Enhancing Vision

Launched at the 2012 ESCRS Congress, the AT LISA tri 839 MP is the first of a new generation of refractive-diffractive trifocal intraocular lenses designed to eliminate the middle-range trough in visual acuity seen with bifocal designs, said Ludwin Monz PhD, Carl Zeiss Meditec president and CEO. The lens splits incoming light 50 per cent to distance vision, 30 per cent to near and 20 per cent intermediate, and has high light transmittance. This helps maintain contrast sensitivity and range of vision, even in poor lighting, while reducing glare, haloes and other dysphotopsias. “The optics are very advanced,†Dr Monz said. It can be implanted through a 1.8mm incision. Zeiss also introduced PRESBYOND Laser Blended Vision. This corneal procedure increases the depth of field in both eyes, adjusting the dominant for intermediate to long vision and the non-dominant for near to intermediate. Overlap of the two fields in the intermediate range promotes fusion of the two images, making it a more flexible and tolerable alternative to conventional monovision. Astigmatism and other aberrations can also be corrected.

•  www.meditec.zeiss.com/escrs