What is the ad power for a patient whose refraction shows best visual acuity at distance with a power of +1.25+1.00X 95?

To determine the ad power for a patient with a distance refraction of +1.25 +1.00 X 95, we need to analyze the power given in the prescription and understand how it relates to accommodative demand.

The prescription indicates that the patient has a spherical component of +1.25 diopters and a cylindrical component of +1.00 diopters at an axis of 95 degrees. When calculating ad power, which is the added power for near vision, we primarily focus on the spherical component since ad power is concerned with the total impact of the lens on vision rather than the cylindrical aspect (which addresses astigmatism).

In general, the standard calculation to determine near ad power involves the patient's distance power augmented for viewing at closer ranges. For most routine scenarios, when considering a typical near working distance—especially around 40 cm—the ad power can often be calculated by the formula:

Ad Power = (Distance Refractive Power) + (Additional Power needed for Near Vision).

For a 40 cm working distance, an additional +2.50D is needed, which would be derived from typical formulas used in optometric practice. However, here, the specific task is to understand that the relevant ad power needed to