This topic is about finding ways to remove the clear plastic covers from convex barrier rings, especially when dealing with short fingernails and numb hands. Here are some helpful tips and techniques that might make this task easier:

1. Warm the barrier ring first:
- Shape the ring and hold it between your hands for about a minute to soften the adhesive. This often makes the cover easier to lift.
- Alternatively, use a hair dryer to gently warm the ring. This can be particularly useful if the rings are past their expiration date and the adhesive has become hard.

2. Create a "ripple" in the plastic:
- After warming the ring, rub a finger around the cover to create a small bubble or ripple. You can then grasp this edge to slowly peel off the film.

3. Use tools for extra leverage and precision:
- Tweezers can provide a firm grip to lift the edge of the sticker.
- A small knife blade, switchblade, or the tip of a scissor can be used to slide under the edge to start the peel. Once you have a grip, you can pull the cover off by hand.

4. Check the product's age:
- Barrier rings that are expired or from old stock may have harder adhesive, making them tougher to peel. Warming them usually helps to overcome this issue.