A contact lens suction cup is a handy tool for people who wear soft contact lenses. It consists of a small handle with a soft, hollow suction cup at the end, usually made of silicone or rubber. By gently pressing the suction cup and placing it against the lens, a slight vacuum is created, causing the lens to stick to the popper.
You mainly use a contact lens suction cup to pick up a lens from the lens case without touching it with your fingers, or to place the lens on your eye. Once the lens is on the surface of your eye, you release the suction cup and the lens will come away from it by itself.
Ploppertjes are particularly useful if you find it difficult to handle a lens with your fingers, for example because you have long nails, your fingers are dry, or you find it hard to transfer the lens from your finger to your eye. People with reduced sensation in their fingertips or limited manual dexterity may also benefit from them.
Please note: a ‘ploppertje’ is designed for soft lenses. For hard or rigid lenses, there are other tools available, such as small tweezers or a special suction cup with a more robust design.