Can Vending Machine

Rumors of part-time riches and bringing in 100 per hour are quite popular in the vending machine business world. You can place vending machines in most commercial spaces such as offices retail shops bowling alleys and more.

Can Pet Beverage Vending Machine Rcp5024 Tradekorea

If Sims slam on the vending machine several times there is a possibility that it will fall on top of them killing them in a similar fashion to the murphy bed.

Can vending machine. Ad China Charging Vending Machines. Owning a vending business could make you that much money with less per-day time spent but the claim is usually more of a marketing ploy from a savvy machine sales company than a strict look. If you need some columns in the bottle machine to vend 20oz bottles then you need to add bottle shims in the pull down boxes shown next to the machine except for the Model 5591 that will vend both DN5800 does not require any shims at all and will vend bottles as well as cans.

120 rows The Vending Machine provides a safe way to make indirect trade with other players. Ad Search Faster Better Smarter Here. To refresh your day with a simple and efforless way -.

As the bigger standalone Master Revolution Master Mix is equipped with a fridge making it suitable for selling snacks soft drinks legal cannabis and much more. Ad China Charging Vending Machines. Vending machines were reintroduced in The Sims 3.

You can start with a few machines and expand your business as time and finances permit. Advantages of a Vending Machine Business. University Life and can be placed on both residential and community lots.

But youll need to sign a contract with the property owner first. The Master Mix vending machine is a slave module that can be associated with all other Harvin cannabis vending machines equipped with touch screen technology. Trusted China Suppliers Verified by SGS.

Snack vending machines are designed such that you can have quick and easy access to different types of packaged snacks such as chips nuts chocolates toffees biscuits etc. Can vending machine is a machine that dispenses cold can drinksServing a well-known list item like coke pepsi 100plus7upMilo Nescafe redbull etc. Ad Search Faster Better Smarter Here.

Trusted China Suppliers Verified by SGS. Machines are listed as can machines will only vend 12 oz cans or 16oz energy drinks or water. Players having ownerbuild permissions for the current island theyre in are able to change and adjust various settings in the user interface.

Other advantages of a vending machine business include. We provide customers world wide with a quality state of art full service vending experience with the largest selection of vending machines including snack vending machines cold soda-drink vendors hot coffee machines cold and frozen food vending. The Vending Machine is an item used to set up shops.

Unlike previous games all sales of sodas and candies are free. All these products are attractively displayed behind a glass door making it easier for customers to choose and at the same time tempting them to grab one on the go. Aside from purchasing the machines which can be financed your capital costs are relatively low.

Realistic Vending Machine Profits Explained. It allows for safe trading through transactions relating to coins.

What Are The Symptoms Of Hodgkin's Lymphoma

14 The nodes may also feel rubbery and swollen when examined. What are the symptoms of Hodgkins disease.

Hodgkin S Lymphoma Hodgkin S Disease Symptoms And Causes Mayo Clinic

The swelling is caused by an excess of affected lymphocytes white blood cells collecting in a lymph node also called lymph glands.

What are the symptoms of hodgkin's lymphoma. When symptoms do occur a common early sign of Hodgkin lymphoma is swelling in one or more lymph nodes usually in the neck. The most common symptom of HD is swelling of the lymph nodes which causes a lump to form under the skin. Also known as Hodgkins Disease Hodgkins lymphoma is a disease in which malignant cancer cells form in the lymph system.

Excessive sweating especially at night. What Are the Symptoms of Hodgkin Lymphoma. Clusters of lymph nodes can be found in the neck armpits groin abdomen pelvis and chest.

People with Hodgkin lymphoma may present with the following symptoms. Hodgkin lymphoma can occur at any age although most people diagnosed are between the ages of 15 and 34 or over 60. Typical symptoms of lymphoma include swollen lymph nodes in the neck or armpits fatigue fever and unexplained weight loss.

Below are some of the first signs of both Hodgkins lymphoma and non-Hodgkins lymphoma that real patients experienced before they sought medical advice. The most common symptom of Hodgkin lymphoma is a swollen lymph node under the skin. Symptoms of Hodgkin lymphoma may include.

Symptoms stemming from pressure of. Signs Symptoms of Hodgkin Lymphoma Hodgkin Lymphoma Cancer Signs. Painless swelling of one or more lymph nodes without a recent infection.

