On 12/06/2013 08:24 PM, Gene Heskett wrote: > Hence the cataract warnings that seem to surround the long IR CO2 models. > Unforch I do have some already.
Cataract inducing lasers are at ~1500nm (often Yag type lasers). The 1.5um is small enough to pass through the cornea and will induce coagulation in the lens (making it milky-white). Your cornea also will take damage, but the bulk energy at these wavelengths (1..2um) are absorbed by the lens. Longer wavelengths are readily absorbed by water and will cause the tearfilm to boil off. If any appreciable amount of energy still passes onto the anterior chamber (between lens and cornea) then the water there will heat. Too long exposure will cause the lens to coagulate (at about 55..60 degrees C) and therefore also induce a cataract. When you get into such situation, you'd be swearing and grumbling that you /should/ have been wearing eye protection. ;-) Do not mess with your eyes. (full disclosure: I workes at a hospital's department of ophthalmology for 10 years). -- Greetings Bertho (disclaimers are disclaimed) ------------------------------------------------------------------------------ Sponsored by Intel(R) XDK Develop, test and display web and hybrid apps with a single code base. Download it for free now! http://pubads.g.doubleclick.net/gampad/clk?id=111408631&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
