Which term describes the condition where light focuses at two distinct images instead of one?

The term that describes the condition where light focuses at two distinct images instead of one is astigmatism. This optical defect occurs when the cornea or lens is not perfectly spherical, leading to uneven curvature. As a result, light rays entering the eye are focused at multiple points, creating multiple images or a blurred vision effect. Individuals with astigmatism often experience distortions or blurriness at all distances, as the eye struggles to reconcile the different focal points. Recognizing and diagnosing astigmatism is important because it can significantly affect visual clarity and comfort, necessitating corrective lenses or other interventions to achieve clearer vision.