This study shows a statistically significant decrease in the number of parents/caretakers reporting swallowing symptoms after injection laryngoplasty, and a decrease in the average percentage of parents/caretakers reporting various other symptoms. Based on our results, injection laryngoplasty can be recommended as a diagnostic tool in the treatment of laryngeal cleft. Furthermore, it can be used as bridge therapy (i.e. until patients outgrow their symptoms, or until suture repair).