1940
PURPOSE: The intravitreal application of triamcinolone acetonide as treatment of long-standing, therapy-resistant cystoid macular edema after penetrating keratoplasty is reported.
 potential therapeutic event: treatment 
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: adverse event, potential therapeutic event 
Text: {0} 
Answer:
 potential therapeutic event: treatment 