Evolution of the retinal black sunburst in sickling haemoglobinopathies.

Macular and perimacular vascular remodelling sickling haemoglobinopathies.

The posterior pole vasculature of 100 patients with different sickling haemoglobinopathies was studied prospectively over a period of three years. Various abnormalities of the posterior pole vasculature were seen in 29 per cent of the patients. Continuous remodelling of the macular and perimacular vasculature occurred. Visual acuity was variably affected and sometimes remained intact.

Spontaneous peripheral chorioretinal neovascularisation in association with sickle cell anaemia.

Chorioretinal neovascularisation was noted in the midperipheral fundus of a young black girl with sickle cell anaemia. Rapid-sequence fluorescein angiography showed choroidally fed neovascularisation in the centre of a large black sunburst (chorioretinal scar). We suspect that a massive midperipheral retinal haemorrhage from the sickle cell disease caused the sunburst and altered Bruch's membra...

New optical coherence tomography fundus findings in a case of beta-thalassemia

Patients with beta-thalassemia may present with an acquired diffuse elastic tissue defect due to degeneration of elastic tissue along with vaso-occlusive findings in the retinal microvasculature. Here we report the case of a patient with granular-like accumulation presenting as black sunburst lesions detected by optical coherence tomography (OCT). A 38-year-old man with beta-thalassemia interme...

Diagenetic Evolution of Mudstones: Black Shales to Laminated Limestones, an Example from the Lower Jurassic of SW Britain

Application of Pd-Substituted Ni-Al Layered Double Hydroxides for the Hydrogen Evolution Reaction

Clean production of hydrogen from electrochemical water splitting has been known as a green method of fuel production. In this work, electrocatalytic hydrogen evolution reaction (HER) was investigated at new prepared layered double hydroxides (LDH) in acidic solution. NiAl/carbon black (CB) LDH was monitored using x-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, scannin...