Breast implant surgery using silicone gel-filled implants is an elective surgical operation. Unlike an appendectomy or other medically necessary procedures, cosmetic breast augmentation is a lifestyle procedure intended to improve appearance. However, reconstructive breast implant surgery is important because it helps those with congenital breast asymmetry or patients who have had breast surgery for cancer or other abnormalities. Alternative treatments to implant surgery include using external breast prostheses or padding, saline-filled implants or transferring tissue from other areas of the body to enlarge or rebuild the breasts. Associated risks and potential complications depend on the form of treatment.

Institute on Alcohol Abuse and Alcoholism

National Institute on Alcohol Abuse and Alcoholism provides leadership in a national effort to reduce problems related to alcohol. The National Institute on Alcohol Abuse and Alcoholism conducts research in a range of scientific areas, including genetics, neuroscience, epidemiology, and studies the health risks and benefits of alcohol consumption, prevention and treatment. The National Institute on Alcohol Abuse and Alcoholism coordinates and collaborates with other research institutes and Federal programs on issues related to alcohol. The National Institute on Alcohol Abuse and Alcoholism collaborates with international, national, state and local institutions, organizations, agencies and programs to translate and disseminate research findings to health care providers, researchers, policymakers and the public.

Ophthalmology

Ophthalmology is the branch of medicine, which deals with the anatomy, physiology and diseases of the eye. The term ophthalmologist refers to a specialist in medical and surgical eye problems. Since ophthalmologists perform operations on eyes, they are both surgical and medical specialists. The eye is a fragile organ, requiring extreme care before, during, and after a surgical procedure. An expert eye surgeon must identify the need for specific procedure and be responsible for conducting the procedure safely. Anesthesia is essential for any eye surgery. Local anesthesia is most commonly used. Retrobulbar and peribulbar techniques for infiltrating the local area surrounding the eye muscle cone are to immobilize the extraocular muscles and eliminate pain sensation. Topical anesthesia using lidocaine topical gel is preferred for quick procedures. In topical anesthesia, patient cooperation is a must for a smooth procedure. General anesthesia is for children, traumatic eye injuries, major orbitotomies, and for apprehensive patients. Cardiovascular monitoring is preferable in local anesthesia and is mandatory in general anesthesia. Proper sterile precautions are used to prepare the area for surgery, including use of antiseptics like povidone-iodine. Sterile drapes, gowns and gloves are necessary. A plastic sheet with a receptacle helps collect the fluids during phacoemulsification. An eye speculum is used to keep the eyes wide open. Although the terms laser eye surgery and refractive surgery are used as if they were interchangeable, this is not the case. Lasers may be used to treat nonrefractive conditions, while radial keratotomy is an example of refractive surgery without the use of a laser. A cataract is an opacification or cloudiness of the eye's crystalline lens due to aging, disease, or trauma that typically prevents light from forming a clear image on the retina. If visual loss is significant, surgical removal of the lens with lost optical power is performed and it is usually replaced with a plastic intraocular lens. Due to the high prevalence of cataracts, cataract extraction is the most common eye surgery. Rest after surgery is necessary. LASIK is Laser-Assisted In Situ Keratomileusis. LASIK is a type of refractive surgery, performed by ophthalmologists using a laser. The operation is with the patient awake and mobile; however, the patient is sometimes given a mild sedative (such as Valium) and anesthetic eye drops. LASIK is in three steps. The first step is to create a flap of corneal tissue. The second step is remodeling of the cornea underneath the flap with the laser. Finally, the flap is repositioned.