The differential diagnosis for what could be causing an abnormal reflex ranges in severity from causes that will resolve on their own to pathology that can be life-threatening, which is why expert evaluation is essential. Below are a few of the most referenced pathologies. Needs intervention * Congenital cataract, refractive error, ocular alignment, retinal abnormalities. * Strabismus, amblyopia or amblyogenic disorder. * Retinoblastoma – a neuroblastic tumor, the most common primary intraocular malignancy, and the seventh most common malignancy – 1 in 20,000 children. * Of note other signs of retinoblastoma include strabismus, tearing<unk>  eye and iris discoloration. * According to Bates' Guide to Physical Exams, retinal detachment would result in the absence of<unk>  in the affected eye. Benign * Pupillary membrane which will resolve spontaneously. * Mucus in the tear film which will be mobile and resolves with blinking. * Can have different shades of reflex dependent on race and pigmentation of the fundus. *
Red reflex
Diving reflex
Landau reflex
Galant reflex
Tendon reflex
Scratch reflex
Baroreflex
Snout reflex