| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | astigmatism | Western countries | Astigmatism is a common vision condition in Western countries, often corrected with eyeglasses or contact lenses. | 8 |
| 2 | astigmatism | Japan | Astigmatism in Japan is less common, detected early, and corrected through advanced eye care technology. | 5 |
| 3 | astigmatism | United States | Astigmatism is a common refractive error in the United States that is often corrected with prescription eyeglasses or contact lenses. | 4 |