We did tempered obscure glass.

Thank you Deanie Jo. I'm leaning towards the tempered glass option but hubby concerned it's more fragile then glass block should someone slip and fall into the window. The window is 2.5 x 6 ft and is only 12 inches from the shower floor. Did you have similar concern?

Wow, that is quite a window. Keep in mind that with your dimensions, that will be one very heavy window. Is there going to be a sill? If so, a person falling would probably hit the sill and maybe not even touch glass. I'm not a fan a glass block anyway, I think it may be a little outdated, and I'm no glass expert, but before deciding, I would call a glass company and see what they say regarding strength and what would happen to tempered glass should body hit it on the way down to the floor. I think it just breaks into harmless pebbles. Also my understanding is that shower window glass has to be tempered to be in code, but maybe glass block is an exception.

Danie Jo, many thanks for your thoughts. The shower used to be a sunken shower so the window was higher to the shower floor and was above a built in bench. We've filled in the shower as the sunken feature was unsafe. Now we have the window to contend with. There is a 4 - 5 inch sill so good point about it providing some protection. I too am not a fan of glass block so hoping i can make the tempered glass option work. Good point re: double checking if it would be in code. again, thanks so much for your help!