Ball-Bearing Keratometry
We obtained steel test balls for keratometer calibration at nominal cost by using a selected set of steel ball bearings, readily available for nonoptical purposes. The set of keratometer tests balls each have an accuracy of greater than one part in 1,000.
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| Veröffentlicht in: | American journal of ophthalmology 1978-05, Vol.85 (5), p.715-715 |
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| Format: | Artikel |
| Sprache: | eng |
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| Online-Zugang: | Volltext |
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| Zusammenfassung: | We obtained steel test balls for keratometer calibration at nominal cost by using a selected set of steel ball bearings, readily available for nonoptical purposes. The set of keratometer tests balls each have an accuracy of greater than one part in 1,000. |
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| ISSN: | 0002-9394 1879-1891 |
| DOI: | 10.1016/S0002-9394(14)77111-9 |