Effects of astigmatic keratotomy combined with scleral tunnel incisions for the treatment of high astigmatism after penetrating keratoplasty
| Autor: | Kang‑Kang Ji, Rong‑Feng Liao, Min‑Jie Ye, Zheng‑Yu Gu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Cancer Research
medicine.medical_specialty genetic structures business.industry Articles General Medicine eye diseases Astigmatic keratotomy 03 medical and health sciences High astigmatism 0302 clinical medicine Meridian (perimetry visual field) Immunology and Microbiology (miscellaneous) Ophthalmology 030221 ophthalmology & optometry medicine Surgically induced astigmatism Scleral tunnel business Surgical treatment Alpins method Dioptre |
| Zdroj: | Experimental and Therapeutic Medicine. |
| ISSN: | 1792-1015 1792-0981 |
| DOI: | 10.3892/etm.2018.6968 |
| Popis: | The present study aimed to evaluate the efficacy, predictability and safety of astigmatic keratotomy (AK) combined with scleral tunnel incisions in the treatment of high astigmatism after penetrating keratoplasty (PKP). Paired AK combined with scleral tunnel incisions was performed at the steep astigmatic meridian in 8 eyes of 8 patients with high keratometric astigmatism [>5.0 diopters (D)] after PKP. Pre- and post-operative parameters, including uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), refraction and keratometric astigmatism were evaluated. The Alpins method for vector analysis was used to evaluate the changes in keratometric astigmatism. The results indicated a statistically significant reduction in the mean keratometric astigmatism from 8.16±3.02 D pre-operatively to 2.28±1.07 D at 3 months postoperatively. The mean UCVA improved from 0.95±0.24 logarithm of the minimum angle of resolution (logMAR) pre-operatively to 0.61±0.17 logMAR at 3 months postoperatively (P0.05). Between 3 and 6 months after the surgery, the keratometric astigmatism remained stable. Alpins vector analysis demonstrated the relative predictability of this combined surgical treatment. The surgically induced astigmatism was significantly correlated with the target induced astigmatism (r=0.76, P |
| Databáze: | OpenAIRE |
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