Worth 4 dot test is a clinical test for suppression of either the right or left eye. Suppression occurs during binocular vision when the brain does not process the information received from either of the eyes. During the worth 4 dot test, the patient, wears anaglyphic glasses. The patient is shown a modified flashlight with four holes, approximately 1cm in diameter, organized in a diamond shape.The holes are arranged with the top hole showing only red light, the left and right showing only green light, and the bottom showing white light.

Wound is a break in the skin. It is usually caused by cuts or scrapes. Different kinds of wounds may be treated differently from one another, depending upon how they happened and how serious they are.

Wound closure system contains skin closure and a transparent dressing. It is useful for post-endoscopic applications and other sites for additional protection against wetting and peeling.