I assume you are talking about incisors- the front teeth? Care of those are quite different from the back teeth- molars. If his teeth are overgrowing- maloccluded it can prevent him from eating properly. The simplest treatment is to have the teeth trimmed. This is typically a quick easy procedure that a rabbit exerienced vet can do- and can even show you how to do (although I am not sure you want to be the bad guy). It does not hurt- and it does not require sedation- just the proper tool and knowledge of how-to. The front teeth are easily accessable and that is why it is so different than dealing with molars.
In severe cases the incisors and peg teeth can be extracted- but I would make sure a rabbit saavy vet recommended the procedure before I would consider it.
One of my bunnies has slightly crooked lower teeth- but they are not a problem because they are still worn properly as the are pushed together as opposed to growing off the the back, side or front.
If the front teeth are overgrowing- pet insurance will most likely not cover any portion of treatment or surgery as it is considered a genetic condition. I am not sure what type of rabbit Binny is- but Netherland dwarfs are extremely prone to incisor malocclusion. The policies details can vary from state to state depending on state laws- but I still find it unlikely that VPI will cover what is considered to be a genetic condition and if you wait to get insurance and bring him in for his first visit and he presents with that problem- it will also be pre-existing condition. VPI does cover dental issues- as many of our members here have had success with dental claims and treatment.
It could also not be the teeth and could be the eye itself or the tear duct.