Evidence-based decision-making can be thought of as a process in which clinical decisions are made in light of the best research evidence, the practitioner’s existing expertise and knowledge, and the patient’s needs and preferences within the context of the clinic environment.i Evidence- based decision-making is an important element of quality care in a wide range of health services and is integral to effect changes across the health care system.
Canadians cannot tell how much UV protection a pair of sunglasses will provide by their price, colour, or by the darkness of the lenses. Consumers should look for labels that list the type and amount of protection. General purpose sunglasses block from 60 to 92 percent of visible light and UVA rays, and between 95 and 99 percent of UVB rays. These sunglasses are good for driving, and are recommended whenever sunlight is harsh enough to cause squinting. Other types of sunglasses, including cosmetic tint and special purpose, are not recommended for driving.
Comprehensive eye examinations conducted by optometrists are designed to assess the function of the visual system, the refractive or optical status of the eye, and the health of the eyes and visual neurological pathways. Many ocular disease conditions are not accompanied by obvious symptoms, especially in early stages when interventions are most successful. Comprehensive eye exams also review focusing and eye teaming ability, and recommend precise refractive corrections. In addition, systemic disease (such as diabetes and high blood pressure) may present with ocular signs that are detectable in a comprehensive eye exam, facilitating early diagnosis and better management of the condition.
The legibility of medication labelling is a concern for all Canadians. Labels must be easy to read to help ensure patients take their medications appropriately and avoid medication errors. Older adults are more likely to be affected, as many have visual function decrease and higher rates of medication use.
Doctors of Optometry have offices in most cities and communities across Canada. Having a local optometrist as a primary eye care provider gives patients the best access to comprehensive eye care services and continuity of care. In some instances however, geographical location, poor mobility, or other restrictions may prevent patients from having an in-office eye exam. Mobile eye care services can be valuable in these circumstances to provide access to comprehensive eye care for all Canadians. The standard for mobile eye care is the responsibility of provincial optometric colleges.
Non-corrective cosmetic contact lenses are used to change the colour or appearance of the eyes. Like contact lenses used for visual correction, cosmetic contact lenses can pose a risk of harm due to improper fit, use, or care. Complications such as corneal abrasions, inflammatory reactions, and potentially serious corneal infiltrations or infections can occur (sterile or infectious infiltrative keratitis). Some of these complications can be visually threatening.
Updated August 2017
Updated August 2017
Laser pointers are small, hand-held devices whose pointer emits a light at a wavelength of 670nm to produce a narrow beam of red laser light which can be directed over long distances. While originally designed as educational and business tools, laser pointers are now marketed as toys which increases the risk of safety incidents.