Fused Crescent Design
The Austil-Focal lens is a
translating/alternating multifocal design with a spherical base curve and a
crescent-shaped reading segment located in the inferior zone of the front
surface of the lens. The optics of the near-vision zone are lathed on the
front surface of the lens, allowing the Austil-Focal to
accommodate
spherical, aspheric or toric base curve geometry.
This
design allows the lens to position inferiorly, in primary gaze, so that the add
segment does not intrude on the visual axis.
Upon down gaze, the lens translates upward, allowing the segment to
position within the visual axis for near vision.
This design is recommended for patients who suffer fitting problems arising from nasal or temporal rotation of the lens. The crescent-shaped add zone preserves acuity for up to 20% of nasal/temporal rotation.
Diameters: 8.50 mm to 10.0 mm
Base Curve: 6.50 mm to 8.44 mm
Distance: -20.0 D to +6.00 D
Add Power: +0.75 to +3.00 D
Danker Laboratories
The RGP Multifocal Specialists
(800) 237-9641