CCTV footage was shown to a jury of the agonising moment diner David Evans, 47, had the hot spice thrown into his eyes by chef Kamrul Islam.
Footage showed Islam, 47, wearing rubber gloves as he launched a cloud of red powder towards Mr Evans in the restaurant.
Grandfather Mr Evans told how he was left in ‘unbelievable pain’ – and feared he would never see again.
Pipe-fitter Mr Evans said: ‘It was horrific. That’s the only way I can describe it. ‘At first I thought you hear about these acid attacks.