The auditory phenomenon of a squeaking sound emanating from the eyes upon rubbing is primarily attributable to the interaction of the eyelids and the surface of the eyeball. The tear film, a thin layer of fluid lubricating the eye, can contribute to this sound. This film is composed of water, oils, and mucus, and its consistency can influence the friction generated during eyelid movement.
Understanding the factors contributing to this sound is beneficial for maintaining ocular health. Variations in tear film composition or volume, potentially caused by environmental factors or underlying conditions, can affect the lubrication of the eye. Changes in the tear film may increase friction, leading to discomfort and potentially affecting vision. Historically, observations of ocular sounds have been linked to assessments of overall eye health.