This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lens, Subject name: Ophthalmology
Zonular cataract 
Select and explain. 
A. Riders not seen, B. Developmental cataract, C. Acquired cataract, D. After complication
B: Developmental cataract
Answer: B: Developmental cataract 
Explanation: i.e. (Developmental cataract): (265-Parson 21st) (172-Khurana 4th)ZONULAR OR LAMELLAR CATARACT - refers to the developmental cataract in which the opacity occupies a discrete zone in the lensMost common types of congenital cataract presenting with visual impaiment*** Usually bilateral* Lineal opacities like spikes of a wheel (called riders) may run outwards towards the equator- Other most common types of developmental cataract- Punctate cataract- Fusiform cataract- Nuclear cataract- Coronary cataract- Anterior capsular (polar) cataract- Posterior capsular (polar) cataract