Effect of even and odd-order aberrations on the accommodation response
| Autor: | Aikaterini I. Moulakaki, Antonio J. Del Águila-Carrasco, José J. Esteve-Taboada, Robert Montés-Micó |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | International Journal of Ophthalmology, Vol 10, Iss 6, Pp 955-960 (2017) |
| Druh dokumentu: | article |
| ISSN: | 2222-3959 2227-4898 |
| DOI: | 10.18240/ijo.2017.06.19 |
| Popis: | AIM: To investigate the potential effect that odd and even-order monochromatic aberrations may have on the accommodation response of the human eye. METHODS: Eight healthy subjects with astigmatism below 1 D, best corrected visual acuity 20/20 or better and normal findings in an ophthalmic examination were enrolled. An adaptive optics system was used in order to measure the accommodation response of the subjects’ eyes under different conditions: with the natural aberrations being present, and with the odd and even-order aberrations being corrected. Three measurements of accommodation response were monocularly acquired at accommodation demands ranging from 0 to 4 D (0.5 D step). RESULTS: The accommodative lag was greater for the accommodative demands of 1.5, 3, 3.5 and 4 D for the condition in which the even-order aberrations were corrected, in comparison to that obtained for the natural aberrations and corrected odd-order aberrations for the same accommodation demands. No statistically significant differences were found between the accommodation responses under the three conditions. CONCLUSION: The odd and even-order aberrations are not helping the visual system to accommodate, because their partial correction do not affect the accommodation performance. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|