What does the acronym "CPM" stand for regarding contact lenses?

The acronym "CPM" stands for Corneal Power Measurement in the context of contact lenses. This term refers to the assessment of the curvature of the cornea, which is essential for determining the power required for contact lenses. Understanding the corneal shape and its refractive power is crucial in the fitting and correction capabilities of contact lenses, as this information directly influences the optical performance and comfort of the lenses worn by the patient.

By accurately measuring the corneal power, practitioners can tailor the lens prescription to meet the specific refractive needs of the individual, thereby enhancing vision and comfort. This is particularly important for patients with varying degrees of refractive errors, such as myopia, hyperopia, or astigmatism. Using the correct measurement ensures that the lenses sit correctly on the eye and provide the necessary correction.

The other options, while related to eye care and optics, do not accurately define "CPM" in the context of contact lenses. For instance, Central Power Measurement and Contact Lens Power Measurement might imply similar concepts but are not the standard terminology used in the field. Corneal Pressure Measurement pertains to assessments related to intraocular pressure, which is crucial for diagnosing conditions such as glaucoma but is not relevant to the power measurements associated with contact lens