It looks like you’re referring to reading glasses with a magnification strength of +3.00. “Joy” might be a brand or style name for these glasses. Reading glasses like these are…

How to Use Joy Reading Glass +3.00

Step 1: Unpack the Glasses

• Carefully open the packaging to avoid damaging the glasses.
• Remove any protective coverings or stickers on the lenses.

Step 2: Wear the Glasses

• Hold the glasses by the temples (the arms of the glasses).
• Gently place the glasses on your nose and adjust the temples over your ears.
• Ensure the glasses sit comfortably and securely on your face.

Step 3: Adjust as Needed

• If the glasses feel loose, carefully tighten the screws on the hinges using a small screwdriver.
• Adjust the nose pads if they are present, to fit comfortably on your nose.

Step 4: Use for Reading

• Use these glasses specifically for reading or close-up work, as they are designed for a +3.00 magnification.
• Hold your reading material about 12 to 14 inches from your eyes for optimal clarity.

Step 5: Clean and Store

• Use a microfiber cloth to clean the lenses. Avoid using paper products which can scratch the lenses.
• Store the glasses in a protective case when not in use to prevent damage.