strength
Reading glasses usually range from +0.25 to +2.50 diodes (the unit of measurement for glasses prescriptions), although the average starting strength is usually about +0.75. In rare cases, the read glass strength can be increased to +4.00.
“The tips for buying reading glasses online are similar to buying ready-made reading glasses at a pharmacy: it’s a convenient option, but it’s not a good idea for everyone,” said Ravi Goel, MD, clinical spokesperson for the American Academy of Ophthalmology. “If you have different prescription requirements in each eye, astigmatism, high power, or more complex prescription requirements, you should see an eye health professional with updated prescription glasses.”
Dr. Steven Reed, president of the American Optometry Association, added: “The wrong prescription can cause headaches, eye fatigue and even nausea. If you choose to buy online, we recommend choosing lower power between the two advantages, as this is usually a safer option, and overly powerful lenses tend to cause slightly uncomfortable lenses than slightly weaker.”
Goel notes that everyone over the age of 40 should see an ophthalmologist who examines an ophthalmologist because that is the age of presbyterians and potential ophthalmic diseases usually begin to develop. In addition, not all ophthalmic diseases begin with obvious symptoms.
Types of glasses read
“There are four main types of reading glasses: single vision, bifocal, triple focus, and progress,” Gore said, defining it as:
- Single-view reading lens Usually designed to correct myopia.
- Bifocal lens Correct the distance between the lower half and the top of the lens.
- Trifocus lens There are three parts: distance, middle and myopia. Reid said these are especially useful for more than 50 people who have lowered their focus.
- Progressive lens Maintain a smooth transition between distance and focus area without visible dividers. “They provide a more natural look and a smoother transition between different viewing distances,” Reed added.
“Prescription reading glasses (also known as monovision readers) are a great next step when the universal OTC reader is no longer sufficient. These are customized by ophthalmologists and can correct astigmatism, inequality prescriptions, or other specific visual needs,” Reed said. “For people who need multiple vision corrections, there is a multifocal lens.”
Lens material
“It depends on the lifestyle,” Gore said. “For example, if you spend a lot of time outdoors, you might prefer polycarbonate, which is lightweight and not prone to cracking. There are also a variety of lens paints available (i.e., reflective paints) available for convenience, but not needed.”
Goel notes that the American Academy of Ophthalmology does not recommend blue lamp paint or lenses because “there is no scientific evidence to suggest that blue light glass helps to reduce eye strain.” Instead, take a break from near-work activities and use eye drops if necessary. If you continue to experience symptoms, see your ophthalmologist.
According to Reed, most people choose between the following three lens materials:
- CR-39 plastic lens: Affordable, lightweight, and offers good optical clarity, making it a popular choice for basic reading glasses.
- Polycarbonate lens: Lighter and more obvious influence than CR-39 plastic, making it a safer option for those who tend to lose their glasses or want to be more durable.
- High-index plastic lens: Thinner and lighter than other materials, it is a great choice for those who need a stronger prescription but want to avoid a thick lens.
“For most reading glasses, especially occasionally or indoor use, CR-39 plastic works well,” Reed said. “If you need extra durability or prefer thinner, lighter lenses, polycarbonate or high index materials may be more appropriate. Your optometry doctor can help recommend the best lens materials based on your specific needs.”
Reed added that not all lens materials and paints are equal. This is why it is important to contact an ophthalmologist to ensure the importance of reading glasses you choose.
style
One of the most fun parts of buying glasses is finding a frame that illustrates your personal style and suits your face shape. When purchasing glasses online, be careful about the material, color and width.
price
Reading glasses cost from affordable to expensive. For example, if you want a pair of designer glasses, be prepared to spend more than $100. If you tend to lose reading glasses, you may need to buy more cheap pairs to keep multiple on hand.
“The price of glasses doesn’t necessarily reflect quality; the real question is whether anyone finds ready-made reading glasses helpful, or they need custom reading glasses to meet their visual needs,” Goel explains.
“Usually, spending more on a frame doesn’t mean you end up with higher quality glasses. You don’t need a designer frame to have a good set of glasses. For prescription lenses, such as bifocal, triple-focal or progressive lenses, Optician will help you choose the best good lenses for your visual needs. The best reviews of your visual needs are sold online, which are sold online, and these sellers often sell.
Other coatings
You can get reading glasses by treating the lenses with blue light, reverse glue and polarized paint. But be aware that you may have to pay an extra fee for this.
Shipping and Returns
If you buy reading glasses online, you may not try it before you purchase it. As a result, make sure the company has a return and exchange policy that can cooperate. As for shipping, if you need to read glasses as soon as possible, it is best to go with a company that offers clear or overnight shipping.
