US3861790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamic visual acuity testing system
Assignee: Individual
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Filing: 1973-02-14
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Granted: 1975-01-21
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Expires: 1993-02-14
Abstract
Abstract Changing visual stimuli are presented on a screen for viewing by a subject to be tested. The visual stimuli are accompanied by audio instructions relative to what is being viewed and what is to be discerned by the subject. The subject''s manually controlled reaction to the changing visual stimuli is physically recorded on a test card in conjunction with a time record and synchronized physical recording of the changing visual stimuli to provide a printed comparison between the actual changing condition of the stimuli and the subject''s interpretation or reaction to the stimuli.
Inventors
- 👤 Raymond M Tamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:31
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/02; A61B5/00; A61B5/16; A61B5/162; A61B5/18; G; G01; G01D; G01D15/00; G01D15/34
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
127 words
Apparatus for visual testing of a subject comprising: visually presented stimuli having a sequentially changing visual angle, means for allowing a viewing of the stimuli by the subject, first recording means for automatically recording the changing of the stimuli, and second recording means manually controlled by the subject for recording the reaction of the subject to the changing of the stimuli, and a time passage indicator common to a record provided by the first recording means and a record provided by the second recording means, said time passage indicator comprising visible indicia divided into equal time intervals, the records provided by said first and second recording means being visible, generally coextensive and positioned generally adjacent, parallel, and along said time passage indicator for a visual comparison therewith.
Claim 2
Dependent Claim
127 words
Apparatus for visual testing of a subject comprising: visually presented stimuli having a sequentially changing visual angle, means for allowing a viewing of the stimuli by the subject, first recording means for automatically recording the changing of the stimuli, and second recording means manually controlled by the subject for recording the reaction of the subject to the changing of the stimuli, and a time passage indicator common to a record provided by the first recording means and a record provided by the second recording means, said time passage indicator comprising visible indicia divided into equal time intervals, the records provided by said first and second recording means being visible, generally coextensive and positioned generally adjacent, parallel, and along said time passage indicator for a visual comparison therewith.
Claim 3
Dependent Claim
28 words
The apparatus of claim 1 including a viewing screen, film projection means directed toward said screen, said stimuli being in the nature of projected pictures on said screen.
Claim 4
Dependent Claim
22 words
The apparatus of claim 2 including audio means associated with the film projection means and in information transmitting contact with the subject.
Claim 5
Dependent Claim
24 words
The apparatus of claim 3 including a variable optical system interposed between the subject and the screen and adjustable for distant or near vision.
Claim 6
Dependent Claim
22 words
The apparatus of claim 1 including audio means associated with the visually presented stimuli and in information transmitting contact with the subject.
Claim 7
Dependent Claim
25 words
The apparatus of claim 1 including a variable optical system interposed between the subject anD the visually presented stimuli adjustable for distant or near vision.
Claim 8
Dependent Claim
32 words
The apparatus of claim 1 wherein said projected pictures sequentially and progressively differ from each other so as to provide, with the subject''s conceptual eye forming the vertex, the changing visual angles.
Claim 9
Dependent Claim
41 words
The apparatus of claim 1 wherein the stimuli are defined by a series of graphic presentations sequentially and progressively differing from each other in size so as to provide, with the subject''s conceptual eye forming the vertex, the changing visual angles.
Claim 10
Dependent Claim
41 words
The apparatus of claim 1 wherein the stimuli are defined by a series of graphic presentations sequentially and progressively differing from each other in angularity so as to provide, with the subject''s conceptual eye forming the vertex, the changing visual angles.
Claim 11
Independent Claim
154 words
A method of determing the ability to detect dynamic visual angular changes in testing for dynamic visual acuity including the steps of placing before the subject stimuli comprising a sequentially changing visual angle defined as the angle subtended by a target with the subject''s conceptural eye forming the vertex of the angle, maintaining an automatic continuing record of the changing visual angles, the subject, through manually controlled means producing a record of his interpretation of the changing visual angles, maintaining a time record coextensive with the record of the changing visual angle and the interpretation thereof and correlating the three records to determine ability to discriminate changes in visual stimuli, the step of placing before the subject stimuli comprising placing before the subject a series of similar graphic presentations sequentially and progressively differing from each other in size so as to provide, with the subject''s conceptual eye forming the vertex, the changing visual angles.
Claim 12
Independent Claim
154 words
A method of determing the ability to detect dynamic visual angular changes in testing for dynamic visual acuity including the steps of placing before the subject stimuli comprising a sequentially changing visual angle defined as the angle subtended by a target with the subject''s conceptural eye forming the vertex of the angle, maintaining an automatic continuing record of the changing visual angles, the subject, through manually controlled means producing a record of his interpretation of the changing visual angles, maintaining a time record coextensive with the record of the changing visual angle and the interpretation thereof and correlating the three records to determine ability to discriminate changes in visual stimuli, the step of placing before the subject stimuli comprising placing before the subject a series of similar graphic presentations sequentially and progressively differing from each other in size so as to provide, with the subject''s conceptual eye forming the vertex, the changing visual angles.
Claim 13
Independent Claim
154 words
A method of determining the ability to detect dynamic visual angular changes in testing for dynamic visual acuity including the steps of placing before the subject stimuli comprising a sequentially changing visual angle defined as the angle subtended by a target with the subject''s conceptual eye forming the vertex of the angle, maintaining an automatic continuing record of the changing visual angles, the subject, through manually controlled means producing a record of his interpretation of the changing visual angles, maintaining a time record coextensive with the record of the changing visual angle and the interpretation thereof and correlating the three records to determine ability to discriminate changes in visual stimuli, the step of placing before the subject stimuli comprising placing before the subject a series of similar graphic presentations sequentially and progressively differing from each other in angularity so as to provide, with the subject''s conceptual eye forming the vertex, the changing visual angles.
Claim 14
Independent Claim
154 words
A method of determining the ability to detect dynamic visual angular changes in testing for dynamic visual acuity including the steps of placing before the subject stimuli comprising a sequentially changing visual angle defined as the angle subtended by a target with the subject''s conceptual eye forming the vertex of the angle, maintaining an automatic continuing record of the changing visual angles, the subject, through manually controlled means producing a record of his interpretation of the changing visual angles, maintaining a time record coextensive with the record of the changing visual angle and the interpretation thereof and correlating the three records to determine ability to discriminate changes in visual stimuli, the step of placing before the subject stimuli comprising placing before the subject a series of similar graphic presentations sequentially and progressively differing from each other in angularity so as to provide, with the subject''s conceptual eye forming the vertex, the changing visual angles.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |