Removing protein from hard contact lenses is so hard.

I've been wearing hard contact lenses for about two years, but lately my vision has been getting noticeably blurry. It's fine when I put them in in the morning, but by lunchtime, my vision gets hazy, as if there's oil on the lenses. ㅠㅠ

I make sure to remove protein from the lenses every morning and evening using a dedicated cleaner, but maybe I'm just not very good with my hands, because it feels like I can't clean them perfectly. I'm actually afraid of scratching them if I scrub too hard... I'm worried because I heard that if the protein isn't removed properly, it can cause eye inflammation.

I looked it up, and it seems many people these days use machines that remove protein from hard lenses using ultrasound without touching them. Is it really less painful on the eyes than hand washing? Since these are expensive lenses, I want to take good care of them so I can use them for a long time. If anyone has actually seen results, please share some tips! Haha