< POST CATARACT - Bifocal Vision
ALFAÆ Full-Field - Round 22mm CR39Æ Uncoated Lenses
60MM DIAMETER LENS BLANKS
Segment Placement: 4mm down

Nominal Curve	True Curve	Radius mm	SAG at 50	Nominal Concave	Edge Thickness	Center Thickness	Adds in 0.25 Diopter Steps
12.00	12.12	43.729	7.85	6.00	6.0	12.0	2.00 to 3.00, 3.50 & 4.00
14.00	14.13	37.509	9.55	6.00	6.0	13.5	2.00 to 3.00, 3.50 & 4.00
16.00	16.13	32.858	11.54	6.00	6.0	15.0	2.00 to 3.00, 3.50 & 4.00