When a small target is oscillated in front of a patient with binocular vision, patient sees movement of the object in elliptical orbit rather than to and fro path. What is this phenomenon known as?
Correct Answer: Pulfrich phenomenon
Description: This phenomenon is known as Pulfrich's phenomenon Pulfrich's phenomenon In this phenomenon the depth perception is impaired. This is usually seen in optic neuritis (eg : Multiple sclerosis). Oppenheim phenomenon: Dorsiflexion of great toe elicted by irritating downward of medial side of tibia. Uthoff phenomenon : Exacerbation of MS symptoms that is induced by exercise, a hot meal or hot bath. Paraoxysmal convergence spasm phenomenon: Rare but relatively typical symptoms of MS caused by abnormal excitation in demyelinated plaques.
Category:
Ophthalmology
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