GB304010A - Eye testing devices - Google Patents

Eye testing devices

Info

Publication number
GB304010A
GB304010A GB3538227A GB3538227A GB304010A GB 304010 A GB304010 A GB 304010A GB 3538227 A GB3538227 A GB 3538227A GB 3538227 A GB3538227 A GB 3538227A GB 304010 A GB304010 A GB 304010A
Authority
GB
United Kingdom
Prior art keywords
testing devices
eye
eye testing
bar
chart member
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
GB3538227A
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.)
BENJAMIN DISRAELI RITHOLZ
Original Assignee
BENJAMIN DISRAELI RITHOLZ
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 BENJAMIN DISRAELI RITHOLZ filed Critical BENJAMIN DISRAELI RITHOLZ
Priority to GB3538227A priority Critical patent/GB304010A/en
Publication of GB304010A publication Critical patent/GB304010A/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)
  • 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)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Eyeglasses (AREA)

Abstract

304,010. Ritholz, B. D. Dec. 30, 1927. Sight-testing apparatus.-An eye-testing device of the kind in which the chart member 15 is mounted on a flat bar 6, the margins of which are gripped by flanges 16 on the chart member 15, is provided with an eye piece 8 comprising a metal strip bent at its lower end to form a clamp for securing it to the bar 6. An opening 11 in the eye piece 8 carries a lens 13 retained in position by tongues 14 pressed out of the plate 8 as shown.
GB3538227A 1927-12-30 1927-12-30 Eye testing devices Expired GB304010A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3538227A GB304010A (en) 1927-12-30 1927-12-30 Eye testing devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3538227A GB304010A (en) 1927-12-30 1927-12-30 Eye testing devices

Publications (1)

Publication Number Publication Date
GB304010A true GB304010A (en) 1929-01-17

Family

ID=10377110

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3538227A Expired GB304010A (en) 1927-12-30 1927-12-30 Eye testing devices

Country Status (1)

Country Link
GB (1) GB304010A (en)

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