Symptoms of Hodgkin lymphoma The signs or symptoms of Hodgkin lymphoma HL may vary depending on the location of the cancer in the body. The most common symptom of Hodgkin is the painless enlargement of one or more lymph nodes. There are over 500 lymph nodes throughout the body all connected through a network of lymph vessels.

Other types of lymphoma can spread to the area around the brain and spinal cord. The best way to find Hodgkin Lymphoma is to look out for the signs symptoms including a lump under the skin fever sweats or unexplained weight loss. It may then spread to the liver lungs or bone marrow.

Some of the most common first symptoms of Hodgkins lymphoma can include. The swelling is usually painless although some people find that it aches. The most common symptom of Hodgkin lymphoma is a swelling in the neck armpit or groin.

The most common symptom of HL is swollen lymph nodes in the neck underarm groin or chest. Painless swelling in the neck armpit or groin. This often appears as a lump in the neck armpit or groin.

The lump may not hurt all the time but it might hurt. Other health conditions can cause the same symptoms as HL. Frequent Symptoms.

This swelling can occur on any lymph node in the body including the neck upper chest armpit abdomen or groin area. Lump or swelling in neck throat or jaw. First signs and symptoms of lymphoma.

The lymphatic system is a network all around your body an important part of your immune system aka your defence system which is made up of lymphatic vessels and some of our organs. Swelling of the lymph nodes painless often in the neck armpits or groin area. This lump usually isnt painful.

Swollen lymph nodes are the most common symptom of Hodgkin lymphoma and one of the most visible signs of the cancer. Lymphoma is a blood cancer that forms tumours in the lymphatic system. Symptoms from lymphoma affecting the brain Lymphomas of the brain called primary brain lymphomas can cause headache trouble thinking weakness in parts of the body personality changes and sometimes seizures.

What Is Formalin

It is used in particleboard plywood and. Humans produce about 15 ounces of formaldehyde a day as a normal part of our metabolism.

What Is Formaldehyde Definition Uses Structures Biology Class 2021 Video Study Com

Formalin actually contains very little monomeric formaldehyde.

What is formalin. Formaldehyde is a colorless strong-smelling gas used to make household products and building materials furniture and paper products. It is a colorless gas at room temperature or available as a liquid called formalin. In addition formaldehyde is commonly used as an industrial fungicide germicide and disinfectant and as a preservative in mortuaries and medical laboratories.

Formaldehyde made predominantly by the oxidation of methanol is a gas but is generally handled as a 37 percent solution in water called formalin. Formaldehyde is a colorless flammable strong-smelling chemical widely used by industry to make home building products. Also residents living in new-construction homes or even those.

While fromalin can cause nausea coughing and burning sensation in eyes nose and throat in the short term it can cause cancer if consumed over a long period of time. Its also a by-product of car combustion but you might be surprised to know formaldehyde naturally occurs albeit in small amounts in most living organisms including humans. Formaldehyde is a naturally occurring substance made of carbon hydrogen and oxygen.

It dissolves easily in water but does not last long there either. And yes formaldehyde-releasing preservatives are. It is used in tanning preserving and embalming and as a germicide fungicide and insecticide for plants and.

My mother always told me to wash towels before using them that it gets rid of the chemicals as well as making them more absorbent. Formaldehyde is used to make bonding glues. It is also a by-product of combustion and certain other natural processes.

Formaldehyde is quickly broken down in the air generally within hours. It can also increase shelf life of fresh food. Formaldehyde is readily soluble in water and is commonly distributed as a 37 solution in water.

Formalin is derived from formaldehyde which is a known cancer-causing agent. Inhaled formaldehyde is rapidly metabolized and ultimately converted to carbon dioxide and exhaled. When dissolved in water it is called formalin which is commonly used as an industrial disinfectant and as a preservative in funeral homes and medical labs.

It is used to preserve bodies in mortuaries. Formaldehyde also occurs naturally in the environment. How is formaldehyde used.

Facts About Formaldehyde Formaldehyde US EPA. It is used to inactivate certain viruses so they are unable to cause disease when making the flu vaccine It is also used to manufacture antibiotics and other drug capsules. Most of it forms short chains of polyformaldehyde.

