Prescribe any glasses required and allow the patient time to settle into them. Use occlusion to treat any amblyopia present and encourage alternation. Where appropriate, orthoptic exercises (sometimes referred to as Vision Therapy) can be used to attempt to restore binocularity. Where appropriate, prismatic correction can be used, either temporarily or permanently, to relieve symptoms of double vision. In specific cases, and primarily in adult patients, botulinum toxin can be used either as a permanent therapeutic approach, or as a temporary measure to prevent contracture of muscles prior to surgery
Where necessary, extra-ocular muscle surgery, like strabismus surgery, which is a surgery where the doctors physically move the muscle that is making the eye contract. This can be undertaken to improve cosmesis and, on occasion, restore binocularity. Etymology
The term "esotropia" is ultimately derived from the Ancient Greek ἔσω ésō, meaning “within”, and τρόπος trópos, meaning “a turn”. References
External links

"Squint / Strabismus". Parallel Vision Problems. British and Irish Orthoptic Society. "Esotropia". EyeWiki. American Academy of Ophthalmology.
Drug Information Portal. U.S. National Library of Medicine.