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As Canadians prepare for Halloween, the Canadian Ophthalmological Society (COS), the Canadian Association of Optometrists (CAO) and the Opticians Association of Canada (OAC) are reminding the public that cosmetic contact lenses can pose serious risks to eye health, even when worn for a single occasion. Cosmetic contact lenses, also called decorative, coloured or costume lenses, change the appearance of the eyes without correcting vision. Like corrective contact lenses, they sit directly on the eye and require professional guidance on fit, use and care. Improperly fitted or handled lenses can cause scratches to the cornea, allergic reactions and infections, with complications that may threaten vision.

For tens of millions of people, dental implants have provided a way to replace missing teeth with a full set of fixed, functional teeth rather than removable dentures. However, an estimated 10% to 20% of implant patients eventually develop peri-implantitis, a serious infection that damages the surrounding jawbone. Antibiotics frequently fail to control this condition, and scientists have struggled to understand why. Now, researchers believe they have uncovered the mechanism responsible.

The findings challenge the assumption that all major reproductive hormonal transitions affect brain structure in similar ways. Continue reading Menopause may change the brain in ways puberty and pregnancy don’t on Tech Explorist .