This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Intra Ocular Tumour, Subject name: Ophthalmology
Not true about retinoblastoma - 
Select and explain. 
A. Bilateral in 20-30%, B. Affects age group 1-5 years, C. More common in males, D. Leukocoria is earliest symptom
C: More common in males
Answer: C: More common in males 
Explanation: Ans. is 'c' More common in males o Retinoblastoma is the most common intraocular tumor in children. The tumor is confined to infancy and very young children (1-2 years). There is no sex predisposition. Retinoblastoma is unilateral in 70-75% of cases and bilateral in 25-30% of cases.o Gaze Fixation starts developing in the first month and is completed in 6 months,o Macula is fully developed by 4 - 6 months.o Fusional reflexes, stereopsis and accommodation is well developed by 4 - 6 months,o Cornea attains normal adult diameter by 2 years of age.o Lens grows throughout life.