Using the 'over +0.75' MEM method, if MEM is +1.50, what tentative add should you RX?

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Multiple Choice

Using the 'over +0.75' MEM method, if MEM is +1.50, what tentative add should you RX?

Explanation:
In this MEM approach to estimating a near add, you account for a built‑in offset when you use the “over +0.75” method. The MEM reading tends to overshoot the actual required add by about 0.75 diopters due to the testing setup and near accommodative effort. So you subtract 0.75 D from the MEM result to get the tentative reading add. With MEM at +1.50 D, subtract 0.75 D to get a tentative add of +0.75 D. This is the best starting point before you refine with further near-vision testing.

In this MEM approach to estimating a near add, you account for a built‑in offset when you use the “over +0.75” method. The MEM reading tends to overshoot the actual required add by about 0.75 diopters due to the testing setup and near accommodative effort. So you subtract 0.75 D from the MEM result to get the tentative reading add.

With MEM at +1.50 D, subtract 0.75 D to get a tentative add of +0.75 D. This is the best starting point before you refine with further near-vision testing.

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