Eyewear Dictionary
For those of you who had difficulty shopping for glasses because of unfamiliar terms,
a simple arrangement of terms.
Eyewear Dictionary
For those of you who had difficulty shopping for glasses because of unfamiliar terms, a simple arrangement of terms
A
Acetate
Acetate is a type of horn-rimmed material that makes glasses. The acetate material is a luxurious material that many people prefer because it is easy to manage and has a wide variety of colors.
Most of the types of horn frames offered by YUN are acetate and express a soft, luxurious color.
AR try-on
AR Try-On is a that lets you instantly see how you look in a pair of eyeglasses or sunglasses—down to the real color, texture, and size of each style—using just your YUN phone.
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 slightly 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.
Axis
Axis is the number on your prescription that determines the direction of your astigmatism correction. The cylinder and the axis always go together.
B
BIO-acetate
Bio acetate is made from natural materials like organic cotton and responsibly sourced wood pulp making the frames both biodegradable and environmentally friendly.
Our bio frames also don’t contain chemicals usually needed to make them more flexible and durable; instead we used organic plasticisers to achieve the same durability.
Same quality, less pollutants- win, win
Balance
Korean minimalism doesn’t simply focus on a less material lifestyle, but on keeping an integral balance.
This philosophy is reflected in our brand identity and practises; the balance between generations, technology and creativity, fashion and function, speed and slowness…
BOHO
YUN BOHO is an eyewear specially developed to protect your eyes from harmful blue light that you might face daily using your smart phone, television, computer monitor, and similar devices. As much as we need these devices, our eyes need the protection. That is why we gave it the name BOHO, 보호 meaning ‘protection’ in Korean.
Brightsun & Mildsun
Beautiful neutral color tints with maximum chromaticity and anti-glare. The visual light transmittance is 15% (brightsun) or 25% (mildsun). It is suitable for all kinds of sports or lifestyle activities under strong sunlight.
Berlin
It is a city that opened YUN first flagship store in October 2015. Father-daughter duo started with the concept and philosophy of providing reasonable and transparent price and high quality glasses in 20 minutes to make YUN a global brand representing Korea. In Berlin, where diverse cultures coexist and always accept new things freely, YUN continues to be a beloved brand.
C
Clip-on
Clip-on is a practical product that can be worn as glasses and used as sunglasses when wearing clip-on. Clip-on can be largely divided into magnetic and ring types. You can use clip-on to create your own unique glasses and sunglasses.
Combi
Combination frames are eyeglass frames made of metal and plastic materials, often of a type that overlaps the top of the temple and rim of the eyeglass frames. Combination frames are relatively light and hard, but they are heavier than gold frames and less durable than horn frames (plastic ones).
Color blindness
Individuals with color blindness perceive colors differently from the way most of us do. It’s very common, and the degree of color blindness can range from mild to severe. (Those with very mild color blindness might not even know that they have it.) It’s usually a genetic condition, meaning that you are born with it. Because inherited color blindness is carried on the X chromosome, it affects more men than women. It is estimated that about 8% of all men and 0.5% of all women have some form of colorblindness.
Cylinder
It refers to the lens power needed to correct for an astigmatism. The cylinder and axis always go together—you can’t have one without the other
D
Demo lens
It is an acrylic lens that is inserted before buying glasses and is designed to maintain the shape of glasses. When purchasing glasses, we recommend changing them to a non-conducting optical lens because wearing glasses as they are in the demo lens condition can have an adverse effect on the eyes.
Experience comfortable glasses with YUN reasonable price policy.
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.
E
Eye
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 interprets.
F
Fati-free
YUN fati-free lenses are comfortable and adaptable for those who experience eye strain or eye dryness due to long-term close-range attention. The distance correction factor is added to the lower part of the lens to relieve eye fatigue when viewing the distance.
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
Flat lens
It's a lens with no prescription. The default selection for the YUN uses a 1.60 refractive index, super water-coated lens.
Farsightedness
Primitive refers to the phenomenon of the retina failing to form a phase and focusing behind the retina. If the retina is not properly formed, glasses can help to form a phase in the retina.
YUN provides a comfortable view through a precise eye exam.
G
Gift card
Preparing..
Glasses
This is what we sell. Glasses.
H
HANA collection
The Korean expression 하나 - HANA - translates to 'one', and also means ‘getting all opinions in one hand’. The new collection pieces are just like that - simple, but all the best functions in one product. High quality material and finishing meets timeless design.
