The Best Reading Glasses, Plus Expert Tips From An Ophthalmologist (2024)

When it comes to shopping for reading glasses, there’s a long list of features to keep in mind: lens quality and magnification, frame weight and materials, durability (because we all sit on or drop our glasses, eventually) and value for the price. The best reading glasses—including our top pick overall, GlassesUSA—score high in each of these categories, while also managing to look cool and stylish enough for everyday wear.

At Forbes Vetted, we’ve written extensively about eyewear, and as a team of bespectacled editors, we’ve researched everything from the best places to buy glasses online to the best blue-light-blocking glasses. We put that expertise to the test here when making our selections; then, deputy editor and in-house style expert Kari Molvar approved our picks and Dr. Usiwoma Abugo, an ophthalmologist and expert for the American Academy of Ophthalmology, offered tips about what to look for in reading glasses. Below, we’ve assembled a guide to help you find the best reading glasses depending on your specific eyewear needs, style preferences and budget.

Best Reading Glasses Overall

Glasses USA: User-Friendly Shopping Experience

MOST POPULAR

Muse Elle

Turnaround time:7 to 10 business days |Return policy:14 days, no questions asked |Insurance accepted:Yes, as well as HSA/FSA |Virtual try-on:Yes |Virtual Rx renewal:Yes

  • What’s notable:The virtual “mirror” feature lets you upload your photo and try on frames, and the company offers free shipping and returns.
  • What could be better:Glasses orders with multifocal lenses have a longer turnaround time, so plan accordingly.

GlassesUSA sells almost 300 styles of reading glasses and the price you see is very transparent; its frames include free single-vision lenses (if you opt for progressives or special features like blue light-blocking coating, the cost will go up). It also offers virtual try-ons and free shipping and returns, if your readers aren’t exactly right for you. The Muse Elle is a versatile, classic choice: the frame compliments many face shapes, the price is reasonable and it comes in three colors.

Expert tip: GlassesUSA offers a wide range of lenses, including bifocals and progressive lenses. Here’s how to tell the difference between bifocals and progressives: “Bifocals tend to have a clear line in the lens, telling you where to look in the frame to see far (usually above the line), and where to see near (usually below the line). This contrasts with progressive lenses that do not have a line of demarcation,” says Dr. Abugo.

Best Affordable Reading Glasses

Peepers: Great Styles At Unbeatable Prices

Peepers Creekside Frames

Turnaround time: 1 to 2 business days | Return policy: 90 days | Insurance accepted: Yes, as well as HSA/FSA | Virtual try-on: Yes | Virtual Rx renewal: Yes

  • What’s notable:All the reading glasses cost $29 or less, and correction strengths range from +1.0 to +4.0.
  • What could be better:Returns aren’t free (a $4 label fee is deducted from refund).

Peepers specializes in reading glasses and it has a great menu of online services, including a virtual try-on tool to help you find the best styles, an optical guide that helps nail down that best fit (down to the millimeter) and the ability to test your vision to determine which magnification strength you need. The frames are also affordable—all 150 reading glasses cost $29 or less, and many include blue light protection. The Creekside has a universally flattering rounded silhouette, three easy-to-wear tortoise colors and a durable recycled polycarbonate frame. The lightweight lenses, which are available up to a +4.0 prescription, come with blue light protection, anti-reflective coating, UVA/UVB protection and more.

Expert tip: “A UV-blocking coat could be helpful if you spend a lot of time outside, and an anti-reflective coating can be helpful in reducing glare,” says Dr. Abugo.

Best Modern Reading Glasses

Caddis: Artsy And Cool Options

Caddis D28

Turnaround time: 1+ business days | Return policy: 60 days | Insurance accepted: No, but HSA/FSA is accepted | Virtual try-on: No | Virtual Rx renewal: No

  • What’s notable:Most frames are available in stronger prescriptions like +3.5 and +4.0.
  • What could be better:Tinted lenses may take an extra five to seven days to ship.

Caddis is all about making reading glasses fun, not a depressing sign of aging. From lens tints to 70s-inspired silhouettes, its reading glasses are the kind you’ll actually want to show off. The D28s have many customization options like 12 frame colors, eight lens tints and two frame sizes to choose from. The slightly oversized, square frame is an ideal pairing for oval, round and heart-shaped faces.

