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Abbe #s
Abbe #s used on the ABO
| Question | Answer |
|---|---|
| Crown Glass | 59-61 |
| CR-39 | 56-58 |
| Barium Crown | Low 50s |
| Trivex | 43-45 |
| Flint | Low 30s |
| Polycarbonate | 29-31 |
| the higher the number, the______________optical performance | better |