From poking their own eyes, to drinking a patient's vomit, some extremely passionate scientists have done pretty outrageous things to themselves in the name of science.


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Sources:
http://www.newtonproject.ox.ac.uk/view/texts/normalized/NATP00004
http://aty.sdsu.edu/vision/others.html
http://www.lib.cam.ac.uk/exhibitions/Footprints_of_the_Lion/private_scholar.html
http://eyewiki.aao.org/Solar_Retinopathy

https://pubs.acs.org/subscribe/archive/tcaw/13/i04/pdf/404chronicles.pdf
http://publicdomainreview.org/2014/08/06/o-excellent-air-bag-humphry-davy-and-nitrous-oxide/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4439684/#sec1-3title

http://alphahistory.com/pastpeculiar/1804-med-student-drinking-black-vomit/
https://collections.nlm.nih.gov/ext/mhl/2554015R/PDF/2554015R.pdf
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2441371/pdf/tacca00106-0113.pdf

https://www.newyorker.com/tech/elements/demon-core-the-strange-death-of-louis-slotin
http://nerdist.com/tickling-the-dragons-tail-the-story-of-the-demon-core/
https://xkcd.com/radiation/
https://www.nrc.gov/reading-rm/basic-ref/glossary/lethal-dose-ld.html

http://mterasaki.us/etc/forssman.pdf
http://www.annalsthoracicsurgery.org/article/0003-4975(90)90272-8/pdf

Image Sources:
https://commons.wikimedia.org/wiki/Category:Werner_For%C3%9Fmann#/media/File:Werner_Forssmann.jpg
https://en.wikipedia.org/wiki/Werner_Forssmann#/media/File:Werner_Forssmann_nobel.jpg
https://upload.wikimedia.org/wikipedia/commons/4/4d/Harry-K-Daghlian.gif
https://commons.wikimedia.org/wiki/File:Tickling_the_Dragons_Tail.jpg
https://commons.wikimedia.org/w/index.php?search=demon+core&title=Special:Search&profile=images&fulltext=1&searchToken=7flitf5fa448whcbbjy4p2qjw#/media/File:Slotin_accident_mockup-11.jpg
https://en.wikipedia.org/wiki/Louis_Slotin#/media/File:Slotin_Los_Alamos.jpg
https://en.wikipedia.org/wiki/File:YellowFeverVirus.jpg
https://commons.wikimedia.org/w/index.php?search=Sir+Humphrey+Davy&title=Special:Search&go=Go&searchToken=2vgthm6rdc5x1bfnp8933abft#/media/File:Sir_Humphrey_Davy_1849_RGNb10408769.09.tif
https://commons.wikimedia.org/wiki/Category:Nitrous_oxide#/media/File:Nitrous-oxide-3D-balls.png
https://commons.wikimedia.org/wiki/File:Sir_Humphry_Davy,_Bt_by_Thomas_Phillips.jpg
https://commons.wikimedia.org/wiki/Isaac_Newton#/media/File:Sir_Isaac_Newton_by_Sir_Godfrey_Kneller,_Bt.jpg
https://commons.wikimedia.org/wiki/File:Bodkin_MET_224402.jpg
https://commons.wikimedia.org/wiki/Isaac_Newton#/media/File:Isaac_Newton,_English_School,_1715-20.jpg