Expert tip: While these readers offer stronger correction than some other brands, “the specific power of reading glasses that you need should be determined during an eye exam,” says Dr. Abugo. “If you need a stronger or customized lens, you can get a prescription from an ophthalmologist.”

Best Stylish Reading Glasses

Look Optic: Chic And Fashionable Frames

Look Optic Lois Readers

Turnaround time: 1 to 5 business days | Return policy: 90 days, no questions asked | Insurance accepted: Not listed | Virtual try-on: Yes | Virtual Rx renewal: No

  • What’s notable:The frames are made from 100% recycled material, and if you donate or recycle your old frames (from any brand), you’ll receive 25% off a new pair.
  • What could be better:Not every style is available in every lens type.

Look Optic specializes in reading glasses with an emphasis on quality and style. Expect ultra-lightweight frames in clean silhouettes, versatile color options and a focus on sustainability that appeals to fashionable, discerning shoppers. The Lois has a vintage-inspired design and lightweight yet durable, recycled frame.

Expert tip: If you wear contacts for distance, you might notice that you need readers when your contacts are in, but that you can read just fine when you take your contacts out. It turns out there is a reasonable explanation for this: “Contact lenses change the shape of the cornea (the clear part of the front of the eye). When this happens, it can change the eyes’ ability to focus on close objects,” says Dr. Abugo.

Best Reading Glasses For Men

Warby Parker: Stylish Options In Wider Sizing

Warby Parker Fletcher

Turnaround time: 7 to 10 business days | Return policy: 30 days | Insurance accepted: Yes, as well as HSA/FSA | Virtual try-on: Yes | Virtual Rx renewal: Yes

  • What’s notable:The frames are durable and come in wider widths, and the try-at-home program allows you to test out frames before committing.
  • What could be better:The readers only go up to +2.75 strength, so if you need more correction, these may not work for you.

An eyeglass disruptor since their 2010 launch with its in-house designs and free try-on-at-home service, Warby Parker sells a number of styles for men that come in wide and extra-wide sizing. Its reader lenses are free with frame purchase and include scratch resistance, anti-reflective coating and 100% UVA/UVB protection. The clean-line, square Fletcher style is a bestseller made of impact-resistant polycarbonate and comes in four colors, three widths and even a low-bridge fit.

Expert tip: “There are no differences between men’s and women’s reading glasses when it comes to lenses,” says Dr. Abugo. But men often have larger faces and features, so they may prefer a heavier frame.

Best Reading Glasses For Women

Diff Eyewear: Designed For Smaller Faces

Diff Weston

Turnaround time: 3 to 5 business days | Return policy: 14 days | Insurance accepted: Not listed | Virtual try-on: No | Virtual Rx renewal: No

  • What’s notable: A $15 protection plan covers one pair of readers for two years, Diff donates a portion of every purchase to charity, and you get a travel case and cleaning cloth with each pair.
  • What could be better: You have to spend at least $40 to qualify for free shipping.

Diff Eyewear not only focuses on style with its high-quality handmade frames, it also stays true to its philanthropic roots by donating glasses and eyecare to people in need for every Diff purchase. From sleek cat eye to modern round to minimal wire frames, its styles are versatile, durable and available in smaller widths to accommodate petite faces. Eaton’s personal pick, the Weston, has a scholarly look with a twist—a slightly chunky frame with unexpected top angles make a statement. Add in scratch-resistant polymer lenses and an option to upgrade to a high-quality blue light protection, and these frames relieve eye strain while improving vision clarity.

Expert tip: Traditionally, women have preferred smaller frames but chunky frames are trending now, too. Another thing to consider when selecting a frame size is the strength of your prescription. “For example, smaller, narrow lenses may work well if you have a weak prescription, but for stronger prescriptions or multi-focal lenses, larger lens shapes may be a more comfortable option to allow enough room for the entire prescription,” says Dr. Abugo.

Best Blue Light Readers

Felix Grey: Screen Protection Infused In The Lens

Felix Grey Nash

Turnaround time: 3 to 5 business days | Return policy: 30 days, no questions asked | Insurance accepted: Yes, as well as HSA/FSA | Virtual try-on: Yes | Virtual Rx renewal: Yes

  • What’s notable:Felix Grey lenses block 15 times more blue light than other brands’ versions, and the lenses offer UVA/UVB protection.
  • What could be better:There are no bifocal lenses available.

