A kind of circumscribed fixation lamp device is one hand-held ophthalmoscope of what is arranged. Circumscribed fixation lamp device includes a light-emitting component, an engaging portion and a lever arm. Light-emitting component is to provide a fixation light. Engaging portion is removably connect with hand-held ophthalmoscope. Lever arm connects light-emitting component and engaging portion, and wherein lever arm keeps light-emitting component mobile relative to what engaging portion, to guide a non-tested Rotation of eyeball a to specific direction. A kind of hand-held ophthalmoscope comprising above-mentioned circumscribed fixation lamp device is also disclosed simultaneously.一種外接式固視燈裝置是用以設置於一手持式眼底鏡。外接式固視燈裝置包含一發光元件、一結合部以及一活動臂。發光元件用以提供一固視光。結合部以可拆卸方式與手持式眼底鏡連接。活動臂連接發光元件以及結合部，其中活動臂使發光元件可相對於結合部移動，以導引一非受測眼球轉動至一特定方向。同時亦揭露一種包含上述外接式固視燈裝置之手持式眼底鏡。
