At four months, occasional eye misalignment is relatively common as your baby's eye muscles and visual system are still developing. This typically improves and resolves by four to six months of age. If the misalignment is constant, seems to be worsening, or persists beyond six months, it is best to consult your pediatrician. They can evaluate your baby and refer you to a pediatric ophthalmologist if needed. There is no need to panic, as this is often a normal developmental phase, and no immediate medical treatments are required. Simply mention it at your baby's next routine check-up.