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"Latar Belakang: Silicone oil (SO) merupakan salah satu substitusi vitreus yang digunakan pasca vitrektomi pars plana (VPP) dalam manajemen ablasio retina rhegmatogen. Beberapa komplikasi penggunaan SO meliputi katarak, peningkatan tekanan bola mata, emulsifikasi, keratopati hingga menurunnya ketebalan dan densitas vaskular makula. Tujuan: Mengetahui perubahan ketebalan makula sentral serta densitas vaskular pleksus superfisial pada pasien ablasio retina rhegmatogen pasca VPP dengan tamponade SO. Metode: 41 pasien ablasio dianalisis dalam studi ini yang menggunakan dua desain: observasional prospektif tanpa pembanding untuk membandingkan efek tamponade SO minggu-1 dengan minggu-4 dan potong lintang untuk membandingkan mata kontralateral dengan minggu-1 pasca tamponade SO. Hasil: Central subfield thickness (CST), superficial vascular density (SVD) serta superficial perfusion density (SPD) pada minggu-1 lebih rendah dibandingkan mata kontralateral (p<0,001). Pada minggu-4 pasca tamponade SO ditemukan peningkatan CST, SVD, SPD dibandingkan minggu-1 meskipun tidak signifikan secara statistik. Pada analisis tambahan, didapatkan usia diatas 50 tahun mengalami kecenderungan penurunan SVD (p 0,033) dan SPD (0,011) dibandingkan kelompok usia muda. Kesimpulan: Tidak didapatkan penurunan ketebalan makula sentral dan densitas vaskular pleksus kapiler superfisial makula di minggu-4 pasca PPV dengan SO. Didapatkan ketebalan makula sentral dan densitas vaskular pleksus kapiler superfisial makula yang lebih rendah di minggu-1 pasca tamponade SO dibandingkan mata kontralateral......Background: Silicone oil (SO) is one of the vitreous substitutes used after pars plana vitrectomy (PPV) for rhegmatogenous retinal detachment (RRD) management. Complications arising from SO include cataracts, increased ocular pressure, emulsification, keratopathy, and decreased macular thickness and vascular density. Objective: To determine changes in central macular thickness and superficial vascular density in RRD patients after PPV with SO. Method: 41 patients were included in this study, which comprises two designs: a prospective observational without comparison to compare the effect of SO tamponade week-1 with week-4 and a cross-sectional design to compare the contralateral eye with week-1 after SO tamponade. Results: Central subfield thickness (CST), superficial vascular density (SVD), and superficial perfusion density (SPD) were lower at week 1 after PPV with SO compared to the contralateral eye (p<0.001). At week 4 after PPV with SO, there was an increase in CST, SVD, and SPD compared to week 1, although not statistically significant. In additional analysis, we found that those aged over 50 had tendencies toward decreased SVD (p 0.033) and SPD (0.011) compared to the younger age group. Conclusion: There was no reduction in central macular thickness or superficial vascular density at week 4 after PPV with SO in RRD patients. Central macular thickness and superficial vascular density were lower on week 1 after SO tamponade compared to the contralateral eye."

"Lithium Titanate LTO adalah salah satu material anoda yang memiliki performa cukup baik karena sifatnya yang zero-strain. Pada penelitian ini, LTO disintesis menggunakan metode sol-gel dan hidrotermal mekanokimia dengan LiOH sebagai sumber ion litium. Silicone Oxycarbide SiOC merupakan material keramik yang disintesis melalui proses pirolisis sederhana prekursor silicone oil. Karbon yang digunakan pada penelitian ini merupakan karbon yang telah dilakukan proses aktivasi sehingga diperoleh karbon aktif dengan ukuran pori yang tinggi. Penambahan karbon aktif ke LTO dilakukan pada saat proses sol-gel, sedangkan penambahan SiOC ke LTO-C dilakukan pada saat proses pembuatan slurry. SEM-EDS menunjukkan perserbasaran dari unsur-unsur pada sampel dimana terdapat Ti, F, Si, O, dan C. Selain itu karakterisasi SEM-EDS juga memperlihatkan adanya peningkatan jumlah karbon pada setiap sampel. XRD menunjukkan adanya fasa spinel LTO dan fasa pengotor seperti TiO2 rutile dan anatase, serta Li2TiO3. Pada pengujian performa EIS, resistivitas rendah menyatakan konduktivitas tinggi. Pada penelitian ini konduktivitas tinggi dimiliki oleh LTO-1 C/SiOC. Selain itu dilakukan pengujian performa CV dan CD dimana diperoleh kapasitas spesifik tertinggi yaitu pada sampel LTO-5 /SiOC.

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Lithium Titanate LTO is one of the anode material that has good performance because of its unique properties which is zero strain. In this study, LTO was synthesized using sol gel method and mechanochemical hydrothermal with LiOH as the source of lithium ion. Silicone Oxycarbide SiOC is a ceramic material synthesized through a simple pyrolysis process of silicone oil precursors. Carbon used in this study is a carbon activated process so that activated carbon is obtained with high pore size. The addition of activated carbon to the LTO is done during the sol gel process, while the addition of SiOC to LTO C is performed during the slurry making process. SEM EDS shows the extent of the elements in the sample where Ti, F, Si, O, and C. are present. Also, SEM EDS characterization also shows an increase in the amount of carbon in each sample. XRD shows the presence of LTO spinel phase and impurity phases such as TiO2 rutile and anatase, and Li2TiO3. In EIS performance testing, low resistivity expresses high conductivity. In this research, high conductivity is owned by LTO 1 C SiOC. In addition, CV and CD performance tests were performed where the highest specific capacity was obtained in the LTO 5 SiOC samples."