Final answer:
The course adjustment for power lenses is related to corrections in optical power for vision issues such as myopia; it should be tailored to the individual's refractive error and near and far points, particularly when dealing with high power lenses like -5.00 D.
Step-by-step explanation:
When discussing the course adjustment for a lens, particularly in the context of correcting visual acuity, we must consider optical power. The power lens in such a case typically refers to a corrective lens that has a higher optical power to correct vision issues such as myopia (nearsightedness). The information provided suggests that adjustments to the power lens should be made cautiously, especially when working with higher power values such as those necessary to assist individuals with a severe degree of refractive error.
For example, a myopic administrator with a far point of 50.0 cm would require the calculation of the relaxed power of their eyes and the closest object they can see clearly based on their ability to accommodate. For visual aids or corrective lenses, power lenses with a strong diopter, potentially within the range of -5.00 D (for severe myopia), may be used. The course adjustment should thus be ideally suited to the corrective needs of the individual, factoring in their near and far points, and should only be applied when the higher power lens is in use.