Diagnostic apparatus and method to provide effective intraocular pressure based on measured thickness of the cornea

   
   

A method of and apparatus for determining intraocular pressure, automatically corrected for variations in corneal thickness. The apparatus includes an ophthalmic pachymeter having a pachymetric probe, an applanation tonometer having an applanation probe and a microprocessor. As the applanation probe touches the cornea, the ophthalmic pachymeter generates a pachymetric signal indicative of central corneal thickness. This signal is sent to and recorded by the microprocessor. When applanation occurs, the applanation tonometer generates an applanation signal indicative of intraocular pressure. This signal is sent, as well, to the microprocessor. The microprocessor, which has been programmed with an algorithm to correct the applanation signal based on the pachymetric signal, indicates the corrected value for intraocular pressure.

Um método de e um instrumento para determinar a pressão intraocular, corrigido automaticamente para variações na espessura corneal. O instrumento inclui um pachymeter ophthalmic que tem uma ponta de prova pachymetric, um tonometer do applanation que tem uma ponta de prova do applanation e um microprocessador. Porque a ponta de prova do applanation toca no cornea, o pachymeter ophthalmic gera um sinal pachymetric indicativo da espessura corneal central. Este sinal é emitido a e gravado pelo microprocessador. Quando o applanation ocorre, o tonometer do applanation gera um sinal do applanation indicativo da pressão intraocular. Este sinal é emitido, também, ao microprocessador. O microprocessador, que foi programado com um algoritmo para corrigir o sinal do applanation baseou no sinal pachymetric, indica o valor corrigido para a pressão intraocular.

 
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> Intraocular pressure monitoring/measuring apparatus and method

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