its not a cataract. a cataract is inside of your eye and generally cannot be seen or photographed from the outside except with the use of special equipment.
its probably a pinguecula:
http://www.opt.indiana.edu/v543/bc/docs/phys1b.html
please only look at the top image in that link. the bottom image is of a type of cataract, which does not apply in this case.
if this is what your husband's bubble looks like, he's right its no big deal.
a pinguecula is a
clearClear by design
Clear eyes
Clear eyes acr
Clear eyes clr
Clear-atadine
Clear-atadine children's-to-yellow lesion on the surface of the bulbar conjunctiva, usually from long term UV exposure. it is not cancerous, it is not dangerous. it can be surgically removed if:
1) it is cosmetically bothersome
2) if it is causing foreign body sensation (feels liks something is in there)
3) if it grows over onto the cornea and impedes or affects vision. if this is the case, we no longer call it a 'pinguecula', we start calling it a 'pterygium':
http://www.images.md/users/Image_visitor.asp?ID=ATOPH01-03-22-002A&chapID=ATOPH01%2D03%2D22&fp=2&tf=23&showstyle=1&pagesize=12&contribid=
regardless, your husband needs an eye examination from an optometrist (if he wants to find out what it is) or an ophthalmologist (if he knows he wants it removed)
I will endeavour to get him to see an optometrist at the very least.
Thank you again for your advice.