Alterations in optical coherence tomography and optical coherence tomography angiography findings in children with partial biotinidase deficiency.

Objectives: The aim of the study was to investigate whether retinal neurovascular structural impairment in children with partial biotinidase deficiency (BD) could be detected early via optical coherence tomography (OCT) and OCT angiography (OCTA).

Methods: Eighty patients with partial BD and 80 control cases without any known systemic or ocular diseases were enrolled in this prospective study. Retinal neurovascular structures in the macular and optic disc regions were examined in using OCT and OCTA.

Tolerating subretinal fluid in the treatment of neovascular age-related macular degeneration with intravitreal aflibercept.

Objective: To compare the anatomical and functional outcomes of intensive and relaxed intravitreal aflibercept regimen in the management of neovascular age-related macular degeneration.

Methods: The medical records of 50 eyes of 50 patients with treatment-naive neovascular age-related macular degeneration, who underwent intravitreal aflibercept therapy in the Retinal Department of University of Health Sciences Okmeydanı Training and Research Hospital (Istanbul, Turkey), were retrospectively reviewed. The demographic features and best-corrected visual acuities at baseline and at 1st-, 2nd-, 3rd-, 4th-, 6th-, 10th- and 12th- months, optical coherence tomography measurements, presence of intraretinal fluid, subretinal fluid and intraocular pressure values were studied.

Evaluation of photoreceptor outer segment length in hydroxychloroquine users.

Objective: This study aims to evaluate the photoreceptor outer segment (PROS) length in patients who use hydroxychloroquine (HCQ) prior to the development of retinopathy.

Methods: In this prospective, single-centre, comparative study, 44 patients using HCQ for ≥5 years, 30 patients using HCQ <5 years, and 45 age- and sex-matched healthy controls were enrolled. The participants underwent a detailed ophthalmologic examination, spectral-domain optical coherence tomography (SD-OCT) imaging, and 10-2 automated visual field testing.

Assessment of the extended Koopmans' theorem for the chemical reactivity: Accurate computations of chemical potentials, chemical hardnesses, and electrophilicity indices.

The extended Koopmans' theorem (EKT) provides a straightforward way to compute ionization potentials and electron affinities from any level of theory. Although it is widely applied to ionization potentials, the EKT approach has not been applied to evaluation of the chemical reactivity. We present the first benchmarking study to investigate the performance of the EKT methods for predictions of chemical potentials (μ) (hence electronegativities), chemical hardnesses (η), and electrophilicity indices (ω).