It can also be used as a preservative in some foods and in products such as antiseptics medicines and cosmetics. A saturated solution contains about 40 by volume or 37 by weight of the gas plus a small amount of a stabilizer usually 10-12 methanol. Formalin a 10 solution of formaldehyde in water is used as a disinfectant and to preserve biological specimens.

Formaldehyde is a chemical used widely by industry to manufacture building materials and numerous household products. Environmentally formaldehyde may be found in the atmosphere smoke from fires automobile exhaust and cigarette smoke. Formalin is a solution in water of the gas formaldehyde CH 2 O.

Pathology A 37 solution of formaldehyde gas in water that reacts with the amine groups of proteins and DNA which acts to disinfect and when buffered to denaturefix tissues for. A clear aqueous solution of formaldehyde and methanol used especially as a preservative. The Centers for Disease Control and Prevention CDC says formaldehyde is present in just about all of our homes especially those with smoking allowed.

A small amount of methanol is often added as a. Apparently using formaldehyde in towels sheets etc is very common to make them crease resistant and stop and mold etc from forming on them. It is produced in small amounts by most living organisms as.

Formaldehyde is widely used to manufacture building materials and.

Skin Cancer Rates

About 2000 people die from basal cell and squamous cell skin cancer each year. Is estimated at 81 billion.

Figure 3 Age Adjusted Melanoma Incidence Rates Actual And Projected By Sex 1975 2020 The Surgeon General S Call To Action To Prevent Skin Cancer Ncbi Bookshelf

However African Americans have much worse outcomes.

Skin cancer rates. The rate was higher for men 2186 per 100000 than women 1826 per 100000. Five years after diagnosis 925 percent of women were alive compared to 873 percent of men. About 48 billion for nonmelanoma skin cancers and 33 billion for melanoma.

Alcohol All Cancers Alzheimers Dementia Anemia Asthma Birth Trauma Bladder Cancer Breast Cancer Cervical Cancer Colon-Rectum Cancers Congenital Anomalies Coronary Heart Disease Diabetes Mellitus Diarrhoeal diseases Drownings Drug Use Endocrine Disorders Falls Fires Hepatitis C HIVAIDS. 5 Nonmelanoma skin cancer The diagnosis and treatment of nonmelanoma skin cancers in the US. Melanoma of the skin is the 19th most commonly occurring cancer in men and women.

This is a list of countries by cancer frequency as measured by the. There were nearly 300000 new cases in 2018. Overall the lifetime risk of getting melanoma is about 26 1 in 38 for whites 01 1 in 1000 for Blacks and 06 1 in 167 for Hispanics.

Skin cancer survival rates in women are higher than survival rates in men at all ages and stages of cancer. In males in the UK melanoma skin cancer is the 5th most common cancer with around 8200 new cases in 2017. About 7180 people die from melanoma each year.

About 2000 cases of MCC are diagnosed in the United States each year. In females in the UK melanoma skin cancer is the 5th most common cancer with around 8000 new cases in 2017. 12 MCC tumors can appear on areas of the skin exposed to the sun but not in all instances.

Older adults and people with a suppressed immune system have a higher risk of dying from these types of skin cancer. Merkel cell carcinoma MCC is a rare and aggressive form of skin cancer. An examination of Medical Expenditure Panel Survey data suggests that each year about 43 million adults are treated for basal cell and squamous cell carcinomas at a cost of about 48 billion.

Death Rate Per 100000. Data on basal cell and squamous cell carcinomas the most common types of skin cancer are not normally collected by central cancer registries. Melanoma is 20 times more common in white people than in African Americans.

Increased by 77 percent between 1994 and 2014. Incidence rates for melanoma skin cancer in the UK are highest in people aged 85 to 89 2015-2017. The risk for each person can be affected by a number of different factors which are described in Risk Factors for Melanoma Skin Cancer.

They can appear as pimple-like lumps and can be skin-colored purple red or bluish red. For example if the 5-year relative survival rate for a specific stage of melanoma of the skin is 90 it means that people who have that cancer are on average about 90 as likely as people who dont have that cancer to live for at least 5 years after being diagnosed. The top 20 countries with the highest rates of melanoma of the skin in 2018 are given in the tables below.

And here are the five states with the lowest rates of skin cancer. Where do these numbers come from. Based on the percentage change in melanoma skin cancer ICD10 C43 incidence rates from 19 cases per 100000 men between 2004-2006 to 29 cases per 100000 men between 2014-2016 Based on the percentage change in melanoma skin cancer ICD10 C43 incidence rates from 9 cases per 100000 people aged 25 to 49 between 1993-1995 to 16 cases per 100000 people aged 25 to 49.

