What is the medical term for blurred vision?

The medical term for blurred vision is amblyopia. Amblyopia, often referred to as "lazy eye," is a condition where vision in one of the eyes does not develop properly, leading to reduced vision that is not correctable by glasses or contact lenses. Individuals with amblyopia may experience blurred vision as the affected eye fails to achieve normal visual acuity, especially when the brain begins to favor the stronger eye.

In contrast, diplopia refers specifically to double vision, while presbyopia is age-related difficulty in focusing on close objects, usually occurring due to the lens of the eye becoming less flexible as one ages. Myopia, commonly known as nearsightedness, results in clear vision at close range but blurred vision at a distance. Each of these terms specifies different visual impairments or conditions that are not synonymous with blurred vision in a general sense, which is best captured by the term amblyopia.