A to Z

1. Acetate
 : The name of the Material, It’s durable, and Luxury,, hypoallergenic, and capable
 of holding exceptionally rich colors which makes it an ideal material for eyeglasses.
2. ADD
It stands for the additional correction that you need for reading.
 It is used in bifocal, Multifocal glasses, reading glasses.
  It represents the additional power over the distance prescription.
 Look at the chart above.
 Distance power Right eye (OD)  (-3.75-1.00 axis 90 ) + Add +1.50=(-2
.25-1.00axis90) is Reading power

3. Amblyopia
: Amblyopia is an inability to see clearly through one eye.
 It arises during childhood, typically when the nerve pathway between
 the brain and eye doesn’t develop quite normally,
and for this reason the eye doesn’t “learn” to see correctly.
Amblyopia is sometimes referred to as “lazy eye” but it’s not very nice
to call anything “lazy,” including your eye. So we prefer the scientific term.

4. Anti-reflective coating
: High-quality super-hydrophobic treatment.
This step is especially important for those who work with computers and
 it also keeps your glasses looking so fresh and so clarity.

5. Astigmatism

: Astigmatism is a common optical condition which results in blurry vision
(and, if uncorrected, sometimes a headache).
It results when the curve of your cornea is slight irregular in shape,
which prevents light from focusing properly on the back of the eye.
This prevents you from seeing with perfect sharpness.
The good news: A pair of glasses can help compensate for astigmatism.

6. Axis
: “Axis” is the number on your prescription that determines
  the direction of your astigmatism correction. The cylinder and the axis always go together. you can't have one without the other!

7. Base curve (contact)
:  Base curve is also included on a contact lens prescription which
   helps the lens fit properly. (between 8.3~9.2)

8. Blue Light Lenses

: Blue light is a subset of light within the visible light spectrum;
  it’s emitted by the sun as well as screens on computers, phones, and other electronic devices. Our blue-light-filtering lenses, well. 
 They filter out a higher percentage of
 blue light than any other optical lenses we offer. 

9. Contact Lens
: It is Medical device to correct myopia. farsightness, and astigmatism.
  There are also glasses that are used for vision correction,  But the big
  different is that contact lens make direct contact with the cornea .
  Depending on the Material.  it can be classified into hard contact lenses
  and soft contact lens.

10. Diameter

: You may find a diameter measurement included on a contact lens prescription, which is just the width of a contact lens in 'mm'.  
(Most contact lenses are between 13.8mm and 14.8 mm wide.)

11. Dilation
: Eye care professionals will sometimes dilate your pupils during an exam to get a better look at your retina.
This simply means that your pupils will be widened (or dilated), usually using special dilating eyedrops.
The downside of getting your eyes dilated is that it makes your vision blurry and your eyes extra-sensitive to light for a few hours, or sometimes a bit longer.
Sunglasses help a bit. ( Safety tip : It’s not a good idea to drive for several hours aft.
 12. Diopter
: A diopter is a unit of measurement, like “gram” or “ounce.”
Instead of measuring mass, however,
it measures the refractive power of a lens in other words, it measures optical power.
 13. Eyes
: The circular thingies on your face that give you an excuse to wear cool glasses.
The eye is an insanely complex organ, but it helps to think of it like a camera: It has a lens, it collects incoming light, and it provides an image that your brain interpret. 

14. Fitting
: Do your frames fit? Here’s how to tell.
Pupils should be near the center of the lens.
Lenses shouldn’t extend past the side of your face. 
Eyebrows should not be inside the glasses.
When you smile, your cheeks shouldn't push the frames up.
Frames shouldn’t slide down your nose.
But, if the frame are too tight, your ears and nose hurt. 

 15. Glasses 
: The eye of refractive error correction of, or the eye is mechanism to protect
or adorn the body. Glasses are composed of frame and glasses(Lens)

16. Health Spending Account
Sort of like FSAs, health spending accounts (or HSA for short)
allow you to set aside pre-tax money to use on approved health care expenses like, say, prescription glasses or prescription sunglasses, contacts...

17. High-index lenses
“High-index lens” is a fancy phrase for a type of thin plastic lens
that comes in handy for some higher prescriptions.
Being able to see clearly greatly improves your quality of life.
When your vision is properly corrected, you can see better to drive,
watch a movie, participate in meetings and perform many other activities.
 Contact lenses allow you to enjoy the benefits of clear vision without having to wear prescription eyeglasses and can simplify vision correction.
18.Hyperopia : Farsightedness
19. Monovision
Monovision is sometimes prescribed in contacts.
It’s a pretty neat refractive correction
that works by making one lens for distance and the other for near vision.

20. MyopiaNearsightedness

If you are nearsighted, you have trouble seeing distant objects.
Another word for it is “myopia.” If you’re sitting in the back
row of a movie theater and the screen is blurry?
that would be nearsightedness. 

