Covers open surgery to release pressure on the median nerve to relieve carpal tunnel syndrome symptoms in your hand. Looks at how the surgery is done, how well it works, and what to expect after surgery. Includes info on risks.

Discusses surgery that involves an incision to repair hernias in the groin. Covers why surgery is done and how well it works. Covers risks. Covers things to think about when having hernia repair surgery (herniorrhaphy).

Courtesy of Drew Taylor, Director of Advanced Open Imaging, Meridian, Idaho. Magnetic resonance imaging (MRI) is a test that uses a magnetic field and pulses of radio wave energy to make pictures of organs and structures that are inside the body. During the MRI test (also called an MRI scan), you usually lie on your...

Open-angle glaucoma is the most common type of glaucoma, in which slow damage to the optic nerve in the back of the eye causes gradual loss of vision. The cause is not well understood but in some cases may be increased pressure in the eye (intraocular pressure) that results from the buildup of fluid inside the eye...

Open-joint arthroplasty is surgery to repair, reposition, replace, or remove parts in a joint. When used to treat temporomandibular disorder (TMD), this usually involves the articular disc that cushions the jaw joint. During open-joint arthroplasty of the jaw, an incision is made in the skin to expose the jaw joint. The...

Ophthalmologists are medical doctors who specialize in the diagnosis and treatment of eye problems, diseases, and injuries. Ophthalmologists can diagnose and treat eye diseases, such as diabetic retinopathy and glaucoma; prescribe eyeglasses and contact lenses; treat eye injuries; and perform eye surgeries, such as...

Opicapone is used together with carbidopa and levodopa to treat symptoms of "off" episodes (stiffness, tremors, muscle spasms, poor muscle control) in people with Parkinson's disease. . Opicapone may also be used for purposes not listed in this medication guide.

An opioid is a drug that can suppress the perception of pain and calm a person's emotional response to pain. It does this by reducing the effect of pain signals sent by the nervous system. Opioids produce a feeling of well-being (euphoria). They also cause mood changes, cloudy thinking, and deep sleep. Side effects of...

Make sure you know about each of the medicines you take. This includes why you take it, how to take it, what you can expect while you're taking it, and any warnings about the medicine. The information provided here is general. So be sure to read the information that came with your medicine. If you have any questions or...

Here's information to help you work with your doctor so you can take prescribed opioids safely.

Opium preparation (sometimes called "opium tincture") is an opioid medication that is used to treat diarrhea. This medicine is not for use as an opioid pain medicine. Opium preparation may also be used for purposes not listed in this medication guide.

Opportunistic infections and diseases occur in people whose immune systems have been weakened by a disease such as HIV infection. Opportunistic infections that are common in people who have AIDS include pneumonia, tuberculosis, and toxoplasmosis. People who have AIDS are also more likely to develop cancers such as...

The optic nerve is the nerve at the back of the eye that carries visual information from the eye to the brain.

Optic neuritis is inflammation of the optic nerve, which lies at the back of the eye and carries visual information from the eye to the brain. Optic neuritis may cause partial or total loss of vision, usually in one eye, and is often associated with pain when the eye moves. When optic neuritis causes partial vision...