Effect of total higher-order aberrations on accommodation in pseudophakic eyes
| Autor: | Kouzou Masuda, Yoshiaki Hara, Tomo Nishi, Futoshi Taketani, Tetsuo Ueda, Yoshiaki Nawa |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
medicine.medical_specialty
Pseudophakia genetic structures media_common.quotation_subject medicine.medical_treatment Visual Acuity Coma (optics) Intraocular lens Pupil Lens Implantation Intraocular Ophthalmology medicine Humans Minimally Invasive Surgical Procedures Contrast (vision) Aged media_common Aged 80 and over Phacoemulsification business.industry Accommodation Ocular Middle Aged Refractive Errors eye diseases Sensory Systems Aberrations of the eye Optometry Eye disorder Surgery sense organs business Accommodation |
| Zdroj: | Journal of Cataract and Refractive Surgery. 32:1643-1649 |
| ISSN: | 0886-3350 |
| DOI: | 10.1016/j.jcrs.2006.05.020 |
| Popis: | Purpose To analyze the effect of total higher-order aberrations (HOAs) on the range of accommodation in pseudophakic eyes and the size of near-vision optotypes. Setting Department of Ophthalmology, Nara Medical University, Nara, Japan. Methods The study comprised 30 patients (44 eyes) who were diagnosed with cataract at Nara University of Medical Science Hospital and Municipal Oyodo Hospital. Inclusion criteria included no other eye disorder and a best corrected distance acuity of 20/20 or better 1 month after cataract surgery. All patients had small-incision phacoemulsification followed by in-the-bag implantation of a monofocal intraocular lens (SA60AT, Alcon). All incisions were self-sealing. Accommodation in pseudophakic eyes was measured by the lens-loading method in an examination room under constant illumination. Ocular HOAs were measured using the KR-9000PW Hartmann-Shack wavefront analyzer (Topcon). Results The mean patient age was 75.8 years ± 5.4 (SD) (range 64 to 83 years). The Pearson correlation coefficient (r) showed a significant positive correlation between the range of accommodation and Z7 (vertical coma) for a 4.0 mm pupil using the 1.0 near-vision optotype. There was a significant negative correlation between the range of accommodation and Z12 (spherical aberration) for a 4.0 mm pupil using the 1.0 near-vision optotype (r = .311, P = .040 for Z7; r = −.365, P = .015 for Z12). No other parameter was significantly correlated with the range of accommodation. Conclusions Measurement of accommodation in pseudophakic eyes by the lens-loading method using the 1.0 near-vision optotype showed that eyes with larger vertical coma aberrations achieved a larger range of accommodation. In contrast, eyes with larger spherical aberrations had smaller amounts of accommodation. The size of the near-vision optotype may affect accommodation analysis in pseudophakic eyes. |
| Databáze: | OpenAIRE |
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