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This device is used in ophthalmology for tonometry (measurement of pressure within the eye), and measurement of corneal thickness and anterior chamber depth. The instrument provides a narrow slit of light which is projected into the eye, and reflections from this are detected obliquely with a travelling microscope to measure the position of the reflecting surfaces. It may also be used during contact lens fitting.
Content and Design Copyright 2000 Dr. Malcolm C Brown. See Title Page for more details