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Bifocals are eyeglasses with two distinct optical powers correcting vision at both long and short distances. Bifocals are commonly prescribed to people with presbyopia who also require a correction for myopia, hyperopia or astigmatism.
History & Measurement
Explore the main themes, entities and connections around Bifocals. Start with the topic map, then use the sections below for research and deeper semantic analysis.
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Bifocals | related to Bifocals in the animal world | The | 0.60 | section |
| Bifocals | related to Bifocals in the animal world | Thermonectus | 0.60 | section |
| Bifocals | related to Construction | Original | 0.60 | section |
| Bifocals | related to Construction | Up | 0.60 | section |
| Bifocals | related to Construction | The | 0.60 | section |
| Bifocals | related to Construction | Louis | 0.60 | section |
| Bifocals | related to Construction | Wecker | 0.60 | section |
| Bifocals | related to Construction | John Louis Borsch Jr | 0.60 | section |
| Bifocals | related to Construction | In | 0.60 | section |
| Bifocals | related to Construction | Henri | 0.60 | section |
| Bifocals | related to Construction | Henry | 0.60 | section |
| Bifocals | related to Construction | Courmettes | 0.60 | section |
These clusters group vocabulary that occurs around closely connected concepts in the source material.
Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.