The present invention describes a measur-ing device that allows for the accurate de-termination of intraocular pressure by attaching a measuring body to the closed eyelid. The measuring principle is based on the subjective intraocular pressure es-timation by the palpating finger and will be implemented in an objective measuring method by the device described herein. The existing development is based on an approximation of the contour of the in-dented eye which flattens the enveloping tissue and simultaneously adapts to the contour of the eyes surface. In the broad-est sense it is as an adaptation of covering eyelid tissue to an expanded surface of the eye. The device basically consists of two pressure units made from silicone, which are independently and resiliently mounted from another. The pressure of the first membrane is applied via a struc-turally designed spring and serves to smooth the upper eyelid and the indirect fixation of the eyeball. The pressure of the second membrane is applied via two springs and is continuously increased to-wards measurement point when no further flattening of the second membrane is visi-ble. Consequently, the pressure character-istics of the eye are transferred from the first membrane to the second membrane. The flattening is monitored by an LED light reflex and the maximum value can thus be easily determined. The present invention is of particular ad-vantage for measurements of intraocular pressure in patients with an injured or dis-eased cornea.
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