Final answer:
Option B. Multifocal lenses, such as Proclear 1 day multifocal, should be fitted using the manifest refraction and specific fitting guidelines to ensure correct fit and vision correction. The fitting process is detailed and takes into account the unique vision needs of the patient, rather than using arbitrary measurements.
Step-by-step explanation:
To fit Proclear 1 day multifocal lenses, one should utilize the manifest refraction and specific fitting guidelines provided by the manufacturer. Such a methodical approach ensures a correct fit and addresses the unique prescription needs of the patient's vision condition. Contact lens fitting is not based on arbitrary measures such as the patient's shoe size or through random choices. It also should not be left to chance as with flipping a coin. The fitting process must consider various factors, including the curvature of the cornea, the diameter of the lens, and the required refractive correction, taking into account whether the person is myopic or hyperopic and their level of presbyopia.
This precise approach provides optimal vision correction and comfort. Prescriptions for vision correction are expressed in diopters, which describe the refractive power needed to focus light correctly onto the retina. Factors like the power of the tear layer between the cornea and the lens must be taken into account for ideal correction, especially in the context of multifocal lens fitting.