„Aspherical Optical System“ (AOS) exclusively from HEINE eliminates corneal and iris reflexes to provide large, crisp and glare-free fundus images.

• Flat, elliptical illumination beam produced by HEINE’s aspherical optical system [ 01 ]
• Observation path [ 02 ]
• Redirected iris and corneal reflexes [ 03 ]
• The elliptical light beam enters through the lower half of the cornea. The illumination beam has been separated from the observation beam (Gullstrand-Principle). All reflexes are diverted away from the observation beam due to the curvature of the reflective cornea. Due to the flat, compressed form of the light beam, a maximum amount of light enters through the pupil [ 04 ]
• Once past the anterior chamber, the light beam opens up dramatically to illuminate a large area of the retina [ 05 ]