| Autor: |
Robert H. Webb, C. Murray Penney, Keith P. Thompson |
| Rok vydání: |
1991 |
| Zdroj: |
Noninvasive Assessment of the Visual System. |
| DOI: |
10.1364/navs.1991.wc3 |
| Popis: |
We have measured refractive error through a succession of small regions of the cornea. In these initial measurements approximately twenty regions of 1 mm diameter are selected for each measured eye. For experimental convenience, the regions are chosen along vertical horizontal and 45 degree oblique meridia through a central point near the comeal apex. Refractive error at each locus is determined by a variant of the Scheiner principle. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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