| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | eye chart | Western countries | Commonly used to assess visual acuity for driving and other activities | 1 |
| 2 | eye chart | Western countries | Commonly used for testing visual acuity in ophthalmology and optometry clinics | 1 |
| 3 | eye chart | Western countries | Typically used for testing visual acuity and prescription in an optometrist's office. | 1 |
| 4 | star charts | Western countries | Used for stargazing and navigation by astronomy enthusiasts and professionals | 1 |
| 5 | star charts | Western cultures | Star charts and celestial maps are studied for astronomical purposes but are not commonly used for navigation, especially at sea. | 1 |