Noncontact type tonometer

Details Noncontact type tonometer Noncontact type tonometer

1987-08-19

1989-10-10

Wayner, William E.

Surgery

Truss

Pad

307141, A61B 316

Patent

active

048724602

ABSTRACT:
A noncontact type tonometer includes a fluid discharging device for discharging a fluid towards the cornea of an eye to be tested; an alignment detecting device for detecting an alignment between the axis of a fluid discharge of the fluid discharging device and the vertex of the cornea and for outputting an alignment signal; and a controlling device for determining whether or not the alignment has been completed upon receipt of the alignment signal from the alignment detecting device and outputting an alignment completion signal when the alignment has been completed. A fluid discharge of the fluid discharging device is automatically performed based on the alignment completion signal. The controlling device is provided with a monitoring device for monitoring the establishment of the alignment completion state for a predetermined time based on the alignment completion signal and outputting an action command signal for automatically performing the fluid discharge towards the fluid discharging device only when the alignment completion state has been maintained for the predetermined time.

REFERENCES:
patent: 3538754 (1970-11-01), Grolman et al.
patent: 3756073 (1973-09-01), Lavallee et al.
patent: 3818241 (1974-06-01), Ishizaka et al.
patent: 4665923 (1987-05-01), Kobayashi
patent: 4724843 (1988-02-01), Fisher

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