Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type
Patent
1985-11-25
1987-01-06
Buczinski, Stephen C.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Subjective type
351224, A61B 302
Patent
active
H00001856
ABSTRACT:
A device for measuring the field of vision for a person wearing a mask indes a mask support to which the mask can be clamped and which is horizontally movable for aligning one of the subject's eyes with a horizontal axis. A scale support carries a scale member that is rotatably mounted around the horizontal axis and which carries a slidable indicator which can be slid to angles from 0.degree. to 90.degree. with respect to the axis. A mirror is attached to the scale support and lies on the axis for aiding and aligning on the subject's eye with the axis. A pointer is connected to a far end of the scale member and is used to locate the vertical perpendicular position of the subject's eye on the horizontal axis. The scale member is rotatably mounted on the scale support about the horizontal axis and the scale support is movable vertically to bring the horizontal axis into alignment with the subject's eye. The scale support can also be moved horizontally in the direction perpendicular to the horizontal movement of the mask support so that the pointer can be brought into its correct position above the subject's eye. With the device correctly oriented with respect to the subject's eye, the scale member can be brought into a plurality of different rotational positions around the horizontal axis and in each position the indicator used to measuring the maximum field of view from 0.degree. to 90.degree. for the subject's eye.
Buczinski Stephen C.
Card, Jr. Harold H.
Costigan Edward F.
Lane Anthony T.
The United States of America as represented by the Secretary of
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