Video 1 – Techniques of laser peripheral iridotomy (Courtesy of Prof. Ki Ho Park, South Korea) Video 2 – Pigment puff observed during laser peripheral iridotomy (Courtesy of Prof. Ki Ho Park, South Korea) Video 3 – Argon laser peripheral iridoplasty for angle closure glaucoma (Courtesy of Prof. Robert Ritch, USA) Video 4 – Anterior chamber paracentesis for acute primary angle closure (Courtesy of Prof. Dennis Lam, Hong Kong)