Digital Retinal Imaging – Retinal photography is fast becoming the standard of care in the field of optometry. Retinal photographs, over time, become documents to track changes in the eye and monitor progression of disease because each image provides a solid reference point for future comparison. Since the images are digital, Dr. Chan can apply tools such as enhancing the contrast, or controlling the intensity of the different colours that make up the pictures to sharpen the images. Dr. Chan can zoom in on areas of pathology, as well as more accurately measure areas of disease or structures such as the cup-to-disc ratio (which is crucial in glaucoma screening and monitoring). This helps in the early diagnosis and management of diabetic retinopathy, macular degeneration (the leading cause of irreversible blindness in the developed world), glaucoma, hypertensive retinopathy and other diseases of the retina. At Dr. Mei-Ling Chanʼs Barrie optometric office, we encourage all our patients to take advantage of this technology.
Pachymetry – measures the thickness of the cornea (front layer of the eye). The pressure inside the eyes (intra-ocular pressure) has traditionally been used in glaucoma screening. In 2002, the Ocular Hypertension Study (OHTS) made a critical discovery – thinner corneas have higher risks for glaucoma development. Dr. Mei-Ling Chanʼs optometric office in Barrie uses pachymetry in its glaucoma screening for at risk patients.
Emergency/Specialized Care – In the spring of 2011, Ontario optometrists joined the rest of their colleagues across the country in being able to prescribe therapeutic drugs. Optometrists in Ontario can now treat or initiate treatments for conditions ranging from common pink eyes, and seasonal allergies, to more serious ones like glaucoma and severe inflammation of the eyes. Dr. Chan has made sure she remains up to date when it comes to the treatment and management of ocular diseases.