Purpose Determining IOL power is an important step in achieving the desired postoperative refractive target, but this determination remains challenging, as currently the used formulas were developed using IOL power calculations derived from adults. Patients and Methods This is a retrospective analytical study with the period of June 2018 to May 2019. All of the data were taken from medical records in referral tertiary eye hospital in Indonesia. All type of cataracts underwent uncomplicated surgeries and in-the-bag IOL implantation were included in this study, while aphakia, secondary IOL implantation, primary sulcus implantation, and history of ocular disorders were excluded. The data were analyzed using Wilcoxon sign-rank, paired t, and Kruskal–Wallis tests. Results Sixty-seven patients (106 eyes) were found to meet the inclusion criteria, average age was 7.35 ± 4.61 years (1.00 to 17.00 years). Average targeted refraction was 1.69 ± 2.06 D (−0.38–+6.99 D), and spherical equivalent (actual postoperative refraction) was −0.90 ± 1.45 D (−4.38 to +2.75 D). There was statistically significant difference between preoperative targeted refraction and actual postoperative refraction (p < 0.001). Mean absolute prediction error (APE) in general was 1.34 ± 1.18 D, 1.22 ± 0.88 D (in short eyes), 1.52 ± 1.37 D (in moderate eyes), and 0.69 ± 0.52 D (in long eyes) (p = 0.202). Mean APE in age group <7 years old was 1.27 ± 1.18 D and ≥7 years-old was 1.42 ± 1.19 D (p = 0.429). Conclusion SRK/T formula is fairly accurate in calculating IOL power in pediatric cataract surgery. Mean APE in this study was within the range of accurate mean APE in pediatric patients despite differentiated axial length and age.

Background: The needs of refractive surgery with laser to correct refractive error (myopia, hyperopia, and astigmatism) have become more demanded. Eventhough the procedures can produce expected efficacy and safety, modification in corneal surface can affect optical and visual quality, resulting in visual distortion and artefacts (glare, halo, starburst) called high order aberrations (HOA). Objective: To report the differences of high order aberration before and after corneal ablation and refractive lenticule extraction surgery. Methods: This is an analytical retrospective observational study which conclude 60 patients (115 eyes) who underwent laser in situ keratomileusis (LASIK), femtosecond laser-assissted laser in situ keratomileusis (FS-LASIK), femtosecond lenticule extraction (FLEx), and small-incision lenticule extraction (SMILE) during the periode of January 2017 to August 2018. Results: Of 115 eyes, the mean of pre-operative high-order abberations were divided into four groups: LASIK was 7.27±3.85, FS-LASIK was 7.06±5.77, FLEx was 6.43±3.14, and SMILE was 3.73±1.41. Trefoil was the most common high-order abberations in pre-operative data of LASIK, FLEx, and SMILE (50.0%, 56.25%, and 51.72% respectively), while coma was mostly found in FS-LASIK (46.67%). Coma was the most common finding in first and third month after surgery. High-order aberrations between first and third month after surgery were not statistically significant different (p=0.465, p=0.889, p=0.263, and p=0.508 respectively). Conclusion: All types of procedures of corneal ablation and refractive lenticule extractions surgeries are effective and safe in correcting refractive errors. There were no differences of post-operative high- order aberrations in all types of procedures.