Hard coatting
Hard Coating is a scratch resistance coating. All lenses of YUN are hard coating
Hinge
The screw or interlocking part that connects the end piece to the temple. Hinges are directly related to the balance of the center of the glasses, so they play various roles such as preventing sagging, improving wearability, and changing the design.
I
Independent manufacturing
Co-founder CJ, had been working in the optical industry for 28 years designing and customising unique lenses for businesses before retail component YUN was realised. This heritage in the industry means the design and manufacturing process is accurate and carried out with maximum proficiency and skill.
We think that less is more at YUN, which is why all of our lenses are designed and manufactured in house by our team in Incheon at Opticom. Without a complex or faraway supply chain, we can oversee the processes and work closely to maintain a high level of quality- all while keeping our independent spirit.
J
Jan
Jan - Jan is part of our premium metal collection ‘Hana’. It varies in two colors of rose gold and black.
Its ultra light weight minimizes fatigue when wearing so it's highly popular among those who need to wear glasses at all times. The high-quality, clean and sleek image from metal is great for any outfit and style.
Shop YUN best sellerK
Koera
This is the place where YUN second flagship store is located in Korea. YUN philosophy of seeking simplicity is reflected in the supply and demand of products. YUN Mass Production Lab located in Incheon, Korea, designed and produced lenses directly, dramatically reducing the complex distribution stage. This allows consumers to meet high-quality lenses and eyeglass frames with beautiful designs at reasonable prices, and allows the brand to maintain its own independence and philosophy.
L
Lens
After all, the lenses are the most important part of your glasses- without them, your vision won’t be as crisp and sharp as it should be.
Many of our Opticom employees have been working with us from 2000 when the company was established, so they really know their stuff! We make it so the lenses are highly customisable and finished using technology that enables beautifully wide vision.
Our optimal production system offers solutions to individual customers needs- however unique they might be. We make every effort to provide people with better vision for a better quality of life.
M
Metal frame
frame made of metal material. YUN Yun uses titanium metal to provide you with light and durable glasses.
Mirror
YUN mirror sunglasses lenses are multilayered to reduce glare by an additional 10 to 16 percent. It is also scratch resistant compared to the existing product. Ideal for active sports activities such as bicycles, windsurfing, skydiving, and hang gliding.
N
Nearsightedness
Myopia is a phenomenon in which the retina fails to appear and focuses on the retina. If the retina is not properly formed, glasses can help to form a phase in the retina.
YUN provides a comfortable view through a precise eye exam.
Nose arm
It's made of metal material to support the nose pad
Nose pad
It's a support that touches your nose from the frame of your glasses. All-in-one horn frames without metal pad can be distinguished by world-fit, Asian-fit, depending on the height of the pad. Glasses frames with metal-type nose pads can be adjusted to the height, making it easy to fit the wearer's face
O
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.
YUN prescribes accurate and precise examinations.
P
Phoropter
A foredropter is a device for examining the eyes.Inside the equipment, there are various lenses for accurate eye examination.-YUN can be examined with the latest equipment, a pointer.
Polarized lenses
igh efficient polarizing filters eliminate reflections and improve the visual clarity. It blocks unnecessary or harmful light waves from light bundles. Suitable for winter sports (ski, snowboard), summer water sports (fishing), driving, hiking and golf.
Prism
This is the prescription for correcting son-in-law and cross eye, and it is the prism prescription glasses that correct using the principle of light breaking. If you need a prism correction in addition to manual correction, you need to use a prism lens to have a clear poetic life.
Preform lens
A preform is one of the processing methods of lenses. Prefoam lens is a lens produced by preform processing method. Prefoam calculates and processes curvature at more than 100,000 points from the design of the lens, providing good quality lenses such as distortion minimization, manual improvement, wide vision, and thin thickness. All order lenses of YUN Yoon are made from preform processing lenses.
Prescription
In order to fit the glasses, you need to know the correct lens prescription through the examination. You can get a prescription if you have an eye exam at an eye clinic or an optician's office. Unlike commonly known, decimal obscurity such as 1.0 and 0.8 can be seen, the numbers listed in the prescription numbers indicate the exact condition of the eye. Get your own prescription from YUN Yoon through a thorough examination.
Progressives
IProgressive 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.
R
Refraction
In science terms, refraction is the bending of any wave (but for our purposes, a light wave) as it passes from one medium into another. In eyewear terms, refraction refers to the process of determining your refractive error.
Retina
The nerve tissue that covers the innermost part of the eyeball, converts information about light into electrical information and transmits it to the brain. Through this process, we can see things.
