Reading glasses are measured in . The higher the number, the stronger the magnification. While a professional eye exam is the best way to determine your needs, you can use these general age-based guidelines: Suggested Strength 40–44 +0.75 to +1.00 45–49 +1.00 to +1.50 50–54 +1.50 to +2.00 55–59 +2.00 to +2.25 60+ +2.25 to +3.00 Data compiled from SAV Eyewear and Online Opticians UK .
: While slightly more expensive (starting at $95 ), they are the "gold standard" for stylish, durable frames and offer a popular at-home try-on program. Determining Your Magnification Strength buy cheap reading glasses
: Cheap off-the-shelf options have the same prescription in both eyes and cannot correct for astigmatism . They may also use lower-quality plastics that are prone to breaking. Reading glasses are measured in
: Ranked as the best overall for variety, they offer powers from +0.25 to +4.00. Prices range from $19 to $124 , and they accept most vision insurance. : While slightly more expensive (starting at $95
Online retailers have revolutionized the eyewear market, offering stylish frames for a fraction of the cost of traditional boutiques. Here are the top-rated sites for 2026 based on value, variety, and reliability: