Assessment of Long-Term Anterior and Posterior Topographic Changes in the Cornea After Ptosis Surgery Using Fourier Harmonic Analysis
| Autor: | Rika Shirakawa, Risako Yamamoto, Takashi Ono, Tetsuya Toyono, Takashi Miyai, Mika Noda, Junko Yoshida |
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| Rok vydání: | 2021 |
| Předmět: |
Blepharoplasty
Male medicine.medical_specialty genetic structures Visual Acuity Significant negative correlation Refraction Ocular law.invention Cornea Ptosis law medicine Blepharoptosis Humans In patient Aged Retrospective Studies Best corrected visual acuity Aged 80 and over Keratometer Fourier Analysis business.industry Astigmatism Corneal Topography eye diseases Surgery Ophthalmology medicine.anatomical_structure Female sense organs medicine.symptom business Corneal astigmatism Follow-Up Studies |
| Zdroj: | Cornea. 40(4) |
| ISSN: | 1536-4798 |
| Popis: | PURPOSE We aimed to assess the corneal refractive changes induced by ptosis surgery in patients with acquired ptosis using Fourier harmonic analysis. METHODS This retrospective observational study enrolled consecutive patients who underwent levator aponeurotic surgery for acquired ptosis at the Department of Ophthalmology in the University of Tokyo Hospital from May 2016 to January 2018. Best corrected visual acuity, central corneal thickness, average keratometric corneal power (AvgK), corneal astigmatism, and topographic data using Fourier analysis were analyzed preoperatively and 6 months postoperatively. RESULTS Thirty-two eyes of 32 patients (age, 72.6 ± 8.5 years) were included in this study. There were no significant differences in best corrected visual acuity and central corneal thickness. However, there were significant decreases in anterior AvgK, anterior corneal astigmatism, and posterior corneal astigmatism 6 months postoperatively (all, P < 0.001). Fourier harmonic analysis showed that the anterior spherical component significantly decreased 6 months postoperatively (P < 0.001). There were no significant differences in other components of the anterior and posterior cornea. There was a significant negative correlation between preoperative posterior AvgK and changes in posterior AvgK (r = -0.891, P < 0.001) and between preoperative posterior corneal astigmatism and changes in posterior corneal astigmatism at 6 months (r = -0.858, P < 0.001). CONCLUSIONS Anterior and posterior corneal keratometry and posterior corneal astigmatism significantly changed 6 months after ptosis surgery for acquired ptosis. |
| Databáze: | OpenAIRE |
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