Importance

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Abstract

An apparatus for testing meibomian glands in the eyelids of humans for meibomian gland disease is provided. The apparatus comprises a handle, and a probe tip mounted for movement relative to said handle such that when the probe tip is placed against the eyelid and compressive force is applied, movement of the handle a preselected distance replicates the force required for natural expression of secretion from the meibomian gland. Movement of the handle relative to the probe tip the preselected distance exerts a force of between about 5 grams per 30 mm.sup.2 and 40 grams per 30 mm.sup.2 and preferably a force of approximately 15 grams per 30 mm.sup.2. An indicator means selected from the group consisting of auditory, visual and tactile signals is provided and when activated alerts the clinician that the required force has been reached. According to the method of the present invention a probe tip is located in contacting relation with the eyelid, the probe tip being connected to a handle. When pressure is exerted on the eyelid by pressing it against the eyelid, a preselected pressure is exerted thereon. In another embodiment of the invention, a handle having a probe tip is located on the eyelid, the probe tip is mounted for movement relative to said handle such that when the probe tip is placed against the eyelid and compressive force is applied, movement of the handle a preselected distance replicates the force required for natural expression of secretion from the meibomian gland

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First Claim