| US 7,341,349 B2 | ||
| Ophthalmologic apparatus and ophthalmologic chart | ||
| Yasufumi Fukuma, Tokyo (Japan); Kohji Nishio, Tokyo (Japan); Takefumi Hayashi, Tokyo (Japan); Eiichi Yanagi, Tokyo (Japan); Noriyuki Nagai, Tokyo (Japan); Yasuo Kato, Tokyo (Japan); Yukio Ikezawa, Tokyo (Japan); Mineki Hayafuji, Tokyo (Japan); Tadashi Okamoto, Tokyo (Japan); and Masakazu Hayashi, Tokyo (Japan) | ||
| Assigned to Kabushiki Kaisha TOPCON, Tokyo (Japan) | ||
| Appl. No. 10/495,467 PCT Filed Nov. 15, 2002, PCT No. PCT/JP02/11942 § 371(c)(1), (2), (4) Date May 13, 2004, PCT Pub. No. WO03/041572, PCT Pub. Date May 22, 2003. |
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| Claims priority of application No. 2001-350705 (JP), filed on Nov. 15, 2001. | ||
| Prior Publication US 2005/0012896 A1, Jan. 20, 2005 | ||
| Int. Cl. A61B 3/02 (2006.01) | ||
| U.S. Cl. 351—240 [351/237] | 10 Claims |
| 1. An optometric apparatus, comprising:
an optical system for a right eye, for projecting a chart for the right eye; and
an optical system for a left eye, for projecting a chart for the left eye, in order to inspect visual function of both eyes
of an examinee, wherein
said optical systems for the right and left eyes project the same fusion patterns in order to perform a fusion of both eyes
of the examinee,
said optical systems for the right and left eyes project targets for inspecting visions as the charts for the right and left
eyes, and
a distance from eyes of the examinee to be examined to the targets for inspecting the visions is variable optically and a
convergence angle determined by optical axes of the optical systems for the right and left eyes varies pursuant to said distance.
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