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The Pros & Cons Of Photochromatic Eyeglass Lenses

Posted by on Jun 26, 2015 in Uncategorized | Comments Off on The Pros & Cons Of Photochromatic Eyeglass Lenses

Photochromatic lenses are often advertised as sleek, futuristic devices, but in actual fact they were first developed back in the 1960s. Often sold as ‘transition’ or ‘reactive’ lenses, photochromatic lenses automatically darken in response to sunlight, and lighten in darken conditions. Naturally this a boon for people required to wear prescription glasses. How do photochromatic lenses work? A photochromatic lens may appear to be a simple piece of glass or plastic when not exposed to sunlight. However, embedded within the lenses are millions of microscopic particles. In glass lenses, the particles are typically tiny crystals of silver chloride, while a plastic photochromatic lens contains organic, carbon-based molecules known as oxazines.  When these molecules are exposed to the UV radiation present in sunlight, they grow, darken and clump together, and while they are too small to obscure vision, this reaction...

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Taking the Sweat Out of Hyperhidrosis

Posted by on Jun 2, 2015 in Uncategorized | Comments Off on Taking the Sweat Out of Hyperhidrosis

Excessive sweating, or hyperhidrosis, is a medical condition that is sometimes an indicator of a number of underlying medical problems, and as a result should not be trivialised. Additionally, excessive sweating is a potentially embarrassing condition that can lead to unpleasant odours, difficulty using electronic devises, and a clammy handshake. To be clear, hyperhidrosis is not a condition that is related to profuse sweat caused by exercise; that is just the body’s method of cooling you down as you heat your body through exertion. No, the reason why excessive sweating is a problem is exactly because the body is producing more sweat than is required for cooling your body. Causes Possible causes of excessive sweating are divided into two groups: primary and secondary causes.  Primary causes of hyperhidrosis are, as yet, unknown, as they have no clear linkages to any other,...

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