Frequently Asked Questions (FAQ)
About the Usage of Kubota Glass
Q. What is the prescription range of Kubota Glass?
A. The prescription range of Kubota Glass is +0.50D to -12.00D in the most minus meridian (including the cylindrical power) in 0.25D steps; cylinder 0.00D to -2.00D in 0.25D increments; axis 0 degree to 180 degree in 1 degree steps. The range of binocular interpupillary distances is 51.0 mm to 68.0 mm.
Kubota Glass can be manufactured without prescription correction, such as if you wish to wear Kubota Glass in conjunction with contact lenses or if you are nearsighted and can read at a comfortable working distance without corrective lenses. Please contact us if you have any questions about the prescription range.
Q. I have astigmatism. Can I use Kubota Glass?
A. Yes, Kubota Glass can be made for prescriptions with up to 2.00D of astigmatism
Q. I have strabismus. Can I use Kubota Glass？
A. Yes, but visual experience may vary for individuals with strabismus. Please consult with your personal eye care professional.
Q. I have presbyopia. Can I use Kubota Glass?
A. This product is an augmented reality device that uses special lenses and cutting-edge technology to project-specific, modified illumination. There is no harm associated with the use of Kubota Glass, but if you have any concerns, please consult your personal eye care professional.
Q. Does Kubota Glass work with presbyopia?
A. This product is an augmented reality device that uses special lenses and cutting-edge technology to project-specific, modified illumination. The unique illumination system may aid with near-focus demands for presbyopia, but consult with your eye care professional regarding your specific needs.
Q. Will my vision be restored？
A. This product is an augmented reality device that uses special lenses and cutting-edge technology to project-specific, modified illumination. There is no evidence that Kubota Glass may work to restore vision.
Q. Are there any side effects？
A. No side effects have been reported in clinical trials to date, and the device has undergone extensive and rigorous safety testing.
Q. Can I use Kubota Glass with contact lenses?
A. Yes. In most cases, Kubota Glass should be manufactured without prescription correction if being worn with contact lenses. If you wear reading glasses over your contact lenses, Kubota Glass should be ordered with the same prescription as your reading glasses.
Q. I am currently undergoing treatment for myopia with orthokeratology. Can I use Kubota Glass at the same time?
A. There is no risk associated with Kubota Glass being used with other myopia treatments. If you have specific concerns, please consult your personal eye care professional.
Q. I am currently undergoing treatment for myopia with an eye drop. Can I use Kubota Glass at the same time?
A. There is no risk associated with Kubota Glass being used with other myopia treatments. If you have specific concerns, please consult your personal eye care professional.
Q. Under what circumstances should it be used?
A. Kubota Glass should be worn indoors only and used when seated whenever possible. Do not wear Kubota Glass while walking, driving, or exercising.
Q. How long does Kubota Glass need to be used in a day?
A. 1 to 2 hours per day is recommended.
Q. Are there any age restrictions?
A. It is designed for people aged 6 and up.
Q. Can Kubota Glass be used with family members?
A. No, because each Kubota Glass is customized for each user.
Q. Is Kubota Glass water-repellent or waterproof?
A. Kubota Glass is coated to be water-repellent (nano-coated), just like a hearing aid. Kubota Glass has a water-repellent design for everyday use but is not fully waterproof. Do not soak Kubota Glass in water, such as an ultrasound bath. In addition, do not use Kubota Glass in a bathtub or shower. Please refer to the Instructions for Use for further information.
Q. Is there any special maintenance required for Kubota Glass?
A. Only use the lens cleaning cloths supplied with Kubota Glass or similar micro-fiber cloths available at optical stores to avoid scratches on the lens. Lens cleaning spray for plastic lenses with anti-reflective coating can be used on Kubota Glass itself and the eCase. Using household cleaning products such as ammonia, bleach, alcohol, baby wipes, etc., may damage the glasses, lenses, or eCase. Do not use an ultrasonic eyeglass cleaner. Always store Kubota Glass in the eCase and keep it out of direct sunlight.