21. Nose pads
Twin pads that rest on the sides of your nose and ensure a snug fit.

22. Optician
An optician is an eye care professional who is trained to interpret,
fit, and dispense prescription eyewear.
They don’t provide you with the prescription itself, but they make sure everything is up and running perfectly after you’ve gotten a prescription from an eye doc.

23. Optometrist
An optometrist is the doctor who gives you a prescription for glasses and or contacts. They can also diagnose eye diseases and prescribe some medications.

24. Ophthalmologist
In addition to being an incredibly hard word to spell, an ophthalmologist is a medical doctor who specializes in the treatment and diagnosis of eye diseases,
as well as in eye surgery. This person can also prescribe medications, glasses, and contacts.

25. Plano
“Plano” refers to a lens without a prescription. Just a plain ole’ plano.

26. Polarized lenses

: Polarized lenses eliminate glare, making it easier for you to see
without straining your eyes. How do they work? Physics, punk! Light waves vibrate in different directions, and most of the light waves that cause “glare” those shiny reflections off a pool or a highway are horizontal. Polarized sunglasses have teensy vertical filters that prevent horizontal light waves from entering.  Voilà: no glare. It’s so simple, yet so cool.

27. Polycarbonate
Polycarbonate is an über tough transparent plastic with exceptional impact resistance. (It won’t break if you drop it, unlike eggs, crystal vases, fine china, water balloons, etc.)

28. Prescription
A prescription is a formula for making the best pair of eyeglasses for you.
Think of it like a recipe with different ingredients: You’ve got your sphere (to indicate the strength of the lens you need), your cylinder (which indicates the lens power needed to correct astigmatism), and your axis (which indicates
where to place the lens correction for astigmatism), among other pieces of information.

29. Prism
This is a piece of information that may appear on your prescription.
If your doctor includes a prism correction on your prescription,
you’ll see a little triangle symbol next to it, like this: ∆

30. Progressives
Progressive lenses are like a fun “two-for-one” deal,
offering multiple focal corrections all in the same lens
(distance correction on top, intermediate in the middle,
and reading correction on bottom).
This means you can see your whole field of vision
without switching between multiple pairs of glasses. 

31. Pupil
“Pupil” is a fun word to say. It’s the part of your eye that light passes through—the little hole right smack in the middle. Humans have circular pupils, but a lot of animals have crazy-shaped pupils, like geckos. We’re not even sure how to describe the shape of a gecko pupil. It’s almost like a piece of beef jerky.
Anyhow, back to science. Your pupils expand and contract depending on the light conditions surrounding you. When light is scarce, your pupil expands;
when the sun is blazing, your pupil contracts to limit the amount of light that enters. Like a camera aperture.

32. Pupillary distance

Your pupillary distance is...drumroll...the distance between your pupils.  
It’s a handy measurement that helps align your lenses to fit the frames you choose. Your pupillary distance can be measured in a number of ways—there’s even a device called a “pupillometer.” 

33. Retina
The retina is a light-sensing layer of tissue lining the inside of your eye.
Think of it this way: If the eye is a camera, the retina is your photographic film.

34. Single-vision lenses
Single vision lenses correct for one field of vision (usually for distance or reading)
35. Sunglasses
:is a vision protection device used as a term for eyeglasses, and has lenses that are colored black to prevent strong light from reaching the eye.
36. Titanium
Titanium is a strong, durable substance that holds up well under force. (Just like you.) We use it to make glasses because it has a high strength-to-weight ratio, which makes it ideal for an item that rests on your nose. Also: Titanium never rusts.
Its symbol is Ti, like the rappeer .
Titanium was discovered in 1791. Other fun things that occurred in 1791: Vermont became a state, the guy who invented Morse code was born, and the world’s first Sunday newspaper was published. Yeah, it was a good year.

37. Toric
Geometry geniuses may remember that toric means having two independent curves instead of one. What’s this have to do with my eyes? you might ask. Well, toric contact lenses are used for people with astigmatism, so the prescription will have both a Cylinder (CYL) and an Axis value.
38. Transition 
:In the words, the color change lens also called a dimming lens, and it refers to a lens whose color changes when it receives light (ultraviolet rays) as the test says. the color change lenses that are commonly used are gray and brown, but their color and change are becoming more diverse. 

39. Ultraviolet light

Ultraviolet light is a form of electromagnetic radiation that surrounds us, but it’s not visible with the human eye. Our main source of UV light is the sun. (If you’re overexposed to UV light, you can get a sunburn. Be safe out there, guys.)

40. Visual acuity

Visual acuity is a schmancy way of saying “how well you can see.”
You may have heard the term “20/20 vision” tossed around. That term describes “normal” vision. If you have 20/20 vision, you can see at 20 feet what a person with normal vision would see at 20 feet. It’s possible to have better than average vision—some people, for example, have 20/15 vision, which means they can see at 20 feet what most people can only see at 15 feet! (#jealous).

41. Visual field

Your visual field (or “field of vision”—same thing) is the area that you are able to see when your eyes are in one fixed positions.

42. WOW~
 Wow! You are My Customer!
We promise.. Good Quality, Style, Price and happy Service.