Properties and Characteristics of Surgical Microscopes for Microneurosurgery(<SPECIAL ISSUE>Learning about Devices for Neurosurgical Therapy)

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  • Iwama Toru
    Department of Neurosurgery, Gifu University Graduate School of Medicine

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  • 手術用顕微鏡の構造と特性 : 脳神経外科医に必要な知識(<特集>脳神経外科治療のデバイスを知る・使う)

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Objective diameter, stereo base, illumination, anti-reflective coating and design complexity of optical parts (lenses, prisms, etc.) are all essential optical parameters of surgical microscopes. Neurosurgeons should understand the relationship between working distance, magnification, aperture, light output, depth of focus, exit pupil, and heat injury of the tissue. Adjustments of diopter scale and balance, and draping are very important for comfortable microneurosurgery. Operators should keep in mind that surgical procedures are performed at the center of the microscopic operative field with adequate magnification, aperture and light output in a relaxed posture.

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