Digital eye strain is a side effect from looking at screens and Felix Grey is committed to protecting delicate eyes from blue light, which can lead to dry, tired eyes, headaches and possibly poor sleep. All of its readers include a proprietary lens technology that infuses the blue light filter into the lens material, rather than an external coating, all without a colored tint (but an amber tint is also available if you prefer that look). The Nash stands out as a favorite due to the medium frame size that works on many face shapes and its light weight won’t weigh you down after extended hours of wear.

Expert tip: The jury is out as to whether blue light-blocking lenses are really necessary. But either way, “if you’re worried about eye strain, taking breaks from screens every 20 minutes or so is the best way to avoid uncomfortable symptoms,” says Dr. Abugo

Best Progressive Reading Glasses

EyeBuyDirect: Easy Options For Multi-Vision Correction

EyeBuyDirect Vinyl Glasses

Turnaround time: 7 to 14 business days | Return policy: 14 days, no questions asked | Insurance accepted: Yes with claim submission, as well as HSA/FSA | Virtual try-on: Yes | Virtual Rx renewal: No

  • What’s notable:You can return pairs within 14 days if the prescription doesn’t feel quite right, which is helpful because it can take several days (or weeks) to get used to progressives.
  • What could be better:Free shipping is only offered if you spend $119 or more.

EyeBuyDirect aims to create a simple shopping experience for customers with all types of vision needs including progressive lenses, which seamlessly correct vision at multiple distances, eliminating the need for separate reading glasses. It offers over 1,600 progressive frame styles and lens customization options like blue-light blocking, UV protection and premium lenses that work with smaller frames. The Vinyl has a modern shape and large frame size that fits its standard progressive lenses—which run a bit larger than regular readers—in order to provide enough clarity for multi-distance viewing.

Expert tip: The American Academy of Ophthalmology offers this piece of advice for getting used to progressive lenses: “Point your nose toward the object you’re focusing on and adjust your chin up or down until the object appears clear. If you experience eye strain or a headache, take a break, remove your glasses and try again later.”

Best Bifocal Reading Glasses

Frames Direct: Designer Options For Less

Ray-Ban RB5228

Forbes Vetted readers get 20-50% off 80+ top brands along with 60% off lenses & add-ons at FramesDirect using promo code LENSJUN60.

Turnaround time: 10 to 12 business days | Return policy: 30 days, no questions asked | Insurance accepted: Yes, as well as HSA/FSA | Virtual try-on: No | Virtual Rx renewal: No

  • What’s notable:Frames Direct has 11,000 bifocal-eligible styles available, including designer frames like these from Ray-Ban.
  • What could be better:The Ray Ban RB5228s are more expensive than the other readers on this list, and there is a $9 fee for returns unless there’s a defect or other warranty issue.

Bifocals are similar to progressives in that they correct near and far vision in one lens, but there’s a visible line separating the lens in two: the top half is for seeing distance and the bottom half is for reading. Frames Direct has thousands of bifocals from high-quality designer and in-house brands, and you can search by brand, color, frame material and more. It may take a couple weeks for your eyes to get used to bifocals, so you have 30 days to return them if you have any issues. The Ray-Ban B5228 is a versatile pick that comes in three frame sizes, 17 color options and an anti-glare lens coating for vision clarity.

Expert tip: “There are three types of vision when it comes to correction lenses: near (for reading or other close activities), intermediate (i.e. for seeing the computer screen) and distance (for driving, etc.). A bifocal provides clear vision in any two ranges of vision,” says Dr. Abugo. “For people who are nearsighted and are beginning to experience presbyopia—when your eyes gradually lose the ability to see things clearly up close around the age of 40— bifocals could be a good option.”

Best Customizable Reading Glasses

Pair Eyewear: Swap Out Frame Colors In Less Than A Second

Pair Eyewear The Soto

Turnaround time: 10 to 14 business days | Return policy: 30 days, no questions asked | Insurance accepted: HSA/FSA only | Virtual try-on: No | Virtual Rx renewal: No

  • What’s notable: Each pair has unique magnetic hardware for swapping out frames.
  • What could be better: The top frames that click over the base frames are a little fragile, so handle them with care.

If choosing one color of readers feels like too big a commitment, Pair Eyewear is the solution you’ve been searching for. It offers over 25 styles, then for an extra fee you can add a top frame that clicks onto the base frame, instantly transforming your look without having to buy yet another pair of reading specs. If you end up buying a handful of top frames, Pair also sells a case or a magnetized wall hanger for storing up to six of them. Forbes Vetted contributor Becky Eaton opted for the Soto base reader frames in clear and added a black non-prescription sunglasses top frame. “Now I can read outside without having to awkwardly wear two pairs of glasses at the same time,” she says.

