Keeler 1126-P-1004 Standard Ophthalmoscope 3.6V head & bulb only in carton The industry Standard for ward and GP use An easy to use uncomplicated ophthalmoscope. Features: Positive maywheel lens control allows you to click through lens powers from +40D and -25D Two diagnostic beams - wide angle for general examination and macula for more detailed views Swing over Red Free Filter can be used with both apertures Integral soft brow rest Wide Angle - Illuminates the largest area of fundus for the best possible general diagnosis through a dilated pupil. Macular - Designed specifically for examination of the macular region of the fundus where a larger beam would create excessive pupillary reaction or patient discomfort. Red Free - The red free filter is used to examine blood vessels in fine detail. By filtering out the red light, blood vessels are silhouetted black against a dark green background. Contents: Standard ophthalmoscope Spare bulb