+10.00D ~ +5.50D(0.50step)※+5.00D ~ +0.50D(0.25step)±0.00D-0.50D ~ -6.00D (0.25step)-6.50D ~ -16.00D (0.50step)-17.00D ~ -24.00D(1.00step)※※特注・直径14.2㎜のみ