Fitting & Verification
Dyer Chart for Other Lens Paramaters

DYER CHART FOR OTHER LENS PARAMETERS
Base Curve (Diopters)	Dia- meter of Lens	OZ	Peripheral Curves
40.00-40.25	9.2	7.6	36.50/.20	32.50/.30	27.50/.30
40.50-40.75	9.1	7.5	37.00/.20	33.00/.30	27.50/.30
41.00-41.25	9.0	7.4	37.50/.20	33.50/.30	27.50/.30
41.50-41.75	8.9	7.3	38.00/.20	34.00/.30	27.50/.30
42.00-42.25	8.8	7.3	38.50/.20	34.50/.25	27.50/.30
42.50-42.75	8.7	7.3	39.00/.20	35.00/.20	29.00/.30
43.00-43.25	8.6	7.2	39.500/.20	36.50/.20	29.00/.30
43.50-43.75	8.5	7.1	40.00/.20	36.00/.20	29.00/.30
44.00-44.25	8.4	7.0	40.50/.20	36.50/.20	30.00/.30
44.50-44.75	8.3	6.9	41.00/.20	37.00/.20	30.00/.30
45.00-45.25	8.2	6.8	41.50/.20	37.50/.20	31.00/.30
45.50-45.75	8.1	6.7	42.00/.20	38.00/.20	31.00/.30
46.00-46.25	8.0	6.7	42.50/.15	38.50/.20	33.00/.30
46.50-46.75	7.9	6.7	43.00/.10	39.00/.20	33.00/.30
47.00-47.25	7.9	6.7	43.50/.10	39.50/.20	33.00/.30
47.50-47.75	7.9	6.7	44.00/.10	40.00/.20	33.00/.30
48.0-48.25	7.9	6.7	44.50/.10	40.50/.20	33.00/.30
48.50-48.75	7.9	6.97	45.00/.10	41.00/.20	33.00/.30
49.00-49.25	7.8	6.6	45.50/.10	41.50/.20	35.00/.30
49.50-49.75	7.8	6.6	46.00/.10	42.00/.20	35.00/.30
50.00-50..25	7.8	6.6	46.50/.10	42.50/.20	35.00/.30

 

Recommended Lens Thickness Diameter (mm)
Lens Powers	9.0	8.5	8.0	7.5	7.0
Minus Power
Plano to -0.62	0.18	0.17	0.16	0.15	0.14
-0.75 to -1.37	0.17	0.16	0.15	0.14	0.13
-1.50 to -2.12	0.16	0.15	0.14	0.13	0.12
-225 to -2.87	0.15	0.14	0.13	0.12	0.11
-3.00 to -3.62	0.14	0.13	0.12	0.11	1.10
-3.75 to -4.37	0.13	0.12	0.11	0.10	1.10
-4.50 to -5.12	0.12	0.11	0.10	0.10	1.10
-5.25 to -5.87	0.11	0.10	0.10	0.10	1.10
-6.00 & over	0.10	0.10	0.10	0.10	1.10
Plus Power
+0.12 to +1.75	0.20	0.18	0.17	0.16	0.15
+0.87 to1.50	0.22	0.20	0.19	0.18	0.16
+1.62 to +2.25	0.24	0.22	0.21	0.20	0.18
+2.37 to +3.00	0.26	0.24	0.23	0.21	0.20
+3.12 to +3.75	0.28	0.26	0.25	0.23	0.22
+3.87 to +4.50	0.30	0.28	0.27	0.25	0.24
+4.62 to +5.25	0.32	0.30	0.29	0.27	0.25