GB225743A - Improvements in sight testing trial frames - Google Patents

Improvements in sight testing trial frames

Info

Publication number
GB225743A
GB225743A GB386024A GB386024A GB225743A GB 225743 A GB225743 A GB 225743A GB 386024 A GB386024 A GB 386024A GB 386024 A GB386024 A GB 386024A GB 225743 A GB225743 A GB 225743A
Authority
GB
United Kingdom
Prior art keywords
sight
frames
testing trial
trial frames
trial
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
GB386024A
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
Priority to GB386024A priority Critical patent/GB225743A/en
Publication of GB225743A publication Critical patent/GB225743A/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
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/11—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for measuring interpupillary distance or diameter of pupils

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)
  • Eyeglasses (AREA)

Abstract

225,743. Laurance, L., and Wood, H. O. Feb. 14, 1924. Sight-testing apparatus. - Sight-testing trial frames are constructed so as to give lateral clearance for the insertion and withdrawal of the trial lenses horizontally. Each of the eye-frames a is provided with an upward extension a<1> terminating in a bearing a<2> from which a support b projects laterally for a short distance, then rearwardly and finally downwardly so that its lower end is at the normal eye level. To the lower end is attached the side wire c. An adjusting screw b<3> is fitted to enable the inclination to the plane of the eyes to be varied.
GB386024A 1924-02-14 1924-02-14 Improvements in sight testing trial frames Expired GB225743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB386024A GB225743A (en) 1924-02-14 1924-02-14 Improvements in sight testing trial frames

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB386024A GB225743A (en) 1924-02-14 1924-02-14 Improvements in sight testing trial frames

Publications (1)

Publication Number Publication Date
GB225743A true GB225743A (en) 1924-12-11

Family

ID=9766255

Family Applications (1)

Application Number Title Priority Date Filing Date
GB386024A Expired GB225743A (en) 1924-02-14 1924-02-14 Improvements in sight testing trial frames

Country Status (1)

Country Link
GB (1) GB225743A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170164824A1 (en) * 2015-12-11 2017-06-15 Oculus Optikgeraete Gmbh Trial Frame
CN106859588A (en) * 2015-12-11 2017-06-20 欧科路光学器械有限公司 Trial Frame

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170164824A1 (en) * 2015-12-11 2017-06-15 Oculus Optikgeraete Gmbh Trial Frame
CN106859588A (en) * 2015-12-11 2017-06-20 欧科路光学器械有限公司 Trial Frame
CN106873187A (en) * 2015-12-11 2017-06-20 欧科路光学器械有限公司 Trial Frame
US20170188812A1 (en) * 2015-12-11 2017-07-06 Oculus Optikgeraete Gmbh Trial Frame
US10271724B2 (en) * 2015-12-11 2019-04-30 Oculus Optikgeraete Gmbh Trial frame
US10390697B2 (en) * 2015-12-11 2019-08-27 Oculus Optikgeraete Gmbh Trial frame

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