My 23 year old Quaker, Stuart, started with the left eye. But now his right eye is slowly starting to go.
Very heartbreaking to watch his sight decline. He still eats and drinks and gets around his cage okay. But his visual decline is quite noticeable these days.
Wow, Stuart is a good age! Our Bonnie is only 9, so we’re not in the same situation as you. But if Stuart seems happy & still eating, drinking & getting around OK I guess there’s not much you can do apart from keeping him comfortable and safe.
Sorry that Stuart's vision is diminishing from the cataracts. I've never experienced that problem with any of my parrots. Some changes may have to be made in Stuart's environment to better accommodate him but I imagine he can continue to enjoy a good life.