Final answer:
The primary objective that distinguishes the Proclear Multifocal and XR/Biofinity multifocal lenses is balancing near and distance vision. These lenses are designed to correct presbyopia by incorporating multiple optical powers to enable clear vision at different distances, mimicking the eye's accommodation process.
Step-by-step explanation:
What distinguishes the primary objective of Proclear Multifocal and XR/Biofinity multifocal lenses is C) Balancing near and distance vision. Multifocal lenses are designed to correct presbyopia, a condition that affects the eye's ability to focus on objects at varying distances, typically associated with aging. Myopia (nearsightedness) is the inability to see far objects clearly, and it is corrected with a diverging (concave) lens. Conversely, hyperopia (farsightedness) is the inability to see near objects clearly, and it is corrected with a converging (convex) lens. Multifocal lenses incorporate different lens powers to assist the eye in seeing clearly across different distances without the need to switch between multiple pairs of glasses. They manage this by featuring regions with varying optical powers that cater to distant, intermediate, and near vision, supporting the eye's natural process of accommodation