What does the term 'marked improvement' in visual acuity convey?

The term 'marked improvement' in visual acuity signifies a significant enhancement in vision. This phrase is commonly used in clinical settings to describe a noticeable and substantial increase in a patient's ability to see, often measured through standardized tests of visual acuity. Such an improvement can indicate that a treatment, intervention, or corrective lens has been effective in addressing the patient's visual issues.

In the context of visual acuity, marked improvement would be reflected in substantial changes in measurements, likely leading the patient to experience improved clarity and focus in their vision. This term contrasts sharply with descriptions of decreases in vision, small changes, or no changes, which would communicate a lack of progress or deterioration rather than significant enhancement. Such clarity in terminology is crucial for both patients and practitioners to accurately assess and communicate the effectiveness of visual treatments or interventions.