JPS6432838A - Subjective ophthalmoscope - Google Patents

Subjective ophthalmoscope

Info

Publication number
JPS6432838A
JPS6432838A JP62189635A JP18963587A JPS6432838A JP S6432838 A JPS6432838 A JP S6432838A JP 62189635 A JP62189635 A JP 62189635A JP 18963587 A JP18963587 A JP 18963587A JP S6432838 A JPS6432838 A JP S6432838A
Authority
JP
Japan
Prior art keywords
lens
lenses
astigmatism
spherical lens
disc
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.)
Granted
Application number
JP62189635A
Other languages
Japanese (ja)
Other versions
JP2632856B2 (en
Inventor
Akihiro Hayashi
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.)
Nidek Co Ltd
Original Assignee
Nidek Co Ltd
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 Nidek Co Ltd filed Critical Nidek Co Ltd
Priority to JP62189635A priority Critical patent/JP2632856B2/en
Publication of JPS6432838A publication Critical patent/JPS6432838A/en
Application granted granted Critical
Publication of JP2632856B2 publication Critical patent/JP2632856B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Eye Examination Apparatus (AREA)

Abstract

PURPOSE:To subjectively perform the sight examination and visual function examination of an examinee, by suppressing a spherical lens change-over disc and an auxiliary lens change-over disc to correct the spherical effect formed by a cross column optical system. CONSTITUTION:An examinee answers the question of an examiner while looks the optotypes on the extension of a measuring optical axis through various lenses arranged in front of his eye 2 to be examined. An auxiliary lens disk A(4A), a strong spherical lens disc 5 and a weak spherical lens disc 6 are arranged around a shaft 3 being a center of rotation and a plurality of auxiliary lenses 7, a strong spherical lens 8 and a weak spherical lens 9 are arranged on the same circumference of a circle. A positive astigmatism lens 12 and a negative astigmatism lens 13 are equal in the absolute value of power and astigmatism lenses 14, 15 different in a code are arranged and the powers of the astigmatism lenses can be continuously changed. The prisms A18, A19 arranged on rotatable prism discs A20, B21 are equal in a deflection angle and the refractive powers of the prisms can be continuously changed by the change in a rotary direction.
JP62189635A 1987-07-28 1987-07-28 Subjective optometer Expired - Lifetime JP2632856B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62189635A JP2632856B2 (en) 1987-07-28 1987-07-28 Subjective optometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62189635A JP2632856B2 (en) 1987-07-28 1987-07-28 Subjective optometer

Publications (2)

Publication Number Publication Date
JPS6432838A true JPS6432838A (en) 1989-02-02
JP2632856B2 JP2632856B2 (en) 1997-07-23

Family

ID=16244596

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62189635A Expired - Lifetime JP2632856B2 (en) 1987-07-28 1987-07-28 Subjective optometer

Country Status (1)

Country Link
JP (1) JP2632856B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007125125A (en) * 2005-11-01 2007-05-24 Nidek Co Ltd Optometric apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5944237A (en) * 1982-09-03 1984-03-12 株式会社ニコン Self-feeling eye inspecting apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5944237A (en) * 1982-09-03 1984-03-12 株式会社ニコン Self-feeling eye inspecting apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007125125A (en) * 2005-11-01 2007-05-24 Nidek Co Ltd Optometric apparatus

Also Published As

Publication number Publication date
JP2632856B2 (en) 1997-07-23

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