Ophthalmology Which one of the following statements, concerning persistent hyperplastic primary vitreous (PHPV) is not true? A It is generally unilateral B Visual prognosis is usually good C It may calcify D It is most easily differentiated from retinoblastoma by the presence of exophthalmos or cataract. 💡 Explanation Which one of the following statements, concerning persistent hyperplastic primary vitreous (PHPV) is not true? ✓ Correct Answer: B. Visual prognosis is usually good