SE391871B - DEVICE FOR CONTROL OF VISIBILITY - Google Patents
DEVICE FOR CONTROL OF VISIBILITYInfo
- Publication number
- SE391871B SE391871B SE7415598A SE7415598A SE391871B SE 391871 B SE391871 B SE 391871B SE 7415598 A SE7415598 A SE 7415598A SE 7415598 A SE7415598 A SE 7415598A SE 391871 B SE391871 B SE 391871B
- Authority
- SE
- Sweden
- Prior art keywords
- visibility
- control
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
- A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
- A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7415598A SE391871B (en) | 1974-12-12 | 1974-12-12 | DEVICE FOR CONTROL OF VISIBILITY |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7415598A SE391871B (en) | 1974-12-12 | 1974-12-12 | DEVICE FOR CONTROL OF VISIBILITY |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7415598L SE7415598L (en) | 1976-06-14 |
SE391871B true SE391871B (en) | 1977-03-07 |
Family
ID=20322985
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7415598A SE391871B (en) | 1974-12-12 | 1974-12-12 | DEVICE FOR CONTROL OF VISIBILITY |
Country Status (1)
Country | Link |
---|---|
SE (1) | SE391871B (en) |
-
1974
- 1974-12-12 SE SE7415598A patent/SE391871B/en unknown
Also Published As
Publication number | Publication date |
---|---|
SE7415598L (en) | 1976-06-14 |
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