Classic reading glasses in a transparent plastic case. Reading glasses are designed to correct presbyopia, a natural age-related condition that affects the eyes' ability to focus on close objects.

The lenses are clear, and the frame is plastic, lightweight, and comfortable. They are "half-frame" glasses that facilitate moving the gaze from near to far.

The numbering of reading glasses refers to the diopter (refractive power) required to correct near vision. The numbering is expressed in positive degrees (+) and is determined by the prescription from the optometrist or ophthalmologist:

• +0.50 to +1.00: For mild presbyopia or for users who are just beginning to have difficulty with near vision.
• +1.25 to +2.00: For moderate presbyopia, usually for ages 45-55.
• +2.25 to +3.00: For more advanced presbyopia, usually in individuals over 55.
• +3.25 and above: For severe cases, where presbyopia has progressed further.

The exact numbering is determined through a refraction test by an optometrist or ophthalmologist. You can try on glasses with different measurements to see which ones suit you best. The numbering may differ between the two eyes (e.g., +1.5 in the right, +2.00 in the left).