What is the condition when one eye requires a plus lens while the other requires a minus lens?

The condition where one eye requires a plus lens while the other requires a minus lens is known as antimetropia. This occurs when one eye is hyperopic (farsighted) and needs a plus lens to help focus on nearby objects, while the other eye is myopic (nearsighted) and needs a minus lens for distant vision. This disparity in refractive errors can lead to challenges in binocular vision and may require specific corrective measures to achieve balanced vision.

Amblyopia, on the other hand, refers to a visual impairment in which one eye fails to achieve normal vision, often due to a lack of visual stimulation during critical developmental periods. Astigmatism is characterized by an irregular curvature of the cornea or lens, causing blurred vision at various distances but does not imply the need for different corrective lenses in each eye. Hyperopia, which refers exclusively to farsightedness, involves the need for plus lenses but does not encompass the myopic condition in the other eye.