Expert tip: Pair Eyewear’s single-vision lenses are treated with anti-scratch technology. “Anti-scratching coating could be a good investment to improve the durability of your glasses,” says Dr. Abugo.

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Why Trust Forbes Vetted

The Forbes Vetted team has researched, written and published a large catalog of eyewear stories, connecting readers with high-quality glasses that fit their day-to-day needs.

  • The author of this particular article, Becky Eaton, is a frequent contributor to Forbes Vetted and wears reading glasses herself.
  • All of the picks on this list were approved by deputy editor Kari Molvar, who holds a certificate in fashion styling from the Business of Fashion.
  • Dr. Usiwoma Abugo, clinical spokesperson for the American Academy of Ophthalmology, provided tips about how to choose—and wear—reading glasses.
  • We regularly refresh this article to ensure all product information and pricing is accurate. It was last updated in March 2024 by fashion writer Claire Epting.

How We Chose Best Reading Glasses

  • We carefully researched reading glasses retailers, analyzing best-selling styles, lens options and real customer reviews.
  • We focused not only on brands’ style offerings, but also on value, whether insurance and FSA/HSA is accepted and whether each retailer offers convenient digital features like virtual try-on tools and online prescription renewals.
  • Budget was also taken into account; we included reading glasses retailers that offer styles from high-end brands as well as companies that offer in-house designs at affordable prices, like Peepers.
  • Eaton owns reading glasses from Diff Eyewear and Pair Eyewear, and she shared her personal favorite styles from each retailer.

What To Consider When Shopping For Reading Glasses

There’s a number of factors to think about when picking out reading glasses. Obviously you want a style and color that suits you, but what else should be considered? Read on for Dr. Abugo’s expert advice:

Prescription

Unlike glasses made for viewing distances, reading glasses have magnification qualities. “Reading glasses help correct close-up vision problems by bending (refracting) light before it enters your eye,” says Dr. Abugo. The prescription is measured in positive numbers. A general range available at most online reading glass retailers is +1.0 to +4.0, and you can simply select the magnification when ordering. Most people who are new to reading glasses require a low prescription, typically a +1.0, to start. Note that reading glasses are considered a general fix, intended just for seeing things up close, and don’t require a doctor’s note to purchase. “But the specific power of reading glasses that you need should be determined during an eye exam. If you need a stronger or customized lens, you can get a prescription from an ophthalmologist,” says Dr. Abugo.

Face Shape

When picking out a reading glasses frame, aim “to create contrast between your face shape and frames,” says Kari Molvar, Forbes Vetted’s deputy editor. “You can also be a blend of two types of face shapes.” Below, our handy visual guide for reference:

Blue Light Protection

The blue light emitted from screens—including computers, tablets, phones and TVs—can lead to eye strain, dryness and even poor sleep after extended viewing hours. However, according to the American Academy of Ophthalmology, there is no scientific evidence to suggest that blue light use, under normal use conditions (tablets, computers), is damaging your eyes. “There has been mention of blue light-blocking lenses helping with sleep, but a recent large review has shown that a lot more research needs to be done to prove this,” says Dr. Abugo. Still, it can’t hurt to add blue light-blocking protection, and some of our favorite picks include built-in blue light protection and some brands offer an add-on option for a fee. Be aware that blue-light protection can sometimes add a slight tone to your lenses. If you’re looking for blue light protection with a clear lens, check out Felix Grey’s blue light readers.

Type of Lens

Regular reading glasses are intended for times when you need to read a menu or a book—or anything that involves small print. But they can be a hassle if you also have trouble with your immediate vision (seeing objects 20 to 40 inches away) and your distance vision. Bifocals are designed to help you see close up and at distances, with a line in the middle that helps you remember where to look. Progressive are even more advanced. “They increase in magnification from the top to the bottom of the lens, helping you see clearly at all distances with just one pair of glasses. You look through the top portion of the lens to see far-away objects, the middle to focus on intermediate objects, and the bottom to see things close-up,” says Dr. Abugo. While progressive lenses can be a game-changer for those struggling with varied vision problems, they take some getting used to.

