Welch Allyn Panoptic Ophthalmoscopes with cobalt-blue filter and corneal viewing lens. These ophthalmoscopes incorporate the innovative Axial PointSource(TM) optical system, which provides a wide, panoramic view of the fundus that is five times larger than achieved with a standard ophthalmoscope in an undilated eye. PanOptic(TM) ophthalmoscopes also provide increased magnification over standard ophthalmoscopes and work with all Welch Allyn 3.5V power handles and wall transformers.