About Kubota Glass
Q. What is the weight of Kubota Glass?
A. The weight of the Kubota Glass frame is approximately the same as a standard pair of glasses, but since Kubota Glass incorporates two lenses per eye, it may be heavier than a standard pair of glasses. With prescription lenses, the overall weight is approximately 40 grams, although actual weight may vary depending on the power of the prescription lenses.
Q. What is the size of Kubota Glass?
A. Temple Length: 125mm / 135mm / 140mm
Pupillary Distance (PD): 51.0mm to 68.0mm (in 1.0mm increments)
※The average pupillary distance for Japanese adults is said to be between 62.0mm and 64.0mm (there are individual differences).
Q. Is Kubota Glass registered as a medical device?
A. Kubota Glass has completed medical device registration in the U.S. and Taiwan.
How to Purchase Kubota Glass
Q. Where can I buy Kubota Glass?
A. Kubota Glass is currently available for purchase exclusively in Japan. Customers residing overseas are encouraged to obtain a prescription from their local ophthalmologist and make a purchase through our website and either come to Kubota Glass Store in Tokyo to pick it up in person or have it sent to a shipping address in Japan. If you have any questions or concerns, please feel free to contact us.
Q. Can you ship Kubota Glass when ready?
A. We can ship Kubota Glass to an address in Japan, if you wish; however, you will be responsible for shipping charges. We do not ship overseas.
Please note that each device is custom-made and can take up to several months to produce. Since Kubota Glass is a precision device made to careful standards, we cannot guarantee proper fitting or provide support for any malfunctions if you are to do it yourself.
Q. I live outside of Japan. Can I still purchase Kubota Glass?
A. Kubota Glass can only be dispensed in Japan. We recommend being fit for Kubota Glass on-site at the store from which you plan to purchase Kubota Glass.
Please note that each device is custom-made and can take up to several months to produce. Since Kubota Glass is a precision device made to careful standards, we cannot guarantee proper fitting or provide support for any malfunctions if you are to do it yourself.
Q. What is the selling price?
A. The suggested retail price is 770,000 yen (tax included).
Q. What methods of payment are available?
A. Please contact the location from which you intend to purchase Kubota Glass.
At the Kubota Glass Store and our official Kubota Glass website, managed by the Kubota Vision Japan office, credit card payment is available.
Q. How long is the lead time for delivery from the purchase date？
A. It is usually a 1-1.5 months lead time for delivery, but it may vary depending on stock availability, delivery from overseas, traffic conditions, or weather.
Q. Is it possible to try on Kubota Glass?
A. We have samples available at each location in Japan. Please contact them before visiting.
Q. Can I return, exchange, cancel, or get a refund after placing an order?
A. As Kubota Glass is made to order especially for you, we don’t accept a return, exchange, cancellation, or refund request after your order is confirmed.
About After-Purchase Care
Q. What kind of after-purchase care is available?
A. It comes with a 1-year manufacturer’s warranty. Please contact our customer support for details.
Q. Is there a warranty?
A. Please register your warranty online within 30 days of receiving your product to be covered by the manufacturer’s warranty for one year. In addition to this manufacturer’s warranty, you can buy Kubota Care, a 3-year warranty for Kubota Glass. You will need the serial number of your Kubota Glass and eCase for the warranty. These are on the inside of the right temple (“arm”) of the Kubota Glass and the bottom of the eCase. For more information, please contact our customer support.
Q. I live outside of Japan. If the product malfunctions after taking back home overseas, can it be repaired?
A. Repair support is available only in Japan. You will be responsible for any overseas shipping costs associated with the repair. Please note that you can pick up the repaired product only in Japan.
Q. Is it possible to exchange lenses when my vision changes?
A. Prescription lens replacement can be completed, if needed, by request. An estimate will be provided on a case-by-case basis. Please note that the time and cost for lens replacement are different from regular eyeglasses due to the highly specialized process and equipment required to replace Kubota Glass lenses. Please contact our customer support for details and costs.
Q. Is it possible to change the frames as my child grows?
A. The frames of Kubota Glass are available in a single size. However, the pupillary distance (PD) can be adjustable within a range of 51-68mm. Additionally, the temple length can be customized to 125mm, 135mm, or 140mm for an additional fee.