Optos ultra-widefield retinal imaging produces a high-resolution digital image of the back of the eye including, the macula, the optic nerve and the periphery of the eye, in one panoramic image. This image is invaluable in the assessment of the health of the inside of your eye making the diagnosis and documentation of internal pathology very clear. This device captures more than 80% or 200 degrees of the retina in single image without the need for dilating drops. Patients love being able to actually see what we are looking at inside their eyes. This image is taken before your appointment with the doctor.
An optical coherence tomography scan (referred to as an OCT scan) is the latest advancement in imaging technology. It produces a high-resolution image of the layers of the retina or optic nerve which allows us to diagnose and treat conditions accurately. The instrument is essential for early diagnosis of glaucoma, macular degeneration and diabetic retinal disease. OCT images are critically important in the assessment of both wet and dry macular degeneration and in both the detection and treatment of glaucoma.
A visual field test measures the range and sensitivity of your peripheral or ‘side’ vision to assess whether you have any areas of vision loss or areas of reduced sensitivity. In this test, one eye is covered and you look straight ahead while spots of light as presented randomly off to the side. You have to press a button whenever you see the light. The test takes about 15-20 minutes for both eyes. If defects are present, it is the pattern of defects which are critical. This test is used to detect and monitor glaucoma as well as to check for possible neurological visual effects of intracranial disease such as strokes, aneurysms or tumours.
Corneal topography is an imaging technique for mapping the entire curvature of the cornea. This technology allows for precise specialty contact lens fitting and for diagnosing and monitoring irregular corneas, such as keratoconus. Since the cornea is normally responsible for ~70% of the eye’s refractive power, its topography is of critical importance in determining the quality of vision.