Incidence rates of skin cancer cutaneous malignant melanoma have increased more than 550 in males and 250 in females since the early 1980s in. 51 rows Cancer frequency. The rate of deaths from these skin cancers have been declining in recent years.

The annual cost of treating skin cancers in the US. The age-standardised rate for all cancers including non-melanoma skin cancer for men and women combined was 1979 per 100000 in 2018. Squamous cell carcinoma which accounts for nearly 20 percent of all skin cancers diagnosed in the US is somewhat more aggressive and may be.

The five-year survival rate of melanoma for white people with skin cancer is 94 percent compared to only 69 percent survival in black people notes the American Cancer Society.

Pulmonary Mac Infection

To determine predictors of 5-year mortality in pulmonary Mycobacterium avium-intracellulare complex MAC disease. Overall 5-year mortality was 280.

Pulmonary Mycobacterium Avium Complex Infection Radiology Reference Article Radiopaedia Org

In this clinical setting MAC has.

Pulmonary mac infection. Article in Japanese Kikuchi T1. For nodular disease the risk factors are being Caucasian female average age between 60 and 70 and having bronchiectasis. The clinical syndromes associated with each are clinically indistinguishable.

Mycobacterium avium complex MAC is the major pathologic nontuberculous mycobacteria causing lung disease LD in humans worldwide. MAC includes two closely related species Mycobacterium avium and Mycobacterium intracellulare and may also be referred to as MAI. Pulmonary Mycobacterium avium complex MAC infection causes chronic pulmonary diseases.

1Department of Pulmonary Medicine Tohoku University Hospital. Species in the complex include Mycobacterium avium Mycobacterium intracellulare and Mycobacterium chimaera latter recently added. MAC lung disease is an infection caused a group of bacteria called Mycobacterium avium complex MAC.

Pulmonary MAC infections affect the lungs. Pulmonary disease due to a species within MAC 12. MAC Lung Disease is acquired from the environment soil air natural waters tap water etc.

Retrospective study of 164 patients diagnosed with pulmonary MAC disease between 1999 and 2005 and followed for 5 years. This is the most common type of MAC infection and mainly affects people who have lung disease. The incidence of nontuberculous mycobacterial NTM pulmonary disease caused by Mycobacterium avium complex MAC in apparently immune-competent people is increasing worldwide.

Mycobacterium avium complex MAC infection is known to cause disseminated disease in patients with AIDS Since the advent of HAART the incidence of disseminated MAC infection has decreased dramatically Although this pathogen has been known to frequently colonize lung secretions of HIV-infected individuals to our knowledge only 20 cases of isolated pulmonary MAC infection. MAC lung disease is manifested either by fibrocavitary radiographic changes similar to pulmonary tuberculosis or by bronchiectasis with nodular and reticulonodular radiographic changes. The MAC disease in AIDS is widely disseminated throughout the body and rarely involves the lung while pulmonary MAC only involves the lungs.

Symptoms of disseminated MAC infection include. Therefore we hypothesized that MAC may be linked with a disease-susceptibility gene and determined human leukocyte-associated antigens HLA in patients with pulmonary MAC infection. Slow-growing nontuberculous mycobacteria.

We performed a systematic review of the published literature on five-year all-cause mortality in patients with MAC lung disease and pooled the mortality rates to give an overall estimate of five-year mortality. Although the burden of MAC-LD has increased over the past two decades treatment remains difficult because of intolerance of long-term antibiotics lack of adherence to guidelines and disease recurrence. Although pulmonary MAC disease tends to have variable disease progression predictors related to disease progression have not been fully established.

MAC is primarily a pulmonary pathogen that affects individuals who are immune compromised eg from AIDS hairy cell leukemia immunosuppressive chemotherapy. MAC occurs in the natural environment and the common source of infection appears to be water soil or dust with human-to-human transmission considered uncommon 13As an opportunistic pathogen MAC causes disseminated disease in immmunocompromised hosts such as individuals with HIV infection. MAC lung disease seen in HIV negative non-AIDS patients is a chronic lung infection and early-on is often misdiagnosed as chronic bronchitis or recurrent pneumonia.

