Spherical Aberration Customization to Extend the Depth of Focus With a Clinical Adaptive Optics Visual Simulator
| Autor: | Pablo Artal, Eloy A. Villegas, Consuelo Robles, Lucia Hervella |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Adult
Male Optics and Photonics Depth of focus Corneal Wavefront Aberration Visual acuity genetic structures media_common.quotation_subject Visual Acuity Pupil diameter Young Adult 03 medical and health sciences 0302 clinical medicine medicine Humans Contrast (vision) Prospective Studies Adaptive optics Dilated eyes Dioptre Simulation Mathematics media_common Depth Perception Presbyopia eye diseases Ophthalmology Spherical aberration 030221 ophthalmology & optometry Female Surgery medicine.symptom 030217 neurology & neurosurgery Follow-Up Studies |
| Zdroj: | Journal of Refractive Surgery. 36:223-229 |
| ISSN: | 1081-597X |
| DOI: | 10.3928/1081597x-20200212-02 |
| Popis: | PURPOSE: To evaluate the use of the VAO adaptive optics visual simulator (Voptica SL, Murcia, Spain) for customization of spherical aberration to increase depth of focus. METHODS: Through-focus visual acuity with both high- and low-contrast letters from +1.00 to −3.00 diopters (D) was measured in 17 dilated eyes with three different induced amounts of spherical aberration for a 4.5-mm pupil diameter: control (0 µm), −0.15 µm, and −0.30 µm. RESULTS: The defocus curves followed the same behavior with both values of contrast, but the visual acuity was 0.2 logMAR lower with low contrast. The mean values of high-contrast logMAR visual acuity at far, intermediate (67 cm), and near (40 cm) were −0.10, 0.11, and 0.37 for control, 0.04, 0.00, and 0.15 for −0.15 µm, and 0.23, 0.00, and 0.06 for −0.30 µm conditions. The 95% confidence interval ranged from ±0.14 to ±0.45 logMAR and the middle 50% of the distribution was approximately 0.2 logMAR. CONCLUSIONS: Negative values of spherical aberration extend the depth of focus in different ways depending on each patient. The VAO is a new instrument that allows the visual customization of spherical aberration to enhance depth of focus. [ J Refract Surg . 2020;36(4):223–229.] |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|