PROBLEM TO BE SOLVED: To provide a slit lamp which enables an observer to switch between selective transmission and non-transmission of a beam of a specific wavelength to a patients eye side by switching an arrangement position of a specific filter transmitting only the beam of the specific wavelength with respect to an optical path without taking an observers eye from an eyepiece part and can increase workability and a degree of accuracy for an examination of the patients eye.SOLUTION: A slit lamp is configured such that filter holding means constituting the slit lamp includes specific filter holding means for holding a specific filter in a manner to switch by an electrical driving system and normal filter holding means for holding a normal filter in a manner to switch by a manual driving system and that the electrical driving system and the manual driving system are respectively driven independently.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】特定の波長の光線だけを透過させる特定フィルタの光路に対する配置位置の切替えによる、その特定の波長の光線の患者眼側への選択的透過又は非透過の切替えを、観察者が接眼部から目を離すことなしに行うことが可能で、患者眼の検査の作業性及び正確性を向上させることが可能なスリットランプを提供する。【解決手段】スリットランプを、それを構成するフィルタ保持手段が特定フィルタを電動駆動系で切替え可能に保持する特定フィルタ保持手段と通常フィルタを手動駆動系で切替え可能に保持する通常フィルタ保持手段とを含むように、かつ電動駆動系と手動駆動系とが、互いにそれぞれ独立して駆動するように、構成する。【選択図】図1