The symptoms of pulmonary MAC infection start slowly get worse over time and may last for weeks to months. HLA phenotypes were tested in 59 patients with pulmonary MAC infection and diagnosed according to the criteria of the American Thoracic Society. MAC is one of a large group of nontuberculous mycobacteria NTM and the most common cause of NTM lung disease in the US.

Pulmonary MAC disease and the mycobacterial genotyping. Because pulmonary MAC infection typically causes pathological abnormalities in the more distal airways we reviewed the radiographic location of the squamous cell cancers in the MAClung cancer group looking for potential concordance with the location of MAC infection. MAC pulmonary lung disease major susceptibility risk factors depend on which of the two types of disease are present.

People with pulmonary MAC infections may experience cough weight loss fever fatigue and night sweats. This latter form of MAC lung disease termed nodular bronchiectatic NB MAC lung disease is the most common form of MAC lung disease in the United States. Among 117 patients with microbiological outcomes 54 were treated treated MAC patients and 24.

How To Make Cannabis E Juice

The process of making THC e liquid involves two stagescreate a potent cannabis concentrate then transform that concentrate into an e-liquid the same kind found in e-cigarettes without the nasty nicotine. Place your decarbed cannabis in the mason jar with the liquid solution and shakeswirl well.

How To Guide For Creating Your At Home Cannabis Vape Oil

Once mixed place it in the pre-boiled water and swirl the concoction every 20 minutes for roughly 2 hours and 30 minutes.

How to make cannabis e juice. You want to get a deep green coloring to the liquid. Your vaporizer might not reach the necessary heat to make this conversion happen. In order to do this you simply need to put your weed in the oven on a Pyrex bowl.

Stir until completely combined. Then add in your marijuana so it fits evenly in the pot. THC Vape Juice is a cannabis-infused liquid product thats designed specifically for vaping.

Leave the heat on low and set the timer for 20 minutes. In a ceramic bowl use a spoon to flatten your gram of wax shatter or other hash oil. Place your closed jar in cold water and let it come to a boil Boil on low for 2 to 3 hours.

Take your concentrate out of the microwave and add about the same amount of your liquid solvent in a 11 ratio. You use it by loading up a Vaporizer or Vape Pen with the oil turning it on to heat the oil and inhaling the smooth vapor it produces. 1 gram of hash oil wax shatter or rosin is best Bottle of your preferred e-juice mix of PG and VG.

There are many methods to steeping but the easiest method is to cap your home-made e-juice bottles and let them sit in a dark cool place for a few days. A minimum of 35 grams of high quality loose leaf bud. If a juicer is not available try blending ingredients in a high-speed blender along with 1 cup of apple juice to help it blend smoothly then blend on high speed until uniformly combined.

Cannabis e-liquid is a very high potency form of marijuana and making it at home can be a very economical way of smoking your stash. This is the ultimate guide on how to create your own homemade high potency cannabis e-liquid. The color of the juice will change to dark green meaning that it is ready for use.

Cannabis only becomes psychoactive when heat is applied converting THC-a into THC. This a special food grade mix of Propylene Glycol used to transform. Once the base is created its just a matter of adding flavors or infusing herbs into the base until the desired taste and concentration is reached.

Place your oil shatter or wax in a ceramic bowl. It isnt awfully hard to make your own vaporizer liquid and it certainly does not break the bank. In order to make marijuana e liquid youll need.

Adding 20 ml of propylene glycol to 5 ml filtered mixture will result in 25 ml of Cannabis E-juice. You might know THC Vape Juice by various names such as Cannabis Vape Oil or THC E-Liquid. The first step in making your cannabis e-juice is to decarboxylase the weed.

The Cannabis E-juice can always be diluted with propylene glycol or the alcohol concentration can be reduced by reheating the mixture. Put the cooking pot on the stove-top with the burner on low and pour the e liquid solution in. A juicer machine will work best for the cannabis juice recipe.

Break up your raw cannabis buds by hand into relatively small pieces and dump them into a Pyrex or other heat-safe glass jar. Once the herb is cooled down place it in a sealable mason jar holding the solution and mix it well. Stir the mixture up until it.

Cover it with parchment or wax paper to keep it from sticking to the spoon. Pour just enough vegetable glycerin VG over the buds to saturate them but be careful not to add an excessive amount. The cannabis juice is cannabis for a juice boost or welcome cocktail at an infused dinner party.

