👉 Sunglasses math involves calculating the correct prescription power needed to reduce glare and protect eyes from UV radiation. The primary component is the "distance" between the center of the lens and the cornea, often denoted as 'C', measured in diopters (D). This distance is adjusted based on the wearer's specific needs, such as myopia (nearsightedness), hyperopia (farsightedness), astigmatism, and color vision deficiencies. For example, if someone has myopia with a refractive error of -6 D, the lenses would need to be at least 6 D away from the cornea. Additional factors like lens thickness and material can also affect the overall prescription, but the core concept remains: the closer the lenses are to the eye, the stronger the prescription needed to correct vision.
