This seems to be a common thing with bhps. iv seen a few animals of keepers i know get this problem, the times iv seen it both eyes were completely cloudy nothing like a shed more of a solid milky white/blue eventaully getting thicker and swollen, personally iv seen them up to 1cm. Quite shocking. if you've seen it in its later stage you would feel very sorry for the animal like I did. Also recently a snake was posted on here with one eye like this, not sure how that snakes going, but it seems to be common thing within the species and the animals that have had the problem that Iv seen were kept in poor living conditions (not saying yours have been.) high humidity, wet substrate, fesis in part of the enclosure etc. the other snake posted on aps had some scale problem on its face so its almost deffinatly linked to improper husbandry. You deffinatly need to keep watch of this problem because it goes from a milky eye (looks like its i shed) to an extremely swollen eye till the animal barely being able to breath, struggling loudly.
The animals that died of this problem never got to a vet because the owners were to consintratred on making money, unfortunatly. so I'm not sure if it can be reversed or if its fatel even if treated........has anyone had this problem with bhps before? Iv never heard or seen it in womas, so it might be linked directly to bhps, fluid on the eye eventually effecting the snakes breathing it's not fun to watch I would get someone to look at it that knows their stuff or get it to a vet because if it is this problem it will get disturbingly bad, resulting in a dead snake but a very slow death, its a very long process. I'm hopeing for your sake its just a retained eye cap, but always cheak its sheds to make sure it's eye caps have come off straight away.......