Final answer:
Placing ocular centers wider than patient's PDs in minus lenses results in a prism with base out direction, as needed in the scenario described.
Explanation:
When ocular centers are placed wider than the patient's PDs in minus lenses, this results in a prism with a direction of Base out. Minus lenses are concave or diverging lenses used for treating nearsightedness. The placement of the ocular centers wider creates a prism that leads to a base out direction.
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