Blink is a 1994 neo-noir thriller film starring Madeleine Stowe, and Aidan Quinn. Director Michael Apted was nominated for a Crystal Globe award for the film at the Karlovy Vary International Film Festival, and screenwriter Dana Stevens was nominated for Best Motion Picture at the Edgar Allan Poe Awards. Emmy Award-winning actress Laurie Metcalf also had a role in the film. Chicago rock band The Drovers played a support role as themselves, contributing three songs to the soundtrack. Stowe's character, Emma, is a fiddler in the group. Some scenes were filmed in Chicago, Illinois, USA.

Emma is a young musician who has been blind for 20 years. New surgery techniques restore her vision but initially cause "vision flashes" that leave her uncertain about what she sees. One night, she is awakened by a noise in the apartment above. Peeking out her door, she "sees" a figure descending the stairs. She contacts the police, worried that her neighbor has been murdered, but is unsure if it was just her new vision deceiving her. The killer then begins to stalk Emma.

Blinking is the rapid closing and opening of the eyelid. It is an essential function of the eye that helps spread tears across and remove irritants from the surface of the cornea and conjunctiva. Blink speed can be affected by elements such as fatigue, eye injury, medication, and disease. The blinking rate is determined by the "blinking center", but it can also be affected by external stimulus. When an animal (usually human) chooses to blink only one eye as a signal to another in a social setting (a form of body language), it is known as winking. Some animals (for example, tortoises and hamsters) blink their eyes independently of each other.

Blinking provides moisture to the eye by irrigation using tears and a lubricant the eyes secrete. The eyelid provides suction across the eye from the tear duct to the entire eyeball to keep it from drying out.

Blinking also protects the eye from irritants. Eyelashes are hairs attached to the upper and lower eyelids that create a line of defense against dust and other elements to the eye. The eyelashes catch most of these irritants before they reach the eyeball.

A film, also called a movie or motion picture, is a series of still or moving images. It is produced by recording photographic images with cameras, or by creating images using animation techniques or visual effects. The process of filmmaking has developed into an art form and industry.

Films are cultural artifacts created by specific cultures, which reflect those cultures, and, in turn, affect them. Film is considered to be an important art form, a source of popular entertainment and a powerful method for educating – or indoctrinating – citizens. The visual elements of cinema give motion pictures a universal power of communication. Some films have become popular worldwide attractions by using dubbing or subtitles that translate the dialogue into the language of the viewer.

Films are made up of a series of individual images called frames. When these images are shown rapidly in succession, a viewer has the illusion that motion is occurring. The viewer cannot see the flickering between frames due to an effect known as persistence of vision, whereby the eye retains a visual image for a fraction of a second after the source has been removed. Viewers perceive motion due to a psychological effect called beta movement.