Rim
It refers to the eyeball part as part of an eyeglass frame. The frames are supposed to be marked in size, but among them, the eye size is included. Displays in order of maximum diameter (Rim)-bridge-temple size.
S
Single vision
Glasses lenses that are most commonly used for vision correction are called single-focus lenses. These lenses are customized to correct eye conditions such as myopia, primitive, and astigmatism.
Super hydrophoby multi coating
- Primer : Goes between lens and hard coating. Increases adherence of hard coating to the lens
- Hard : Scratch resistance function
- AR : Increase light transmittance rate up to 99%
- Super Hydrophoby(Lotus) : Resistance from static, dust, water and hydrophoby function to reduces friction over lens surface and protect it from scratch
Stores
YUN flagship store is located in Berlin and Seongsu-dong, Seoul.
[YUN Berlin]
Monday - Saturday,
11:00 - 20:00
tel: +49 30 275 778 20
mail: [email protected]
T
Temple
It means the arm part of the glasses. Glasses frames should be marked with the size of the glasses in order of maximum diameter (lim) and bridge-temple size.
Titanium
Light metal material is semi-permanent, corrosion-free, high elasticity, and durable against external shocks in daily life.
You can find it in YUN Hana collection.
U
Ultraviolet light(UV)
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.
V
Visual acuity
Visibility is the most important sense of five senses with the ability to see and perceive with the eyes. Good eyesight is essential to improve the quality of life. YUN provides a comfortable view through a precise eye exam.
W
Widen your vision
Our main pursuit is to make sure the glasses you wear everyday are as comfortable as possible, but we want to widen your vision in more ways than one. To do this, we host regular workshops, events and talks in store, as well as producing unique lifestyle and culture content on our YUN Journal.
Wicker park
This is a specialty coffee shop in Seongsu branch of YUN Seoul, where you can enjoy a comfortable and not irritating coffee that is compatible with YUN. Enjoy the process of making my glasses with a cup of coffee!
X
X(collaboration)
We are collaboration with people in various fields, hoping to broaden your overall horizons with "Widen your vision." Look forward to YUN future.
Y
YUN package
It's a product that comes with glasses if you buy them. YUN package includes an eyeglass case, a cleaning eyeglass, a guide to eyeglasses management, and a pair of eyeglass case pouches.
Z
Zzz
Sleep at the right time so your eyes can rest.
A
Acetate
Acetate is a type of horn-rimmed material that makes glasses. The acetate material is a luxurious material that many people prefer because it is easy to manage and has a wide variety of colors.
Most of the types of horn frames offered by YUN are acetate and express a soft, luxurious color.
AR try-on
AR Try-On is a that lets you instantly see how you look in a pair of eyeglasses or sunglasses—down to the real color, texture, and size of each style—using just your YUN phone.
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 slightly 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.
Axis
Axis is the number on your prescription that determines the direction of your astigmatism correction. The cylinder and the axis always go together.
B
BIO-acetate
Bio acetate is made from natural materials like organic cotton and responsibly sourced wood pulp making the frames both biodegradable and environmentally friendly.
Our bio frames also don’t contain chemicals usually needed to make them more flexible and durable; instead we used organic plasticisers to achieve the same durability.
Same quality, less pollutants- win, win
Balance
Korean minimalism doesn’t simply focus on a less material lifestyle, but on keeping an integral balance.
This philosophy is reflected in our brand identity and practises; the balance between generations, technology and creativity, fashion and function, speed and slowness…
BOHO
YUN BOHO is an eyewear specially developed to protect your eyes from harmful blue light that you might face daily using your smart phone, television, computer monitor, and similar devices. As much as we need these devices, our eyes need the protection. That is why we gave it the name BOHO, 보호 meaning ‘protection’ in Korean.
Brightsun & Mildsun
Beautiful neutral color tints with maximum chromaticity and anti-glare. The visual light transmittance is 15% (brightsun) or 25% (mildsun). It is suitable for all kinds of sports or lifestyle activities under strong sunlight.
Berlin
It is a city that opened YUN first flagship store in October 2015. Father-daughter duo started with the concept and philosophy of providing reasonable and transparent price and high quality glasses in 20 minutes to make YUN a global brand representing Korea. In Berlin, where diverse cultures coexist and always accept new things freely, YUN continues to be a beloved brand.
C
Clip-on
Clip-on is a practical product that can be worn as glasses and used as sunglasses when wearing clip-on. Clip-on can be largely divided into magnetic and ring types. You can use clip-on to create your own unique glasses and sunglasses.