How Do I Know If I Need Reading Glasses?

As we age, the eye’s lens loses its flexibility and has trouble focusing at an up-close distance. Generally speaking, people start to notice a shift in their near vision after age 40. There are a few telltale signs that might signal a need for reading glasses, in which case you’ll want to book an appointment with your eye doctor:

  • You have to hold a book or menu differently—usually farther away—in order to read the words clearly.
  • You find yourself squinting to focus your up-close vision.
  • You can’t see clearly in dim lighting and need to brighten the lights or use your phone flashlight.
  • You have trouble reading text on your phone, tablet or computer and need to brighten the screen or enlarge the type size.
  • You notice reading or other detailed tasks can cause eye strain, headaches or even poor sleep.

If you experience any of the above regularly, it’s best to book an appointment with an eye doctor for a vision assessment. While over-the-counter reading glasses don’t require a doctor’s prescription, we recommend getting an eye exam just to be sure there aren’t any other issues that could be affecting your vision.

How Do I Know What Strength Reading Glasses To Get?

Reading glasses act like a magnifying glass, making objects in your up-close field of vision slightly larger and clearer. An optometrist can accurately test your vision and tell you what strength you need. If you prefer to skip the appointment, some reading glasses brands, like Peepers, offer their own reading glasses vision tests. These tests use a printable diopter chart that shows text at varying sizes—smaller text at the top, larger at the bottom. When holding the chart 12 to 14 inches from your face, read from top to bottom and stop when you can clearly read the line of text. The corresponding magnification is what you should get for your readers.

If you’ve never worn reading glasses before, most people start with a low magnification like a +0.75 or +1.0. This usually has a noticeable impact in improving your up-close vision; from there on it’s an easy baseline to measure against if you need to upgrade to the next magnification level, usually in +0.25 increments.

Can I Wear Reading Glasses All Day?

Technically you could wear your readers all day if you really wanted to, but it’s not recommended. Since reading glasses are specifically made for seeing clearly at close distances, you won’t have the best far distance vision. Plus, there could be a potential risk for permanently affecting your vision by making your eyes focus through a magnification lens unnecessarily. For that reason, it’s best to wear readers only for up-close tasks like using your phone or other handheld tech, computer time, crafts and other detail-oriented activities, and reading, of course.

How Do I Know Which Type Of Lens To Buy?

If you need vision correction for both up-close and far distances, talk to your eye doctor about bifocals or progressive readers. Like its name suggests, a multifocal lens gives you clarity at multiple distances, allowing you to wear your glasses—and see—all day long. If you need suggestions, check out our guide to the best places to buy glasses online.

Is It OK To Buy Over-The-Counter Reading Glasses?

Yes, to a point. The reading glasses you see at pharmacies are a quick and less expensive option than custom glasses. “They come in varying magnification levels, typically between +1.00 to +4.00,” says Dr. Abugo. “These off-the-shelf readers typically don’t come in multi-focal or progressive options; that’s why people with more complex or stronger prescriptions may require a prescription and custom fit.”

Can Wearing Contacts Cause You To Need Readers?

They can. The ability of our eyes to focus is called accommodation. “Typically, in people who are nearsighted, contact lenses increase the amount of accommodation your eyes need to do, making it harder to read up close. For farsighted patients, it decreases the amount of accommodation your eye needs to do, making it easier to read up close,” explains Dr. Abugo. Patients should always check with their eye care professional or ophthalmologist before stopping or changing their contact lenses.

What Is The Bast Brand of Reading Glasses?

Our favorite brand is GlassesUSA and we specifically like the Muse frames. But because each person’s needs are different, it can be helpful to try a number of different brands to see which one fits you best. Many companies like allow you to virtually try on dozens of brands without stepping foot into a store.

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The Best Reading Glasses, Plus Expert Tips From An Ophthalmologist (2024)

FAQs

The Best Reading Glasses, Plus Expert Tips From An Ophthalmologist? ›

The higher the number of diopters, the stronger the power of the glasses. That means +1.50 diopters are stronger than +1.00 diopters. Or, put another way, the higher the number, the closer you'll be able to see. On an over-the-counter display, you might find glasses ranging from +0.75 diopters to about + 3.5 diopters.

Is there a big difference between 1.00 and 1.25 reading glasses? ›

The higher the number of diopters, the stronger the power of the glasses. That means +1.50 diopters are stronger than +1.00 diopters. Or, put another way, the higher the number, the closer you'll be able to see. On an over-the-counter display, you might find glasses ranging from +0.75 diopters to about + 3.5 diopters.

