list of symbols used on the package/label and their explanation

list of symbols used on the package/label and their explanation

complications that may arise following surgery

Intracorneal Ring Implants (INTACS) are a vision correction option to treat low to moderate levels of myopia. INTACS are used to correct myopia in patients who have keratoconus and those who have residual myopia following laser refractive or LASIK surgery.

An intraocular lens (IOL) is an implanted lens in the eye, usually replacing the existing crystalline lens because it has been clouded over by a cataract, or as a form of refractive surgery to change the eye's optical power. It usually consists of a small plastic lens with plastic side struts, called haptics, to hold the lens in place within the capsular bag inside the eye.[citation needed] IOLs were traditionally made of an inflexible material (PMMA), although this has largely been superseded by the use of flexible materials. Most IOLs fitted today are fixed monofocal lenses matched to distance vision. However, other types are available, such as multifocal IOLs which provide the patient with multiple-focused vision at far and reading distance, and adaptive IOLs which provide the patient with limited visual accommodation.

In medicine, an indication is a valid reason to use a certain test, medication, procedure, or surgery. The opposite of indication is contraindication.

A contraindication (pronounced as contra-indication) is a condition or factor that speaks against a certain measure. It is mostly used in medicine, with regard to factors that increase the risks involved in using a particular drug, carrying out a medical procedure, or engaging in a particular activity. Some contraindications are absolute, meaning that there are no reasonable circumstances for undertaking a course of action. For example, a baby with a fever should never be given aspirin because of the risk of Reye's syndrome, and a person with an anaphylactic food allergy should never eat the food to which they are allergic. Similarly, a person with hemochromatosis should not be administered iron preparations. Other contraindications are relative, meaning that the patient is at higher risk of complications, but that these risks may be outweighed by other considerations or mitigated by other measures. For example, a pregnant woman should normally avoid getting X-rays, but the risk may be far less than the risk of not diagnosing or being able to treat a serious condition such as tuberculosis or a broken bone. Relative contraindications may also be referred to as cautions, such as in the British National Formulary.

Complication, in medicine, is an unfavorable evolution of a disease, a health condition or a medical treatment. The disease can become worse in its severity or show a higher number of signs, symptoms or new pathological changes, become widespread throughout the body or affect other organ systems. A medical treatment, such as drugs or surgery may produce adverse effects and/or produce new health problem(s) by itself. A new disease may also appear as a complication to a previous existing disease. Therefore, a complication may be iatrogenic, i.e., literally brought forth by the physician. Medical knowledge about a disease, procedure or treatment usually entails a list of the most common complications, so that they can be foreseen, prevented or recognized more easily and speedily. Depending on the degree of vulnerability, susceptibility, age, health status, immune system condition, etc. complications may arise more easily. Complications affect adversely the prognosis of a disease. Non-invasive and minimally invasive medical procedures usually favor fewer complications in comparison to invasive ones. Examples of complications * Generalized septicemia (infection of the blood) may occur as a complication of an infected wound or abscess * Allergic shock can be a reaction to several kinds of anesthetics, as a complication in a surgery * Fractured ribs and sternum may be a complication of cardiopulmonary resuscitation attempts in people suffering severe osteoporosis * Puerperal fever may be a common complication of childbirth and used to kill a large proportion of mothers before the advent of antisepsis and antibiotics * Diabetes mellitus may present a series of complications in an advanced or more severe stage, such as gangrene, diabetic foot, blindness, infections, etc. * Thrombosis in the heart or brain, causing stroke or acute myocardial infarction can be complications of blood coagulation disorders, phlebitis (inflammation of the veins), endocarditis and artificial heart valves * Eczema vaccinatum is a rare and severe complication of smallpox vaccination in people with eczema * Hepatotoxic dementia is a possible complication of hepatitis and liver cirrhosis * Mental retardation is a common complication of untreated hydrocephalus * A paradoxical reaction to a drug; that is, a reaction that is the opposite to the intended purpose of the drug. An example is benzodiazepines, a class of psychoactive drugs considered minor tranquilizers with varying hypnotic, sedative, anxiolytic, anticonvulsant, and muscle relaxant effects; paradoxically they may also create hyperactivity, anxiety, convulsions etc. in susceptible individuals. [1] * Erectile dysfunction and urinary incontinence are prevalent to prostatectomy.

intraoperative complications, are complications, problems within operation, intraoperative problems.