Bhashya
तत्कृता इयं भ्रान्तिः- आत्मनो दृष्टिः परिलुप्यते इति ॥
In plain words
That is exactly where the confusion comes from—the idea that the Self's power to see could ever be lost.
Close to the Sanskrit
This confusion is caused by that: "The vision of the Self is destroyed"—so it goes.