Combi
Combination frames are eyeglass frames made of metal and plastic materials, often of a type that overlaps the top of the temple and rim of the eyeglass frames. Combination frames are relatively light and hard, but they are heavier than gold frames and less durable than horn frames (plastic ones).
Color blindness
Individuals with color blindness perceive colors differently from the way most of us do. It’s very common, and the degree of color blindness can range from mild to severe. (Those with very mild color blindness might not even know that they have it.) It’s usually a genetic condition, meaning that you are born with it. Because inherited color blindness is carried on the X chromosome, it affects more men than women. It is estimated that about 8% of all men and 0.5% of all women have some form of colorblindness.
Cylinder
It refers to the lens power needed to correct for an astigmatism. The cylinder and axis always go together—you can’t have one without the other
D
Demo lens
It is an acrylic lens that is inserted before buying glasses and is designed to maintain the shape of glasses. When purchasing glasses, we recommend changing them to a non-conducting optical lens because wearing glasses as they are in the demo lens condition can have an adverse effect on the eyes.
Experience comfortable glasses with YUN reasonable price policy.
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.
E
Eye
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 interprets.
F
Fati-free
YUN fati-free lenses are comfortable and adaptable for those who experience eye strain or eye dryness due to long-term close-range attention. The distance correction factor is added to the lower part of the lens to relieve eye fatigue when viewing the distance.
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
Flat lens
It's a lens with no prescription. The default selection for the YUN uses a 1.60 refractive index, super water-coated lens.
Farsightedness
Primitive refers to the phenomenon of the retina failing to form a phase and focusing behind the retina. If the retina is not properly formed, glasses can help to form a phase in the retina.
YUN provides a comfortable view through a precise eye exam.
G
Gift card
Preparing..
Glasses
This is what we sell. Glasses.
H
HANA collection
The Korean expression 하나 - HANA - translates to 'one', and also means ‘getting all opinions in one hand’. The new collection pieces are just like that - simple, but all the best functions in one product. High quality material and finishing meets timeless design.
Hard coatting
Hard Coating is a scratch resistance coating. All lenses of YUN are hard coating
Hinge
The screw or interlocking part that connects the end piece to the temple. Hinges are directly related to the balance of the center of the glasses, so they play various roles such as preventing sagging, improving wearability, and changing the design.
I
Independent manufacturing
Co-founder CJ, had been working in the optical industry for 28 years designing and customising unique lenses for businesses before retail component YUN was realised. This heritage in the industry means the design and manufacturing process is accurate and carried out with maximum proficiency and skill.
We think that less is more at YUN, which is why all of our lenses are designed and manufactured in house by our team in Incheon at Opticom. Without a complex or faraway supply chain, we can oversee the processes and work closely to maintain a high level of quality- all while keeping our independent spirit.
J
Jan
Jan - Jan is part of our premium metal collection ‘Hana’. It varies in two colors of rose gold and black.
Its ultra light weight minimizes fatigue when wearing so it's highly popular among those who need to wear glasses at all times. The high-quality, clean and sleek image from metal is great for any outfit and style.
Shop YUN best sellerK
Koera
This is the place where YUN second flagship store is located in Korea. YUN philosophy of seeking simplicity is reflected in the supply and demand of products. YUN Mass Production Lab located in Incheon, Korea, designed and produced lenses directly, dramatically reducing the complex distribution stage. This allows consumers to meet high-quality lenses and eyeglass frames with beautiful designs at reasonable prices, and allows the brand to maintain its own independence and philosophy.
L
Lens
After all, the lenses are the most important part of your glasses- without them, your vision won’t be as crisp and sharp as it should be.
Many of our Opticom employees have been working with us from 2000 when the company was established, so they really know their stuff! We make it so the lenses are highly customisable and finished using technology that enables beautifully wide vision.
Our optimal production system offers solutions to individual customers needs- however unique they might be. We make every effort to provide people with better vision for a better quality of life.
M
Metal frame
frame made of metal material. YUN Yun uses titanium metal to provide you with light and durable glasses.
Mirror
YUN mirror sunglasses lenses are multilayered to reduce glare by an additional 10 to 16 percent. It is also scratch resistant compared to the existing product. Ideal for active sports activities such as bicycles, windsurfing, skydiving, and gliding.
N
Nearsightedness
Myopia is a phenomenon in which the retina fails to appear and focuses on the retina. If the retina is not properly formed, glasses can help to form a phase in the retina.
