopathy or Macular Degeneration Screening using OCT technology
This may allow for early discovery of retinal disease before the physician can detect it. We recommend it for individuals with diabetes and those with a family history of Macular Degeneration.
Glaucoma Screening using OCT technology
This technology provides a cross-sectional image of the optic nerve as well as quantifying the thickness of the nerve tissue; and comparing it to a normative database matched for your age. This test may assist the physician in detecting early signs of Glaucoma.
Fluorescein Angiography is a test that can identify retinal problems of the eye. A special type of camera is used to take pictures of your eye. Dilating drops will be put in your eyes about fifteen minutes before the test is done. The drops will widen your pupils so that the blood vessels in the retina at the back of the eye can be photographed. When your pupils are large, a special dye called Fluorescein is injected into a vein in your hand or arm. As the dye is injected, you may feel warm and slightly nauseated. These feelings usually last only a few seconds.
When you are comfortable, a technician will take several pictures. These pictures will show your doctor the exact location of any problems in your retina. Retinal problems are not uncommon, especially for people with diabetes and older adults. Fluorescein Angiography can help your doctor diagnose and treat many retinal problems. The Fluorescein dye used for the test is very safe. However, it may cause your skin and the white of your eyes to turn yellow for several hours. The yellow colour disappears as your kidneys remove the dye.The dye will be completely removed from your body 48 hours after the test. Drink extra fluids, especially water, for 12 to 24 hours after the test to help remove the dye from your body.
Humphrey Visual Field
This is a visual eye exam that can detect dysfunction in central and peripheral vision which may be caused by conditions such as Glaucoma, Macular Degeneration, and Diabetic Retinopathy.
Ultra-Wide Field Fundus Photography (Optos)
These images are STRONGLY RECOMMENDED by your physician to provide a baseline photograph of your retina and optic nerve. These photos are particularly valuable for long-term follow-up by allowing comparison over time. These photos are not covered by OHIP.
IOL Master 700 & Nidek AL-Scan
This is a laser eye measurement. It is quick and easy with no instruments touching the eye. It is done by the patient focusing on a blinking light. This test generates the most accurate measurements for selecting the correct power of intraocular lens for your eye.
Ultrasound A Scan
This is done using with ultrasound wavelengths. Drops are used to freeze the eyes and a technician will place a probe on your cornea to send soundwaves to measure your eye. This test is covered by OHIP; however, it is not the most accurate measurement available, which is the laser measurement. Even when selecting the medically-necessary intraocular lens implant (covered by OHIP), we still recommend having laser biometry measurements for better accuracy. None the less, with glasses, Ultrasound measurement will provide good vision post surgery.
Ultrasound B Scan
This is a noninvasive diagnostic test commonly used by ophthalmologists for diagnosing numerous orbital diseases. The B-Scan, or brightness scan, can be performed by placing an ultrasound probe directly on the eye, which will be anesthetized, or can also be done over the closed eyelid as well. This scan will result in pictures of any optical lesions, including specifics such as the location, shape, borders and size. The B Scan will provide a cross sectional view of the eye that will give a clear view of the eye structures such as the lens, vitreous, sclera, vitreous and choroid. This type of test is often coupled with an Ultrasound A-Scan as will to help diagnose eye abnormalities and is especially helpful in diagnosing retinal detachments.
This test is done in the same manner as the laser biometry. It provides detailed corneal mapping and assists our surgeon with selecting which intraocular lens implant is best for you. It detects information on astigmatisms which would be missed with conventional testing. This can significantly impact the outcome of your surgery. This test is also highly recommended if selecting a non-OHIP lens implant.
*PLEASE NOTE SOFT CONTACT LENSES SHOULD NOT BE WORN 7 DAYS PRIOR TO ANY MEASUREMENTS FOR CATARACT SURGERY AND HARD/RIGID GAS PERMEABLE CONTACTS SHOULD NOT BE WORN 2-3 WEEKS PRIOR TO ANY MEASUREMENTS FOR CATARACT SURGERY*
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