Showing posts with label eyeglass. Show all posts
Showing posts with label eyeglass. Show all posts

Thursday, April 26, 2012

emPower! Self-Focusing Electronic Eyewear


Now you can adjust your vision just by living your life. With emPower!™, the first electronic-focusing eyewear. A touch of the temple or tilt of the head activates a layer of liquid crystals in each lens, instantly creating a near-focus zone. emPower! not only gives you control over your vision, it also provides wider fields of view and less distortion than progressives. 
They're high-definition. You're the remote.
If you currently wear progressive lenses or bifocals, emPower! will transform the way you see and give you unprecedented control over your vision.

How It Works?Touch, touch, swipe.

GlassesEach of the lenses in emPower!™ Eyewear features a virtually invisible layer of
liquid crystals that instantly adjusts
 and provides you with a near-focus zone.
Activating that zone is simple. In Manual mode, a touch of the temple triggers
the near-focus zone, while another touch turns it off. A swipe of the temple
activates the Automatic mode, so the near-focus zone turns on and off in
response to up and down movements of your head. And a portable charger
lets you power emPower! for 2–3 days with a single charge.

Glasses image
Liquid crystals in 
the lens is solid science.
The lenses for emPower! eyewear  feature virtually invisible layers of liquid crystals that instantly adjust and provide a near-focus zone whenever you need it.

Glasses image 

Eyesight à la mode.
A touch or swipe of the temple 
activates three modes of operation
on emPower!

Glasses image
With emPower!
you're in charge.
Electronic focusing requires
recharging. We made it as effortless as going to bed.

See the future through a layer of liquid crystals.

emPower! is designed to provide sufficient power for comfortable vision when the electronic readign zone is in Off mode.  Since the reading zone can be turned on and off as needed, you don't have to deal with it when near-vision isn't required.
An electronic reading zone is instantly activated by a layer of liquid crystals embedded in each lens.
Instant, automatic vision correctionfor all ranges of sight.
Wider fields of view than with a progressive addition lens.
Less swim and distortion than with a progressive addition lens.
A touch - with a touch of the temple, Manual On activates the invisible electronic reading zone.  With another touch, Manual Off deactivates teh electronic reading zone.  A swipe - with a swipe of the temple, Automatic mode activates an accelrometer, so the electronic reading zone turns on and off in response to head movement.
Glasses in a charger
emPower!™ comes equipped with a portable charger that helps keep you in charge of your vision.
emPower! can be fully charged overnight. A single charge lasts 2–3 days.

Frequently Asked Questions

With emPower! Eyewear, nothing is out of the question.


Will emPower! Eyewear work at extreme temperatures?
emPower! Eyewear has been proven to work in extreme cold or hot temperatures, but like any electronic product, it is important they not be left on the dashboard or other hot surface for an extended period of time
Will the temple touch-swipe area wear out?
PixelOptics has performed tests with numerous people wearing and using the product. None have experienced the temple touch-swipe area wearing out. The swipe of emPower! is no different than the swipe of an iPhone. We do not anticipate any problems with it wearing out.
What is the lifetime of the batteries? How long does a single re-charge last? Can I overcharge emPower! Eyewear?
Based on normal use, the batteries could last up to approximately three years. Depending on your occupation and your eyewear use, a single re-charge on the portable charger can last (on average) up to 2–3 days. It is impossible to overcharge emPower! as an “overkill” function stops the charging when full.
Is emPower! Eyewear water resistant? What should I do if it gets wet (extreme downpour, worn in the shower or pool, etc.)?
Yes, emPower! is water resistant. While it is highly discouraged to submerge your emPower! Eyewear, it been shown to survive and work properly even after being under water for an extended period of time. emPower! must be allowed to dry completely and recharged for proper functionality. If they do not function afterwards, you should return them to your Eye Care Professional for repair.
How do I clean my emPower! Eyewear?
Use the emPower! cleaning cloth that came with your kit. If necessary, you can lightly dampen it with an ALCOHOL-FREE lens cleaner. Never apply or spray alcohol or lens cleaner on emPower!
Can a prescription be changed, tuned or reprogrammed, or do I need new frames for prescription changes?
If you have a new prescription, a pair of eyewear will be manufactured to fit the new Rx. Depending on the condition of the frame, a new frame may not be required. There is one exception to the standard process: the frame will need to be returned to the lab so lenses can be inserted. In the future, we will be training Eye Care Professionals to insert lenses.
What type of no-glare treatment is being used?
A high-quality, no-glare treatment will be used on all emPower! Eyewear. The exact brand will depend on the certified laboratory processing the emPower! job.
Will emPower! set off alarms or be damaged when going through airport security?
No. emPower! can be worn through airport security just as hearing aids are.

