What is Acne?Written by Lana Hampton
What is acne? Acne is a term attributed to plugged pores, commonly known as blackheads and whiteheads, pimples, and even cysts or nodules, occur on face, neck, chest, back, shoulders and upper arms. Follicles, often called pores, often get blocked with sebum (oil), which normally drains to surface, and a bacteria propionibacterium acnes, begins to grow. Both whiteheads and blackheads start out as a "microcomedone" which then become skin blemishes called comedones. Acne can be upsetting, disfiguring, sometimes leading to permanent scarring. There are different types of acne. A white head is a lesion where trapped sebum and bacteria stay below skin surface. A blackhead, on other hand, is a lesion where trapped sebum and bacteria partially open to surface and turn black due to skin pigment melanin. A papule is a small solid lesion slightly elevated above surface of skin. A pustule, again, is a dome-shaped skin elevation containing pus: a mixture of white blood cells, dead skin cells, and bacteria. It often has a hair in center. A macule is a temporary red spot left by a healed acne lesion. It is flat and pinkish, with well-defined borders that can persist for days to weeks. A number of macules can contribute to "inflamed face" appearance of acne. A nodule is a solid dome-shaped or irregularly shaped lesion, characterized by pain, inflammation and extending into deeper layers of skin. It may cause tissue destruction resulting in scarring.
| | Contact Lenses vs Glasses, What is Best for You?Written by Tanya Turner
Many people wear contact lenses for reasons of convenience and beauty, but they also have practical advantages over glasses. Here are some of them: - Vision becomes more natural and sizes of objects are represented correctly. Glasses distort form and size of an object
- The frame of a pair of glasses limits peripheral vision
- Contact lenses move with your eyes
- Lenses do not mist over in cool or damp weather, they do not freeze in winter, they do not become wet under a rain and snow does not stick to them.
- If powers your eyes require are significantly different, contact lenses can be made in such a way that both eyes will operate in coordination
- Lenses are irreplaceable for people who play sports, dance, or have an active lifestyles.
- Lenses help your children avoid psychological and physical traumas related to wearing glasses.
- Contact lenses can protect cornea during recuperation. Special soft medical lenses are made for this purpose.
See comparison and review of healthy contact lenses Contact lens cons
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