Spark Therapeutics has created a first-of-its-kind gene therapy treatment for inherited blindness, called Luxturna, and the FDA approved it last month. One caveat: the injections cost $850,000 USD ($425,000 for each eye), making it one of the most expensive treatments in the world. However, it is the first gene therapy that treats an inherited condition, and has proven to be effective for those with a rare form of inherited blindness that is estimated to affect less than 2,000 people in the US. Continue reading for more weird things that actually exist.