Well if you have serious doubt regarding Binocular vision anamolies ,Better consultant a Paediatric ophthalmologist and strabismologist for detailed clinical as well Bynocs evaluation
Near disturbance especially with long screen hours are very common asthenopia , vergence and accomodation problems in young generation these days..
Next Steps
consultant Paediatric ophthalmologist and strabismologist
Health Tips
needs detailed BVA analysis