Ophthalmology All of them are true about Optokinetic Nystagmus (OKN) EXCEPT A Jerk nystagmus induced by moving repetitive targets B Useful for localising cause of isolated homonymous hemianopia C Slow phase is a pursuit, fast phase is saccade D Type of pathological nystagmus 💡 Explanation All of them are true about Optokinetic Nystagmus (OKN) EXCEPT ✓ Correct Answer: D. Type of pathological nystagmus