gecko losing weight fast

Hello my Leo is a little over 8 years old and over sometime I've noticed she lost a bit of weight. I usually feed my two Leo's at least twice a week and just put the meal worms in a bowl and don't often stick around to watch them eat as much as I used to. Usually have no issue and they both remain nice and plump. When I noticed she was a bit smaller I lifted up the carpet in her tank and found many meal worms hiding underneath. This is how I discovered she is completely or almost completely blind now. Idk if it is old age or not but her eyes have gotten very gray. But i began hand feeding her for about two weeks with no problems. Then after a feeding she for some reason regurgitated all the meal worms and I have not gotten her to eat in the week and a half since that incident. Since then she seems to be significantly skinnier and I am at a loss of what to do. At first just touching them to her mouth would cause her to take them but now she just turns away. Any advice would be much appreciated. Thanks

Also just want to note that she is in the same 30 gallon breeder as my other female. There is a divider across the middle so they never come in contact with each other so I don't think that's an issue as they have been this way for at least 6 years. I only bring it up to ask if you think I should separate them in case she is sick? I do not want my other Leo contracting anything

Can you give us a little more info about her setup by filling out this info:

http://geckoforums.net/f130-health-medications/70912.htm

If she's in a separate enclosure from the other geckos I don't think I'd be worried about anything contagious but a vet visit might help get to the bottom of what's going on.