A 3 month old infant was brought to the Opthalmology OPD by her mother,as she noticed that pa of the iris in the baby&;s right eye was missing. Examination revealed a defect in the inferior region of iris and pupillary region which gave it a characteristic keyhole appearance. Which of the following mechanisms during the embryonic development will most likely lead to the given condition ?
Congenital detachment of retina Cavitation of posterior chamber Abnormal neural crest formation Failure of closure of choroid fissure