Analysis of photoastigmatic keratectomy with the cross-cylinder ablation

Indian Journal of Ophthalmology

卷:60

关键词: Apoptosis;    glaucoma;    intraocular pressure;    retinal ganglion cells;    retinal ischemia;    tumor necrosis factor-alpha;    Branch retinal vein occlusion;    laser;    Lucentis;    macular edema;    Microbial etiology;    mucopurulent keratitis;    suppurative keratitis;    Intraoperative application of mitomycin C;    mitomycin C;    postoperative complications;    preoperative subconjunctival injection;    recurrence rate;    recurrent pterygium;    Cataract;    inflammation;    mydriasis;    prevention and control;    surgery;    Cross-cylinder technique;    photoastigmatic refractive keratectomy;    refractive surgery;   

DOI  :  10.4103/0301-4738.98707

来源: DOAJ

【 摘 要 】

Aim: The aim was to evaluate the safety and efficacy of the "cross-cylinder" technique in the correction of astigmatism. Setting and Design: A prospective interventional study from a university eye department was conducted. Material and Methods: The photoastigmatic refractive keratectomy (PARK) using the "cross-cylinder" technique was performed in 102 eyes of 84 patients with at least 0.75 D of astigmatism. The study population was divided into two groups: in the first group the preoperative astigmatic power ranged from −0.75 D to −3.00 D (group 1), in the second group it ranged from −3.25 D to −6.00 D (group 2). Group 1 included 82 eyes of 67 patients (29 males and 38 females) with a mean cylinder power of −1.90 ± 0.63 D, group 2 included 20 eyes of 17 patients (13 males and 4 females) with a mean cylinder power of -4.28 ± 0.76 D. All eyes were targeted for emmetropia. The results were evaluated using Calossi′s vector analysis method. Six-month postoperative outcomes are presented. Results: Six months after PARK the mean sphere for the entire cohort was +0.28 ± 0.75 D (range +2.5 to −2 D), the mean cylindrical power was +0.33 ± 0.51 D (range +2.5 to −1.25 D) and the mean spherical equivalent refraction was +0.73 ± 0.81 D (range +1.75 to −2 D). Conclusions: The cross-cylinder technique may be safely used with predictable results for the correction of astigmatism.

【 授权许可】

Unknown