In chemistry, a reaction mechanism is the step by step sequence of elementary reactions by which overall chemical change occurs. A chemical mechanism describes in detail exactly what takes place at each stage of an overall chemical reaction (transformation). It also describes each reactive intermediate, activated complex, and transition state, and which bonds are broken (and in what order), and which bonds are formed (and in what order).
Grade IV capsular contracture in the right breast of a 29 y.o. woman, seven years after subglandular placement of 560cc silicone gel-filled breast implants. Capsular contracture is a response of the immune system to foreign materials in the human body. Medically, it occurs mostly in context of the complications from breast implants and artificial joint prosthetics.
Capsular thickening. The capsule is the outer bag of the natural lens that is left behind during surgery to hold the artificial lens or implant. Over time, in some patients, this outer shell becomes cloudy, a condition known as capsular thickening or secondary cataract.The patient will notice vision becoming blurred â just like it did with the original cataract.apsular opacification (secondary cataract) is treated using a YAG laser and this is a brief and painless out-patient procedure. The pupil will be dilated at the time and the laser makes a new clear pathway in the area of the pupil, allowing light to reach the back of the eye.