Brief Description: The orthoptist working in a pediatric ophthalmology practice must be able to recognize when a presenting sign or symptom is an indicator of serious underlying neuro-ophthalmic disease warranting further investigation. Signs such as new onset strabismus, nystagmus, or symptoms such as decreased vision may clinically resemble childhood-onset horizontal strabismus, idiopathic infantile nystagmus, or amblyopia, when in fact they are markers of nervous system ma...