Morphologic features and surgically induced astigmatism of femtosecond laser versus manual clear corneal incisions
| Autor: | Ke Yao, Naibin Qu, Xingchao Shentu, Yanan Zhu, Wei Wang, Sha Zhu, Wen Xu, Pei-qing Chen |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
medicine.medical_specialty
Visual acuity Distance visual acuity genetic structures medicine.medical_treatment Visual Acuity Cataract Extraction law.invention Cornea 03 medical and health sciences 0302 clinical medicine Optical coherence tomography law Ophthalmology medicine Humans Prospective Studies medicine.diagnostic_test business.industry Astigmatism Corneal Topography Cataract surgery Corneal topography Laser eye diseases Sensory Systems Femtosecond 030221 ophthalmology & optometry Surgery Surgically induced astigmatism sense organs Laser Therapy medicine.symptom business 030217 neurology & neurosurgery Tomography Optical Coherence |
| Zdroj: | Journal of cataract and refractive surgery. 43(11) |
| ISSN: | 1873-4502 |
| Popis: | To compare the morphologic features and surgically induced astigmatism (SIA) between laser and manual clear corneal incisions (CCIs) after femtosecond laser-assisted cataract surgery.Eye Center, 2nd Affiliated Hospital, Medical College of Zhejiang University, Hangzhou, China.Prospective case series.Patients had femtosecond laser-assisted cataract surgery with a CCI created with the laser or manually after random allocation. The corrected distance visual acuity, corneal topography, and anterior segment optical coherence tomography were assessed at the 1-day, 1-week, 1-month, and 3-month follow-ups.The laser CCI group comprised 45 eyes and the manual CCI group, 48 eyes. The SIA was significantly lower in the manual CCI group than the laser CCI group at all visits (P .05). At the 1-day and 1-week follow-ups, the mean CCI thickness was significantly smaller in the manual CCI group (P .05). In the laser CCI group, the perpendicular linear distance between the external wound opening and the corneal vertex central line was statistically shorter than in the manual CCI group (P .05). At 3 months, the SIA was correlated with the perpendicular linear distance with a Pearson correlation coefficient of -0.341 (P = .001).Femtosecond laser-created CCIs for cataract surgery caused more SIA than manually created CCIs, which could have resulted from inaccurate or uncertain corneal incision positioning of the femtosecond machine. Manual creation of CCIs is recommended in femtosecond laser-assisted cataract surgery until the locating system for the femtosecond laser incision is updated. |
| Databáze: | OpenAIRE |
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