i don't think contact lenses can help with a lazy eye. Lazy eye is more of a muscle issue, but contacts are specifically for vision. If you are still a child, lazy eye can be treated with a patch over the eye but you need a Opalthalmologist to do it. I have amblyopia and wear prism glasses to correct it. It really works for me.
Firstly, you should make sure that you are with lazy eye or strabismus. Many people confuse strabismus with a lazy eye, but lazy eye and strabismus are not the same condition. Strabismus is not correctable by contact lenses. What's more, you should ask your doctor for advice before you wear contacts or when you get contacts. Pay attention to go for a really breathable lens when you get contacts. The choice of contact lens material is really important. And remember that contact lenses should be an option.
The colloquialism "lazy eye" is frequently used to refer to amblyopia, is a disorder of the visual system that is characterized by a vision deficiency in an eye that is otherwise physically normal, or out of proportion to associated structural abnormalities of the eye. It happens in early childhood. If you are more than 9 years old, even your vision is very bad, it is not amblyopia. If you really suffer from lazy eye, I think you should follow the doctors' suggestions. It is better to be cured with their help. And contacts are not good for children, let alone you have a lazy eye. Hope you'll be better soon.
It totally depends on your eyes condition. Compared with the normal glasses, the contact lenses can give a better visual result and has a higher requirement to the eyes. The people who have eye disease, such as crusty eyes, glaucoma, keratitis, are not suitable to wear contact lenses. Luckily, the lazy eyes don't belong to this range. The lazy eyes mean you don't see the same thing as well as the good eyes, and it only can be treated well before 6. Hence, you had better go to consult the eye doctor to ensure whether you can wear contact lenses with lazy eyes.