This award-winning ophthalmoscope has a 5x wider field of view so you can more easily observe conditions such as hypertension, diabetic reinopathy and papilledema. It provides fast, easy entry into undialated pupils with 25° field of view versus the standard 5° field. Plus, a greater working distance allows both patient and practitioner to feel more comfortable. Compatible with existing 3.5v Welch Allyn power sources. Includes cobalt blue filter and add-on corneal magnifying lens (head only).