An eye patch is a medical device that is used to cover one eye. It is often used to treat various eye conditions, such as lazy eye (amblyopia), double vision (diplopia), and eye injuries.

When an eye patch is used to treat amblyopia, it is typically worn over the “good” eye, forcing the brain to rely on the “lazy” eye. This can help improve the vision in the weaker eye over time.

In cases of double vision, an eye patch can be used to cover one eye, helping to eliminate the overlapping images.

Eye patches are also commonly used to protect the eye after surgery or an injury, and can help relieve pain and promote healing by reducing exposure to light and other irritants.

Eye patches can be made from a variety of materials, including cloth, adhesive tape, and plastic. Some patches are designed to fit over eyeglasses or contact lenses, while others are worn directly on the eye.

It is important to follow your doctor’s instructions when using an eye patch, as prolonged use can lead to discomfort and other complications. It is also important to monitor the eye for signs of infection or other problems while using an eye patch.