Answer :
Final answer:
The correct transposition of the prescription +3.00 +2.00 x 30 is +1.00 -2.00 x 120. Thus, none of the given options are correct
Explanation:
To transpose the prescription +3.00 +2.00 x 30, we subtract the cylinder power from the sphere power, and add 90 degrees to the axis. The result is a new prescription of +1.00 -2.00 x 120. Given that the strength of your glasses can be represented by these numbers, this new prescription still provides the same corrective power to your eyes, but in a different orientation.
For example, with the first option (a), the sign for the cylinder is incorrectly negative, and the axis is not appropriately transposed (+90 degrees or -90 degrees).
Therefore, none of the options given in your question are correct.
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