Why Rounded Corners are Easier on the Eyes - UX Movement
Anyone can appreciate the aesthetic beauty of rounded corners, but not everyone can explain where exactly that beauty comes from. The answer to that is literally in your eye.
Some experts say that rectangles with rounded corners are easier on the eyes than a rectangle with sharp edges because they take less cognitive effort to visually process. The fovea is fastest at processing circles. Processing edges involve more “neuronal image tools” in the brain . Thus, rectangles with rounded corners are easier process because they look closer to a circle than a regular rectangle.
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