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Yehliu Honeycomb Rock loacted in Yehliu Geopark . Honeycomb weathering, sometimes known as fretting, stone lattice, stone lace, miniature tafoni, and cavernous weathering, is a form of weathering common to arid or coastal granites, sandstones, and limestones.
Photo with 205 notes
Papakōlea Beach (also known as Green Sand Beach or Mahana Beach) is a green sand beach located near South Point, in the Kaʻū district of the island of Hawaiʻi. It gets its distinctive coloring from the mineral olivine, found in the enclosing cinder cone.
Photo credit: Rebecca Green
Photo with 123 notes
Penetrating keratoplasty in a patient with corneal ulcer. Keratoplasty is the surgical replacement of an opaque portion of the cornea with a piece of cornea having the same size and shape. Also called a corneal graft.
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A normal brain(right) compared to a brain afflicted with Alzheimer’s disease
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Penetrating ocular trauma. This 37 year-old-male was using a compressed air wire wheel brush when a wire came loose and was lodged in the cornea. He was not wearing safety glasses. The wire was removed in the operating room where it was found to penetrate fully through the cornea and required one corneal suture.
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