New techniques in fundus examination: II. A new simplified technique for binocular indirect ophthalmoscopy

A new technique of binocular indirect ophthalmoscopy uses a Finhoff transilluminator, held between the observer's eyes, as the light source. The light is focused in the patient's dilated pupil through a condensing lens in a darkened room and the image is seen stereoscopically. The advantages and limitations of this technique and the optical principles are highlighted.