Adjustable vision glasses let you fine-tune focus with a dial on each side of the frame. They're a handy option for some people and not ideal for others. These five questions will help you decide.
1. Is close-up reading getting harder?
If you've started holding menus at arm's length, you may be noticing presbyopia — the natural decline in near focus with age. Adjustable glasses are often used for exactly this.
2. Do you switch distances a lot?
Moving between a book, a laptop and the TV? Being able to re-tune focus can be more convenient than swapping between several pairs of readers.
3. Do you need a backup pair?
Many people keep adjustable glasses in the car, a desk drawer or a travel bag as an emergency spare.
4. Do you have astigmatism?
Most adjustable designs don't correct astigmatism. If you do have it, prescription lenses are usually the better choice.
5. Are you okay with a smaller "sweet spot"?
The sharpest viewing area is often smaller than with custom lenses. Many users don't mind; some do.
How to set them up
Store them in a case and clean with microfiber only. For bright days, polarized fit-over sunglasses slip over the top.
Adjustable glasses don't replace regular eye exams. Get prompt care for sudden vision changes, eye pain, flashes of light or new floaters.
