Assessing visual quality with the point spread function using the NIDEK OPD-Scan II.
| Autor: | Ligabue EA; CDI Eye Clinic, Milan, Italy. edoliga@tiscali.it, Giordano C |
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| Jazyk: | angličtina |
| Zdroj: | Journal of refractive surgery (Thorofare, N.J. : 1995) [J Refract Surg] 2009 Jan; Vol. 25 (1 Suppl), pp. S104-9. |
| DOI: | 10.3928/1081597X-20090115-05 |
| Abstrakt: | Purpose: To present the use of the point spread function (PSF) metric pre- and postoperatively for the assessment of visual quality in cataract and refractive surgery. Methods: Case examples of cataract and refractive surgery and the effect of accommodation are presented. All PSF measurements were obtained using the NIDEK OPD-Scan II, and corneal internal and total aberrations were simulated using the NIDEK OPD-Station software. All eyes underwent corneal topography, wavefront aberrometry, autorefraction, keratometry, and pupillometry measurements pre- and postoperatively using the OPD-Scan II. The PSF was used to assess visual quality. Results: Four case examples including refractive surgery, aspheric multifocal intraocular lens (IOL) implantation, toric IOL implantation, and the difference in PSF due to accommodation are presented. Conclusions: The PSF in refractive and cataract surgery is a clinically valuable metric to evaluate the patient's visual quality pre- and postoperatively. The OPD-Scan II can measure the effect of accommodation and distant fixation providing an assessment of changes in visual quality. |
| Databáze: | MEDLINE |
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