Credit : lifeactivated.com

Friday, July 22, 2011

Understanding your eyeglass prescription

An eyeglass prescription is an order written by an eyewear prescriber, such as an optometrist or ophthalmologist, that specifies the value of all parameters the prescriber has deemed necessary to construct and/or dispense corrective lenses appropriate for a patient.


The parameters specified on spectacle prescriptions vary, but typically include the power to which each lens should be made in order to correct blurred vision due to refractive errors, including myopia, hyperopia, astigmatism, and presbyopia. It is typically determined using a phoropter asking the patient which lens is best, computer automated refractor, and through the technique of retinoscopy. Opticians are not eye doctors and, therefore, are not licensed to write an eyeglass prescription. A dispensing optician will take a prescription written by an optometrist or ophthalmologist and order and/or assemble the frames and lenses to then be dispensed and sold to the patient.


Understanding the prescription

  • OD – Right Eye: usually the top value in an eyeglasses prescription chart. OD is a latin abbreviation for oculus dexter, which means "right eye." The measurements in the OD row are thus for the right eye.
  • OS – Left eye: usually the bottom value in an eyeglasses prescription chart. The measurements in the OS row are for the left eye. OS in Latin is oculus sinister, or "left eye."
  • SPH – Sphere: the horizontal curve of the eye’s lens; (+ or – number between –10 and +10) Also called your prescription’s power, this is how strong your lenses need to be.
  • CYL – Cylinder: indicates astigmatism; (+ or – number between –4 and +4 ) If you have a number for CYL, you, like many glasses wearers, have astigmatism. This simply means the vertical curve of your eye is shaped more like a football than a sphere.
Remember: AXIS goes with CYL. If you have a CYL measurement, you will always also have an AXIS measurement. Likewise, if you don’t have a CYL measurement, you will not have an AXIS measurement.
  • AXIS:  Indicates the degree and direction of astigmatism; (+ number only between 1 and 180) Often this number will be proceeded by an x. You will not have an AXIS if you don’t have a CYL.
    (Note: If a word is in your CYL or AXIS section with no number, you do not have astigmatism; this is there to trick you. We’re watching your back.)
  • PRISM: The majority of glasses wearers will not have a PRISM measurement. If you do, you have a more difficult glasses prescription that requires an optician’s expertise. If there is prism the prism base also should be mentioned.
  • ADD: Only for bifocals/progressive lenses (+ number only, usually up to 5.00) How much magnifying power you need in your bifocal/progressive lenses. 
    (Note: In some prescriptions, this is written in a NV or near-vision section, while the rest of the prescription is written in the DV or distance-vision section.)
Tips:

  1. Pay particular attention to whether the SPH and CYL are positive or negative.
  2. A normal single-vision eyeglasses prescription without astigmatism only needs the SPH. You will also need your Pupillary Distance (PD), which may be included on your prescription as two numbers; add these numbers together and you’ve got your PD. If your prescription doesn't include your PD, you have a few options. First, you can call your optometrist and they may have it and provide it to you. You can also go to a local optician and have them measure it. Or, you can measure it yourself.
  3. If a number is not in the CYL and AXIS spaces, there is no value for either.
  4. You will only have an ADD measure if you wear bifocals/progressives.
  5. SPH, CYL, and ADD are written with decimals. Sometimes there are no decimal points on the prescription. You then get to add them in. 
    (Example: a SPH written as “175” is really “1.75”; a CYL written as “12” would be “1.20”; and an ADD written as “25” would be “2.50.”)
  6. Sometimes, the prescription will not be written on an actual grid. The numbers will, however, likely be written according to the grid shown, with OD on top, OS on bottom, with columns SPH, CYL, AXIS, etc.
  7. If you see the word PLANO in the row of boxes for one eye, you need a “balance lens” for that eye. A balance lens is a non-prescription lens; you need one if only one of your eyes requires vision correction.
  8. Last, but not least, if both of your eyes have the same prescription, only one row of numbers may be written on your prescription.


credits: buyglasses-online, wikipedia, justeyewear