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
[{'content': 'Spontaneous absorption of lenticular material is seen in- \nSelect and explain. \nA. Myotonic dystrophy, B. Hallermann Streiff syndrome, C. Aniridia, D. Persistent hyperplastic primary vitreous', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Sometimes there may occur total or paial absorption of congenital cataract, leaving behind thin membranous cataract. Rarely there is complete disappearance of all the lens fibres and only a fine transparent lens capsule remains behind. Such a patient may be misdiagnosed as having congenital aphakia. This is associated with Hallermann-Streiff-Francois Synodrome.', 'role': 'assistant'}]