The Marco Ultra M Series Slit Lamps are truly the next generation of slit lamps with light-gathering ultra optics, enhanced by high-luminance LED. Patent-pending, built-in background illumination optimizes digital imaging. There is a larger 14mm, continuously variable aperture. The slit lamps have a fully integrated, low-voltage system that conceals all hardware. The expanded chin rest accommodates larger patient access. Experience a true difference.