TCL has 3D glass free tv.it is 50 inch.you do not need any glasses to wear.But it costs 2 million sri lankan rupees.It is very expensive to manufacture glass free 3D tv.Therefore people will prefer active glass 3D tv.
if your are not wearing glasses, you may get head pain in your first few days.if you are wearing glasses , you do not get any thing as you are used to it.