Narrow cylinder containing psychoactive material, typically tobacco, that is rolled into thin paper for smoking.

Juvenile xanthogranuloma (JXG)

Rare benign fibrohistiocytic lesion and a type of granulomatous process most commonly on the skin. M/C non-Langerhans cell histiocytic (non-LCH) disorder of childhood History It was first described by HG Adamson in 1905. Later, in 1912, JER McDonagh described 5 new cases of the disease. In 1950s, Helwig and Hackney described 140 cases of the…

Spheroidal keratopathy

Spheroidal keratopathy, aka climatic droplet keratopathy, actinic keratopathy, Biettiā€™s band-shaped nodular dystrophy, Labrador keratopathy, is an acquired corneal degeneration caused by chronic exposure to solar irradiation.

Corneal dellen

Small saucer-like excavations at the margin of the cornea caused by interruptions of the tear film and local dehydration of the cornea. Complication: Corneal perforation Aetiology Usually following processes which produce a paralimbal elevation: Induce a localized break in the precorneal oily layer of the tears which, in turn, causes a localized dehydration and thinning…