What is the strongest magnification for reading glasses? ›

The lowest-strength reading glasses have powers of +0.25 diopters, whereas high-strength ones can go well beyond +2.50 diopters—in rare cases, all the way up to +4.00.

What are the best lenses for reading glasses? ›

Plastic lenses, also referred to as acrylic lenses, are the most common lens material for over-the-counter reading glasses, and are known for high visual clarity. Plastic lenses are a much more affordable and lightweight alternative to glass lenses, which are used infrequently because of their weight and fragility.

Is it better to get stronger or weaker reading glasses? ›

If two pairs are close, pick the one with the lower strength. If the lenses you pick are too strong for your eyes, they may cause eye strain and headaches, and could make your vision worse faster. There is no “average” power of readers, but many people use reading glasses between +0.75 and +2.50 diopters in strength.

How much should you spend on reading glasses? ›

“It's a really personal question for everyone,” says Madan. “But I would say on the lower end, something decent quality would be $30 to $40, and an average [higher] quality pair could be $200 to $300.”

How do I know if my reading glasses are too strong? ›

There are a few warning signs to look for if you think your glasses are too strong, including blurry vision, eye strain, headaches, dizziness and nausea, and problems with depth perception.

Are reading glasses just magnifiers? ›

Misleadingly called “magnifiers”

According to the FDA, over-the-counter reading glasses are categorized as “magnifying spectacles”, which is unintentionally misleading to many consumers. This is because the primary function of these convex lenses is to improve the focus of near objects.

Is there an online eye test for reading glasses? ›

Online Eye Test by Luxreaders

Our simple, indicative vision test helps you with a quick overview to identify the strength you need when buying reading glasses. Our more in-depth and newest online vision test which is developed by us, is also available.

Are cheap reading glasses good for your eyes? ›

If you don't already need to wear regular eyeglasses, they may even be fine for longer. But cheap readers only magnify the print to help you read it. They are not specific to your individual eye's needs. They probably won't harm your eyesight, but you may experience headaches and eye strain if you use them too much.

How bad is a 1.75 eye prescription? ›

A -1.75 eyewear prescription essentially signifies that you need some additional power to see some objects that are further away. Specifically, we are talking about things like watching television or objects or people at a distance when you are driving.

How do I calculate my reading glasses from my prescription? ›

Reader Strength = SPH + ADD

To calculate your reader strength, take your SPH and add the ADD. For example, if the SPH is +1.00 and the ADD is +1.75 for the right eye, the strength of the reader lenses would be +2.75 for that eye. And if the SPH were -1.00 instead, you'd be looking at a +0.75 reader strength.

Who makes the highest quality eyeglass lenses? ›

Essilor is the world leader in eyeglass lenses. Essilor created the first and finest progressive lenses (Varilux lenses, Varilux Definity®, Varilux Comfort®, Varilux Physio®, Varilux Ellipse®), the finest lens coating (Crizal), and the finest single vision lenses on the market today (Orma, Thin&Lite, and Airwear).

What type of frame is best for reading glasses? ›

Look for rimless and semi-rimless styles or strong square shapes. Steer clear of the more rounded frame styles.

What is 1.00 and 1.25 eye grade? ›

Nearsightedness and Farsightedness

1.00 stands for one diopter. However, the correction can be measured in one-quarter diopters. For example, 1.25 is one and one-quarter diopters. Typically, the further away from zero, the stronger the prescription.

Is a 1.25 sight good or bad? ›

The higher the number, the greater the prescription and therefore the stronger the lens strength required. For example, a prescription of -1.25 is mild myopia, whereas +6.00 is high hyperopia. 'Bad' eyesight, or rather a stronger prescription, would be any number above -5.00 or +5.00.

Do 1.0 reading glasses magnify? ›

They are "diopters," and act as a measurement of the magnification level in the lens. A lower number means less magnification, and as you go up, the magnification gets stronger and stronger. You'll typically see glasses that start with a diopter level of around +1.00 and go up to +3.00.

Is there a big difference between 1.50 and 1.75 reading glasses? ›

The higher the number in diopters, the higher the strength. So, +1.25 reading glasses would be less strong than +1.50 reading glasses, which would be less strong than +1.75 reading glasses.

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