FR431638A - Sight testing device - Google Patents

Sight testing device

Info

Publication number
FR431638A
FR431638A FR431638DA FR431638A FR 431638 A FR431638 A FR 431638A FR 431638D A FR431638D A FR 431638DA FR 431638 A FR431638 A FR 431638A
Authority
FR
France
Prior art keywords
testing device
sight testing
sight
testing
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.)
Expired
Application number
Other languages
French (fr)
Inventor
Hugh Milner Black
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of FR431638A publication Critical patent/FR431638A/en
Expired legal-status Critical Current

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
    • A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient

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)
FR431638D 1910-07-06 1911-06-26 Sight testing device Expired FR431638A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB431638X 1910-07-06

Publications (1)

Publication Number Publication Date
FR431638A true FR431638A (en) 1911-11-15

Family

ID=1473786

Family Applications (1)

Application Number Title Priority Date Filing Date
FR431638D Expired FR431638A (en) 1910-07-06 1911-06-26 Sight testing device

Country Status (1)

Country Link
FR (1) FR431638A (en)

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