title: Letter to Editor, a scientific forum for discussion.
authors.affiliation: Eye Research Center, Rassoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran.
authors.forename: Khalil Ghasemi
authors.initials: KG
authors.lastname: Falavarjani
authors.affiliation: Eye Research Center, Rassoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran.
authors.forename: Mohsen Bahmani
authors.initials: MB
authors.lastname: Kashkouli
authors.affiliation: Eye Department, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Hormoz
authors.initials: H
authors.lastname: Chams