The rare formation is known as a lenticular cloud and lasted for about an hour. Bursa lies at the base of a mountain range, which makes seeing this rare type of cloud more likely.

Benjamin Bergstrom, DVM, MS, DACVO, talks about causes and treatment options for these lenticular diseases in cats and dogs Benjamin Bergstrom, DVM, MS, DACVO, owner of The Eye Vets in Nashville, ...

Executive Editor David Carnoy has been a leading member of CNET's Reviews team since 2000. He covers the gamut of gadgets and is a notable reviewer of mobile accessories and portable audio ...

Aims To describe a simple surgical technique consisting of opening the vertical graft-host junction (GHJ) to manage high astigmatism following deep anterior lamellar keratoplasty (DALK) and to report ...

The optical treatment of the progressive myopia and irregular astigmatism associated with keratoconus is fitting with a contact lens, usually a specialty or scleral hard contact lens. While ...

The study investigators identified a significant rise in refractive and corneal astigmatism prevalence among Hong Kong children during the COVID-19 pandemic. Refractive astigmatism prevalence ...

Purpose: To assess the frequency of corneal astigmatism before cataract surgery in a Brazilian sample. Methods: This clinic-based cross-sectional study was conducted at the Bonsucesso Federal Hospital ...

1 Department of Ophthalmology, Medical University of Vienna, Vienna, Austria 2 Center for Biomedical Engineering and Physics, Medical University of Vienna, Vienna, Austria Correspondence to: Oliver ...