What does Atresia Choanae refer to?

Atresia choanae is primarily defined as a congenital condition where the choanae, which are the passages connecting the nasal cavity to the throat, are blocked or narrowed. This obstruction can lead to significant breathing difficulties in infants, as they rely on nasal breathing. Therefore, the correct answer is associated with the blocking of the airways, as it impedes airflow from the nose to the pharynx and can result in respiratory distress.

Other options do not accurately describe atresia choanae. Abnormal growth in children does not relate specifically to this condition, as atresia choanae is about airway obstruction rather than growth patterns. A condition related to eye cancer is unrelated to this term, which focuses on nasopharyngeal anatomy, and the degree of visual impairment does not pertain to the respiratory implications of this condition. The appropriate identification of atresia choanae lies in understanding it as a blockage affecting air passage, emphasizing the critical nature of airway integrity in newborns.