diagnosis, and prognostication of ophthalmic disease and even systemic diseases. Ophthalmic imaging, and in particular retinal imaging is unique in that it allows direct evaluation of blood vessels, neural tissue, and connective tissue in vivo with excellent image quality and without the need...
The earliest writing brush that has been found is a relic of the Warring States Period (476 B.C. – 221 B.C.). From that time onwards, the brush has evolved into many forms. The nib can be made from __...