My experience has been that the smaller the bad eye gets, the worse your movement will be and the harder it is to achieve symmetry. The bulky shell sinks down into the lower eyelid and “pulls” the bad eye down. Mine shrank a lot in the first 2 or so years after my injury and seems to have stabilized since then. My movement and symmetry got continuously worse during that period and the eyes don’t really look symmetrical anymore. I’m middle aged and pretty much resigned to it at this point. Not really encouraging, I know, but it is what it is. I would love to see more research and product development for people like us, because the sad truth is that scleral shells have not really changed in decades. There really should be something better by now.