Non-contact tonometer

Details Non-contact tonometer Non-contact tonometer

2003-10-20

2009-06-30

Hindenburg, Max (Department: 3736)

Surgery

Diagnostic testing

Testing aqueous humor pressure or related condition

C600S401000, C600S405000, C600S558000, C351S200000, C351S204000, C351S210000, C351S211000

Reexamination Certificate

active

07553282

ABSTRACT:
A non-contact tonometer changes a reference signal used for determining reliability of a signal indicating deformation of a cornea based on the reflectance of the cornea of an eye to be examined. Thus, the non-contact tonometer can perform stable measurement irrespective of the reflectance of the cornea of the eye to be examined.

REFERENCES:
patent: 4995393 (1991-02-01), Katsuragi et al.
patent: 5465123 (1995-11-01), Iijima
patent: 5469233 (1995-11-01), Katsuragi
patent: 5532769 (1996-07-01), Miwa et al.
patent: 5727551 (1998-03-01), Takagi
patent: 6190317 (2001-02-01), Hayafuji
patent: 6673014 (2004-01-01), Badehi et al.
patent: 2002-172090 (2002-06-01), None
English Language Abstract of JP 2002-172090.
Translation of Chinese Search Report and Office Action dated Jun. 17, 2005 (Computer Generated).
Translation of Japanese Patent Application JP 2002-34927 (Computer Generated).

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