This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cataract, Subject name: Ophthalmology
Second sight phenomenon is seen in 
Select and explain. 
A. Nuclear cataract, B. Coical cataract, C. Senile cataract, D. Iridocyclitis
A: Nuclear cataract
Answer: A: Nuclear cataract 
Explanation: Second sight - improved in near vision and presbyopia correct itself Nuclear cataract - Hemeralopia (day blindness) - Decreased distant vision - Seconded vision