DE150418C - - Google Patents
Info
- Publication number
- DE150418C DE150418C DENDAT150418D DE150418DA DE150418C DE 150418 C DE150418 C DE 150418C DE NDAT150418 D DENDAT150418 D DE NDAT150418D DE 150418D A DE150418D A DE 150418DA DE 150418 C DE150418 C DE 150418C
- Authority
- DE
- Germany
- Prior art keywords
- lens
- lenses
- disks
- disk
- pointer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000004438 eyesight Effects 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 1
- 208000001491 myopia Diseases 0.000 description 3
- 230000004305 hyperopia Effects 0.000 description 2
- 201000006318 hyperopia Diseases 0.000 description 2
- 230000004379 myopia Effects 0.000 description 2
- 206010020675 Hypermetropia Diseases 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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
- 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
- A61B3/0285—Phoropters
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Eye Examination Apparatus (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE150418C true DE150418C (OSRAM) |
Family
ID=417337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT150418D Active DE150418C (OSRAM) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE150418C (OSRAM) |
-
0
- DE DENDAT150418D patent/DE150418C/de active Active
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