I wonder if there's some list out there of things that we've gotten from the space program. All I know of is Velcro and I think Teflon.
Tax dollars at work: laser for space find Cataracts earlier.
The new technique uses dynamic light scattering (DLS) to detect small proteins called alpha crystallins in the eye's lens. These are known to play a natural role in preventing cataracts from forming by sticking to larger proteins and stopping them from unraveling. If the larger proteins cannot unravel, then they cannot stick together.