Subthreshold nanosecond laser therapy for chronic central serous chorioretinopathy: A prospective study.

Purpose: To investigate the morphologic and functional outcomes of nanosecond subthreshold (ST) laser treatment for patients with chronic central serous chorioretinopathy (CSC).

Methods: In this prospective study, 44 patients were treated with the ST nanosecond laser with a follow-up period of 12 months. All target variables were measured at 1, 3, 6 and 12 months after the first laser treatment.

Macular vascularisation changes analysed using OCT angiography after successful rhegmatogenous retinal detachment repair.

Aim: To analyse the macular vascularisation changes analysed using optical coherence tomography angiography (OCTA) after successful rhegmatogenous retinal detachment (RRD) repair by comparing gas silicone oil and macula-on macula-off.

Methods: This retrospective data collection included 77 eyes with RRD that underwent pars plana vitrectomy (PPV) and gas or silicone oil tamponade. We performed an OCTA during the postoperative control between 6 and 24mo after the last surgery and evaluated the main parameters measured by OCTA: foveal avascular zone (FAZ) and parafoveolar vascular density (PVD) in the superficial capillary plexus.

Interconversion of Specific and Equivalent Conductivity of Ions in Electrolyte Solution: Effects of High Ionic Valence and Temperature.

In a recent article (Fraenkel, D. , , 138957), an argument was made and advanced that the derivation of the equivalent conductivity of ionic solutions, Λ, directly from the specific conductivity, , is correct only for symmetric strong electrolytes; for asymmetric electrolytes, a scientifically more sound way of deriving Λ from is through the ionic conductivities, i.e.