Slit Image Rotation - 0 ° to 180 ° degree Filter Disc. - Cobalt Blue, Green, Yellow, Open aperture. Slit Diaphragm Disc - Six apertures of 12, 9, 7, 3 and 0.2mm & a wedge shaped diaphragm for infinitely variable slit lengths High-Resolution Optics: Equipped with high-quality optics for clear and detailed examination of the eye. Illumination Options: Offers various illumination options, including diffused, retro-illumination, and narrow beam, enhancing diagnostic capabilities. Chin Rest and Headrest: Comfortable chin rest and headrest for stable patient positioning during examinations. Flexible positioning: Adjustable slit lamp arm allows for precise positioning according to patient needs. Powered by a 12-volt 4.5-amp Halogen Lamp for consistent lighting.