Blue light is the portion of sunlight that signals wakefulness, regulates hormones, and sets the body's circadian rhythm. It is essential during the day, when it supports energy, focus, and healthy biological timing.

The problem is modern lighting. Artificial lights and screens emit high levels of blue light, and the brain cannot distinguish them from sunlight. When exposed at night, this light signals “morning,” triggering wake-promoting hormones like cortisol and adrenaline—exactly when the body should be winding down.

This disruption interferes with sleep, recovery, and cellular repair, making it harder to fall asleep, stay asleep, and wake up refreshed. Over time, chronic circadian disruption is strongly linked to declines in physical health, mental health, and long-term resilience.

Blue light is also short-wavelength, high-energy light—similar to UV—which can stress sensitive retinal tissue and interfere with the eyes' natural repair processes, particularly in the evening.

For these reasons, filtering blue light at the right times—especially after sunset—is essential for protecting sleep, health, and long-term performance.

We have collaborated with leading experts in photobiology and optics to craft what we believe are the world's most effective lenses. Defining "best" requires transparent criteria. Our paramount aim is health optimization, prioritizing protection from harmful Blue Light while ensuring optimal function, encompassing optical clarity, color perception, and style.

Our lenses uniquely balance Blue Light filtration without compromising color rendering, crucial for both protection and visual experience.

Unlike clear lenses that fail to block significant Blue Light above 420 nanometers, our proprietary pigmented mixture effectively targets the most harmful range, centered around the 455-nanometer spike from LED sources prevalent today.

Ra Optics Daylight Lenses block all of the harmful blue wavelengths, providing comprehensive protection ideal for indoor environments. Ra Optics Sunset Lenses block all of the wavelengths in the blue and green spectrum that can disrupt natural melatonin secretion, helping to maintain a healthy circadian rhythm and optimal melatonin production.

While complete darkness is optimal for sleep, it's impractical in our modern lives to completely eliminate light after sunset. Our lenses strike a balance, preserving nighttime visibility while minimizing circadian disruption, recognizing wavelengths below 550 nanometers as key contributors.

Blocking light beyond 600 nanometers compromises visibility, rendering lenses impractical. Our diverse frame styles, crafted from high-quality German steel and/or Italian Mazuchelli Acetate, ensure both functionality and fashion appeal, fostering consistent usage.

In sum, Ra Optics' blue light protection eyewear set the standard for protection, exceeding benchmarks while enhancing aesthetics, and ensuring that anyone can be excited about wearing them.

Non-Prescription Fulfillment

Orders that include only non-prescription eyewear are fulfilled on the next business day. If an item is backordered, this will be clearly indicated on the product page and in your cart, along with an estimated ship date.

Reader & Prescription Fulfillment

Reader and prescription glasses require 12–14 business days to fulfill, as each pair is custom-made to order and treated with a premium anti-reflective (AR) coating, which requires additional processing time.

Domestic (USA) Shipping

Once shipped:
Free U.S. Shipping typically arrives within 2–5 business days, though delivery may take up to 7 business days.
Express U.S. Shipping provides guaranteed 2-day delivery from the date of fulfillment (the day your order is placed or the following business day).

Please note: Selecting Express Shipping does not expedite the production of Reader or Prescription glasses. Express shipping only shortens transit time after your order has shipped and does not affect production speed.

International Shipping

We offer international shipping with duties and taxes included at checkout whenever possible, for a seamless experience. Please note that all international orders may be subject to inspection by your country's customs authority. While we will assist you in resolving any customs issues, these processes are handled by local authorities. Shipping timelines do not account for potential customs delays.

Estimated Shipping Times (once shipped):
FedEx International Priority:
• 2–3 business days to Europe
• 2–4 business days to the rest of the world

FedEx International Connect Plus:
• 2–4 business days to Europe
• 3–5 business days to Asia and the rest of the world

​​All of our frames are unisex and designed to suit a wide range of face shapes and sizes. Each product page clearly indicates whether the frame size is Small/Medium or Medium/Large to help you find your ideal fit.

If you already wear glasses or know your preferred frame measurements, you can view our size guide here.

We also offer a virtual try-on feature that allows you to see how each frame style looks on you using your computer. Simply visit the product page of the frame you're interested in and click “Virtual Try-On.”

Lastly, we offer free exchanges for all US customers within 30 days of receipt, allowing you to exchange your product for another if you're not satisfied.

International customers can exchange products as well, but must pay return shipping and the fee for shipping, duties & taxes of the replacement. (Click here to view our full Return and Exchange Policy)

We can process single-vision near, single-vision computer, and single-vision distance prescriptions that include a pupillary distance (PD), are not expired, and have a power range of +2.00 to -6.00 spheres and up to -2.00 cylinder.

We are currently unable to process bifocal or multifocal (also known as progressive addition) prescriptions. A prescription that includes an “ADD” value—typically between +0.75 and +3.00—is a key indicator that it is a bifocal or progressive lens prescription.

Exceptions:

✅ If the Sphere and the 'ADD' value on your prescription combined do not exceed +2.00 and your cylinder value does not exceed -2.00, we can add the 'ADD' value to the Sphere value to process your prescription as single-vision near (reader) glasses.

✅ Alternatively, if your cylinder value does not exceed -2.00, we can drop off the 'ADD' value to process your prescription as single-vision distance glasses.

If you upload a prescription for bifocal or multifocal (progressive) lenses, we will contact you to let you know that we are unable to process your request and ask you to upload a new prescription file that meets our limits.

If a single-vision prescription is not an option for you, we will unfortunately have to cancel your order.

We are actively exploring ways to expand our prescription offerings, including the potential introduction of clip-on and fit-over glasses.

Our daylight lenses are precisely engineered to filter the most disruptive wavelengths of blue light during the day, preserving visual clarity while supporting eye health and hormonal balance.

Our sunset lenses are designed for evening wear, blocking 100% of blue light and most green light to support melatonin production, natural sleep cycles, and cellular regeneration.

While Daylight Lenses can provide some benefit in the evening, Sunset Lenses have a stronger effect on supporting sleep. Conversely, because Sunset Lenses block more light than necessary during the day, they can reduce visual clarity — making Daylight Lenses the better choice for daytime use. This is why we offer both lens types, each designed for its specific purpose.

First, unlike traditional sunglasses, BlueSync is specifically designed, based on the science of light and circadian rhythms, to specifically “enhance” beneficial ranges of the light spectrum for particular biological effects—specifically: strengthening the circadian rhythm, increasing energy levels, mood, focus, and overall performance. Traditional sunglasses simply focus on blocking harmful UV and reducing all visible wavelengths, and generally not on selectively enhancing beneficial wavelengths.

Second, all Ra Optics' products, including BlueSync, acknowledge the significant risk posed by high-energy visible light (HEVL)—an often overlooked range of light which, similar to UVA/UVB, causes disruption to eye health over extended periods of exposure. Unfortunately, the vast majority of modern sunglasses and eyewear products fail to meaningfully address the risks posed by HEVL.

In these ways, BlueSync is a revolutionary lens technology which both offers superior protection to traditional sunglasses, while offering a totally unique suite of biological benefits.