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首页> 外文期刊>Journal of refractive surgery >Removability of a small aperture intracorneal Inlay for presbyopia correction
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Removability of a small aperture intracorneal Inlay for presbyopia correction

机译:小孔角膜内镶嵌物的可移动性,用于矫正老花眼

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Purpose: To evaluate the safety of the corneal inlay removal procedure and the reversibility of visual acuities, corneal topography, and corneal biomicroscopy changes in a series of cases. Methods: Ten cases implanted with one of three versions of the AcuFocus Kamra Inlay (ACI 7000, 7000T, and 7000PDT; AcuFocus, Inc., Irvine, CA) were followed for a minimum of 6 months after corneal inlay removal. Results: The reason for removal was related to subjective dissatisfaction with visual symptoms (8 of 10 patients) such as night glare, photophobia, starburst, blurry vision, and halos. One case of removal was related to inadvertent thin flap and the final case was related to insufficient near vision. Mean uncorrected distance visual acuity (UDVA) and uncorrected near visual acuity (UNVA) was 0 ± 0.1 logMAR (Snellen 20/20) and 0.5 ± 0.2 logMAR (Snellen 20/40), respectively, preoperatively and 0.1 ± 0.1 logMAR (Snellen 20/25) and 0.5 ± 0.1 logMAR (Snellen 20/63), respectively, 6 months after corneal inlay removal. Mean corrected distance visual acuity (CDVA) and corrected near visual acuity (CNVA) was 0 ± 0.1 logMAR (Snellen 20/20) and 0 ± 0.1 logMAR (Snellen 20/20), respectively, preoperatively and 0 ± 0.1 logMAR (Snellen 20/20) and 0.1 ± 0.1 logMAR (Snellen 20/25), respectively, 6 months after corneal inlay removal. Mean root mean square (RMS) higher-order aberration (HOA) was 0.50 ± 0.12 (range: 0.30 to 0.70) preoperatively and 0.69 ± 0.14 (range: 0.48 to 0.95) 6 months after corneal inlay removal (P .8). Weak positive correlation was found between Δt Implant-Removal (Δt I-R), RMS spherical, coma, and HOA at 6 months (Δt I-R vs RMS spherical was r = 0.2, r2 = 0.5, P .7; Δt I-R vs RMS coma was r = 0.8, r 2 = 0.6, P .3; and Δt I-R vs HOA r = 0.8; r2 = 0.6, P .9). Conclusion: This study suggests that after removal of the corneal inlay, corneal topography and corneal aberrometry are not permanently affected. In more than 60% of patients, CNVA, CDVA, UNVA, and UDVA were similar to the preoperative value.
机译:目的:在一系列病例中,评估角膜嵌体去除程序的安全性以及视力,角膜地形图和角膜生物显微镜变化的可逆性。方法:十例植入了三种版本的AcuFocus Kamra嵌体(ACI 7000、7000T和7000PDT; AcuFocus,Inc.,Irvine,CA)中的一种,随访至少6个月。结果:去除的原因与主观上对视觉症状(10例中的8例)的不满意有关,如夜间眩光,畏光,星暴,视力模糊和晕圈。一例切除与疏忽性皮瓣有关,最后一例与近视力不足有关。术前平均未矫正远视力(UDVA)和未矫正近视力(UNVA)分别为0±0.1 logMAR(Snellen 20/40)和0.5±0.2 logMAR(Snellen 20/40),术前为0.1±0.1 logMAR(Snellen 20) / 25)和0.5±0.1 logMAR(Snellen 20/63),分别在去除角膜嵌体后6个月。术前平均矫正距离视力(CDVA)和矫正近视力(CNVA)为0±0.1 logMAR(Snellen 20/20)和0±0.1 logMAR(Snellen 20/20)和0±0.1 logMAR(Snellen 20) / 20)和0.1±0.1 logMAR(Snellen 20/25),分别在去除角膜嵌体后6个月。术前平均根均方根(RMS)高阶像差(HOA)为0.50±0.12(范围:0.30至0.70)和6月±0.69±0.14(范围:0.48至0.95)(P <.8)。在6个月时发现Δt植入物去除(ΔtIR),RMS球形,昏迷和HOA之间存在弱正相关(ΔtIR与RMS球形的r = 0.2,r2 = 0.5,P <.7;ΔtIR与RMS昏迷是r = 0.8,r 2 = 0.6,P <.3;和ΔtIR vs HOA r = 0.8; r2 = 0.6,P <.9)。结论:这项研究表明,去除角膜嵌体后,角膜地形图和角膜像差测量不会受到永久性影响。在60%以上的患者中,CNVA,CDVA,UNVA和UDVA与术前值相似。

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