If Primary Lens Is Too Tight:
Up and left on the chart loosens the fit but keeps the same myopia reduction. From the example above, the next loosest lens with the same base curve is 42.50/-3.50(.5e)

If Primary Lens Is Too Loose:
Down and right on the chart tightens the fit but keeps the same myopia reduction. From the example above, the next loosest lens with the same base curve is 43.50/-4.50(.5e)

Use the legend below to adjust the fit and amount of reduction
Up and Left = Loosens fit with same myopia reduction
Up and Right = Loosens fit with more myopia reduction

Down and Right = Tightens fit with same myopia reduction
Down and Left = Tightens fit but decreases the myopia reduction

Right = Same fit with more myopia reduction
Left = Same fit with less myopia reduction