Welcome to talk budgies. Sorry your little friend has a serious issue with an eye. As has been said, your regular vet can maybe consult an avian specialist, it is certainly apparent that professional help is needed to get this going in the
right direction. Prayers for treatment and recovery.
He came down from Heaven unto this earth below
He came down from glory and praises untold
He came down to man fashioned in their way
He came down to rescue, He came down to save