ファイバー光源による額帯鏡

抄録

The author devised a headlight using a fiber light source, combining advantages of both reflector and glass fiber light guide.
The apparatus consists of three parts: a head band, a light guide cable and a reflector.
The reflector, a plane mirror of 30×20mm receives the light axis through a light guide cable at an angle of approximately 45° and reflects the light foward.
In the center of the mirror is provided a hole to fit a 10mm long cylinder of 5.2mm diameter through which visual examination is made.
This device is used in a similar manner to conventional reflector or headlight by positioning the reflector in front of the left eye.
The present fiber type reflector has a wide applicability in both outpatient clinic and operating room.
The reflecting mirror measures 5.5cm², and is far smaller than the conventional reflector of 50cm².
As a result, this device gives less obstruction to the peripheral visual field of a physician and allows writing or conversation with patients without changing the position of the reflector.