The play is conducted by the members of the Special Theatre, a theatre lab created by the PRO ARTE Foundation for blind and visually impaired. For those who haven'e had a chance to see the performance — here you can watch the video. it is in Russian, but, still, will give you an idea of the project.  https://vimeo.com/493641129     

*The title of the play Ne Zrya is translated into English language as ‘not in vain’, however, it is not the only meaning of the phrase. The word ‘vain’ in Russian language is semantically connected to the word ‘vision’ and because of this two layers of the meaning appear in the title.