YUN provides a comfortable view through a precise eye exam.
Nose arm
It's made of metal material to support the nose pad
Nose pad
It's a support that touches your nose from the frame of your glasses. All-in-one horn frames without metal pad can be distinguished by world-fit, Asian-fit, depending on the height of the pad. Glasses frames with metal-type nose pads can be adjusted to the height, making it easy to fit the wearer's face
O
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.
YUN prescribes accurate and precise examinations.
P
Phoropter
A foredropter is a device for examining the eyes.Inside the equipment, there are various lenses for accurate eye examination.-YUN can be examined with the latest equipment, a pointer.
Polarized lenses
igh efficient polarizing filters eliminate reflections and improve the visual clarity. It blocks unnecessary or harmful light waves from light bundles. Suitable for winter sports (ski, snowboard), summer water sports (fishing), driving, hiking and golf.
Prism
This is the prescription for correcting son-in-law and cross eye, and it is the prism prescription glasses that correct using the principle of light breaking. If you need a prism correction in addition to manual correction, you need to use a prism lens to have a clear poetic life.
Preform lens
A preform is one of the processing methods of lenses. Prefoam lens is a lens produced by preform processing method. Prefoam calculates and processes curvature at more than 100,000 points from the design of the lens, providing good quality lenses such as distortion minimization, manual improvement, wide vision, and thin thickness. All order lenses of YUN Yoon are made from preform processing lenses.
Prescription
In order to fit the glasses, you need to know the correct lens prescription through the examination. You can get a prescription if you have an eye exam at an eye clinic or an optician's office. Unlike commonly known, decimal obscurity such as 1.0 and 0.8 can be seen, the numbers listed in the prescription numbers indicate the exact condition of the eye. Get your own prescription from YUN Yoon through a thorough examination.
Progressives
IProgressive 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.
R
Refraction
In science terms, refraction is the bending of any wave (but for our purposes, a light wave) as it passes from one medium into another. In eyewear terms, refraction refers to the process of determining your refractive error.
Retina
The nerve tissue that covers the innermost part of the eyeball, converts information about light into electrical information and transmits it to the brain. Through this process, we can see things.
Rim
It refers to the eyeball part as part of an eyeglass frame. The frames are supposed to be marked in size, but among them, the eye size is included. Displays in order of maximum diameter (Rim)-bridge-temple size.
S
Single vision
Glasses lenses that are most commonly used for vision correction are called single-focus lenses. These lenses are customized to correct eye conditions such as myopia, primitive, and astigmatism.
Super hydrophoby multi coating
- Primer : Goes between lens and hard coating. Increases adherence of hard coating to the lens
- Hard : Scratch resistance function
- AR : Increase light transmittance rate up to 99%
- Super Hydrophoby(Lotus) : Resistance from static, dust, water and hydrophoby function to reduces friction over lens surface and protect it from scratch
Stores
YUN flagship store is located in Berlin and Seongsu-dong, Seoul.
[YUN Berlin]
Monday - Saturday,
11:00 - 20:00
tel: +49 30 275 778 20
mail: [email protected]
T
Temple
It means the arm part of the glasses. Glasses frames should be marked with the size of the glasses in order of maximum diameter (lim) and bridge-temple size.
Titanium
Light metal material is semi-permanent, corrosion-free, high elasticity, and durable against external shocks in daily life.
You can find it in YUN Hana collection.
U
Ultraviolet light(UV)
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.
V
Visual acuity
Visibility is the most important sense of five senses with the ability to see and perceive with the eyes. Good eyesight is essential to improve the quality of life. YUN provides a comfortable view through a precise eye exam.
W
Widen your vision
Our main pursuit is to make sure the glasses you wear everyday are as comfortable as possible, but we want to widen your vision in more ways than one. To do this, we host regular workshops, events and talks in store, as well as producing unique lifestyle and culture content on our YUN Journal.
Wicker park
This is a specialty coffee shop in Seongsu branch of YUN Seoul, where you can enjoy a comfortable and not irritating coffee that is compatible with YUN. Enjoy the process of making my glasses with a cup of coffee!
X
X(collaboration)
We are collaboration with people in various fields, hoping to broaden your overall horizons with "Widen your vision." Look forward to YUN future.
Y
YUN package
It's a product that comes with glasses if you buy them. YUN package includes an eyeglass case, a cleaning eyeglass, a guide to eyeglasses management, and a pair of eyeglass case pouches.
Z
Zzz
Sleep at the right time so your eyes can rest.