US PATENT SUBCLASS 600 / 558
.~ Eye or testing by visual stimulus


Current as of: June, 1999
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600 /   HD   SURGERY

300  DF  DIAGNOSTIC TESTING {38}
558.~ Eye or testing by visual stimulus


DEFINITION

Classification: 600/558

Eye or testing by visual stimulus:

(under subclass 300) Subject matter for evaluating a physical characteristic of the visual system or testing a reaction to visual stimulus.

SEE OR SEARCH THIS CLASS, SUBCLASS:

398, for apparatus for determining pressure in an eyeball.

544+, for apparatus which detects an electric signal of the brain resulting from visual stimulus.

SEE OR SEARCH CLASS

351, Optics: Eye Examining, Vision Testing and Correcting,

6+, for ophthalmoscopes and retinoscopes.