The Lorgnette Occluder (also known as a Mask Occluder) allows for either eye to be covered. The multiple pinhole attachment, with 17 holes (1.5mm), allows for quick access to a pinhole view. The pinhole attachment can be moved up providing a clear opening for view. Unlike some Lorgnette Occluder's on the market, the attachment will stay in its "upright" position due to an improved design. Strong, self-formed rivet for long durability.