Wednesday, August 24, 2011

Green laser pointers

Green laser pointers grab attention because unlike a red laser pointer, the green beam itself can be seen in mid-air in dark conditions. They are very bright and very powerful. They can also be dangerous.

NY Times article

Green laser video

Wednesday, August 10, 2011

Illegal contact lenses

Contact lenses with colors can be fun, but there are reports of expired and even recycled lenses being sold without a prescription. A colleague recently treated a young woman who was injured by such a lens. He was interviewed by WSB TV.

Link to WSB Atlanta news story