Which lens prescription indicates myopia?

Myopia, also known as nearsightedness, is a common refractive error where distant objects appear blurry while close objects can be seen clearly. This condition is corrected using concave lenses, which are represented by a negative sign in a lens prescription.

A negative lens prescription (- lens) indicates that the patient requires correction for myopia. These lenses are designed to diverge light rays before they reach the eye, allowing the light to focus correctly on the retina rather than in front of it, which is the issue faced by individuals with myopia.

The other options do not indicate myopia:

Plus lenses are used for hyperopia (farsightedness) and are positive in prescription. Bifocals and progressives are types of multifocal lenses designed to address presbyopia, which involves difficulty focusing on close objects and does not specifically indicate myopia.