Right Mfg. Co., Ltd.

Norikazu Hamanaka

Keisuke Suzuki

Kenichi Takahashi

Yasunori Ueno

Kotaro Kawanishi

Hajime Hakamada

In a slit lamp microscope, ease of maintenance of an illumination-power-supply cable is improved while preventing the cable from appearing untidy. An illumination support arm of a slit lamp microscope is provided with a groove-shaped cable holder in which the illumination-power-supply cable is disposed along the outer surface of the illumination support arm in an externally exposed state. This configuration facilitates replacement of the illumination-power-supply cable even when a problem, such as breaking of the illumination-power-supply cable, occurs, thus improving ease of maintenance. Furthermore, because the illumination-power-supply cable is disposed along the groove-shaped cable holder, the slit lamp microscope has a neat appearance.

Slit lamp microscope

An eye examination apparatus includes an accommodation power acquisition unit, a corrected accommodation power calculation unit, a drive unit and an accommodative microfluctuation measurement unit. The accommodation power acquisition unit acquires an accommodation power which is determined from a difference between a near point and a distant point of an examined eye. The corrected accommodation power calculation unit calculates an integrated value of the accommodation power and a correction coefficient. The drive unit drives a vision target in a direction of an optical axis of the examined eye. The accommodative microfluctuation measurement unit controls the drive unit to cause the vision target to be arranged onto a corrected accommodation position corresponding to the integrated value, such that the accommodative microfluctuation measurement unit measures an eye accommodation function based on a frequency of appearance of a high frequency component representative of ciliary body accommodative microfluctuation.

Eye examination apparatus, method for manufacturing spectacle lens, spectacle lens, method for manufacturing multifocal eyeglasses, and multifocal eyeglasses

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Tokyo, Japan

Norikazu Hamanaka