Department of Ophthalmology, Peking University Third Hospital, Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, 49 North Garden Rd, Haidian District, Beijing, 100191, China.
BMC Ophthalmol. 2024 Aug 5;24(1):325. doi: 10.1186/s12886-024-03593-5.
To analyze the clinical outcomes after topography-guided femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) with Phorcides Analytic Engine (PAE) algorithm or Custom-Q FS-LASIK for myopia with nonastigmatic eyes.
In this retrospective study, a total of 90 eyes with myopia without manifest astigmatism (82 patients) were included. All surgeries were performed by topography-guided FS-LASIK planned with a PAE algorithm (42 eyes) or Custom-Q system (48 eyes). Refractive, visual outcomes and corneal aberrations were compared between the two groups.
At 6 months postoperatively, the postoperative uncorrected distance visual acuity (UDVA) was 20/20 or better in 42 eyes (100%) in the PAE compared with 44 eyes (92%) in Custom-Q (P = .120). The postoperative UDVA of 20/16 or better was measured in 92% of eyes in the PAE group and 81% of eyes in the Custom Q group (P = .320). Postoperative corrected distance visual acuity, manifest refractive spherical equivalent and refractive astigmatism were similar between the two groups (P > .05). The postoperative optical path difference (OPD) and Strehl ratio (SR) were significantly better in the PAE group compared with the Custom Q group.
Topography-guided FS-LASIK with PAE algorithm or Custom Q demonstrated similar refractive efficacy and predictability. PAE for the patients with zero manifest astigmatism demonstrated better results in correcting corneal aberrations.
分析非散光眼近视患者采用 Phorcides 分析引擎(PAE)或 Custom-Q 飞秒激光角膜原位磨镶术(FS-LASIK)行 topography-guided FS-LASIK 手术后的临床效果。
本回顾性研究纳入 82 例(90 只眼)无显斜视的近视患者。所有手术均采用基于地形图的 FS-LASIK,其中 42 只眼采用 PAE 算法设计,48 只眼采用 Custom-Q 系统设计。比较两组患者的屈光、视觉效果和角膜像差。
术后 6 个月,PAE 组 42 只眼中有 42 只眼(100%)的未矫正远视力(UDVA)达到 20/20 或更佳,而 Custom-Q 组有 44 只眼(92%)(P=0.120)。PAE 组术后有 92%的眼达到 20/16 或更佳的 UDVA,而 Custom-Q 组为 81%(P=0.320)。两组术后的矫正远视力、显效屈光球镜等效值和屈光性散光均相似(P>0.05)。PAE 组术后的光学差(OPD)和斯特列尔比(SR)明显优于 Custom-Q 组。
基于地形图的 FS-LASIK 采用 PAE 算法或 Custom-Q 均有相似的屈光效果和预测性。对于零显斜视患者,PAE 可更好地矫正角膜像差。