Place the bowl in the microwave using the defrost setting until the concentrate is runny. You may adjust them to fit with your fork.

20 400 Vision

Go get a computer with a 4K screen about 40 wide. In some cases people with very bad vision can only have their vision corrected to 2070 meaning they can see objects from 20 feet away that others can see at 70 feet.

How Bad Is 20 100 Eye Sight Quora

When the vision in the better eye with the best possible glasses correction is.

20 400 vision. The second or bottom number is the distance someone with normal vision can. Answered on Jan 24 2013. What Does 20400 Mean.

Since there are many ways to correct a vision deficiency you and your doctor can talk about what solution works best for you and your lifestyle. The numbers 2020 or 20400 stand for the quality one can see from a certain distance. 20400 does not correlate to your exact.

LASIK Eye Surgery. His vision is likely not 20400 with glasses or contacts 2. 20400 means you can see an object at 20 feet while other people can see it at 400 feet.

A visual acuity of 20200 or less in the better-seeing eye with best conventional correction meaning with regular glasses or contact lenses. So if you have 20400 vision you would have to be at 20 feet to see what one with standard vision would see at 400 feet. Its critical to talk about your vision with your doctor.

You need an ophthalmologist to determine the exact correction. 2070 to 20160 this is considered moderate visual impairment or moderate low vision. There is not a direct correspondance between 20400 vision the big e on the charts and the values needed to correct it.

So when a person stands 400 feet from the large E on the eye chart each element of the E subtends one minute of arc. The first 20 in the vision score is constant and the second number is different. The denominator bottom 400 is a comparison to someone with standard vision.

What would 201 vision look like. Testing your vision and coming up with a ratio like 2010 or 2040 measures your visual acuity. So if you can read the 40 line your vision is 2040 and a person with good vision should be able to read that line from 40 feet away while you have to get up to 20 feet to barely read it.

The next year it had gotten worse. I dont think it is considered blind because I only have the corrective lenses needed restriction on my license. Then on a routine eye check at school he had 2050 in one eye and 2055 in the other.

3 years ago had 2020 vision. I thought I was the only one with vision that bad. His near vision without glasses or contacts is likely near 2020 JCH MD Comment.

If your vision score is 2040 you dont have to live with it. So What Does 20400 Mean. A person with 20400 eyesight needs to be within 20 feet of an object to see it clearly.

Legal blindness is defined as having a visual acuity of 20200 or worse in the better eye with best possibl. Tools to Help Sharpen Your Vision. If your eyesight is 20400 you are legally blind.

There will be no changes to other Yahoo properties or services or your Yahoo account. As you may be learning at this point this is all pretty rough despite those convincing looking decimal points in a prescription like -425. All eye exams have been performed by the same Dr.

Yahoo Answers is shutting down on May 4th 2021 Eastern Time and beginning April 20th 2021 Eastern Time the Yahoo Answers website will be in read-only mode. In this case the person has what is known as low visual impairment. A visual acuity of -400 is roughly equivalent to 20400 vision.

A person with 2040 vision should consider contacts or glasses to improve their eyesight if possible. 12yr old with 20400 vision nurse555. It will be a combination of or - power along with some degree of astigmatism.

With glasses my vision is 2040. For an example the bottom number in the term 20400 is the distance at which the detail of each letter subtends one minute of arc. However a person with normal vision can see the object clearly from 400 feet away.

Try watching an entire movie like that - It will be impossible. I think it is just really bad vision. The first or top number is the distance a person is standing from the eye chart.

This is a 20200 visual acuity measurement correlated with. Definition of legal blindness states this about visual acuity. 2030 to 2060 this is considered mild vision loss or near-normal vision.

Part 1 of the US. Now this year his eye exam revealed his vision is 20400 in both eyes. 20200 or worse this is considered severe visual impairment or severe low vision.

Now find some 4K youtube content and scale the window down to about the size of a postage stamp. I am only 24 and have such bad vision. Your eye doctor can help to sharpen your vision.

The higher the second number the worse your eyesight and the lower the second. My vision is 20400. If you have 2040 visual acuity you see twice as bad as the average person.

You can find more information about. Notify me of new activity on this question. We measure your quality of vision at 20 feet-this is the numerator top twenty.