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Ishihara Color Test

Ishihara Color Test Instructions

Plates 1 – 17 each contain a number, while plates 18 – 24 contain one or two wiggly lines. To pass each test you must identify the correct number, or correctly trace the wiggly lines.

The Ishihara Color Test for Color Blindness

The test is used to identify which colors you are able to identify as well as calculate whether your vision is color deficient in any specific pattern. While the most common form of color blindness is red and green, this test is used to assess other, less common forms of color blindness and gauge the severity as well.

The Ishihara color test is used at our Long Island office to help patients who are seeking to start a career as a police officer, firefighter, or possibly even a pilot in the airforce.


HRR Pseudoisochromatic Color Vision Test

eye exam for the whole family in rockville center long island

The HRR (Hardy Rand and Rittler) Pseudoisochromatic Plates

Interested in becoming a pilot but are held back from possible color blindness or color vision deficiency? Scleral Lenses & Keratoconus Center At Diamond Vision provides the most advanced color vision test available — the HRR Pseudoisochromatic test.

An approved test by the FAA, assessing your vision can be done at our practice to help you achieve your goals in becoming a pilot. With over 60 years of scientific support, the HRR test has been used for congenital and acquired testing, defect testings, and positive classifications of normals.

Color Vision Tests like the HRR Pseudoisochromatic Plate Test are Required for:

  • Police / law enforcement
  • Pilots / aviation
  • Army / Military.

The sophistication behind the construction of the tests virtually eliminate the potential for memorization and malingering. Accurate and precise, this color test will calculate and categorize your specific case of color vision. Each of the six plates allows for efficient color deficiency screening of yellow, blue, red, and green colors as well as separate between Normals and Defectives. Call our vision center for more information.

Color Vision Testing For The FAA, US Army, FDNY, TSA, & NYPD

F 16 Fighting Falcons above New York City(2)

Color Vision Testing For Military, Aviation & Federal Jobs Serving New York City, Brooklyn, Queens & Long Island.

At Diamond Vision, located in Rockville Centre, Long Island, we offer comprehensive color vision/color blind testing for federal employees, pilots, and first responders. Our eye doctor will take the time with each patient to perform comprehensive evaluations and testing as well as discussing options for improving their color perception. We are proud to offer some of the most advanced testing methods for pilots including the Optec 900 Color Vision test for the FAA, as well as all the major testing used to determine eligibility for careers that require color

  • Farnsworth Lantern Flashlight
  • Ishihara
  • Optec 900 Color Vision
  • Farnsworth D-15
  • Farnsworth D-100
  • Lanthony Desaturated
  • 15 Hue Test

Color Vision Testing For Pilots, FAA Requirements

Pilots seeking to pass their medical requirements for color vision must pass an FAA approved color vision test. Failure to pass the test will result in a limited license that restricts night flying and color signal control. Passing the required testing such as the Optec 900 Color Vision, Ishihara, and Farnsworth Lantern Flashlight, alternate color blindness tests given by our eye doctor, once submitted to your Aviation Medical Examiner, will exempt the need for taking other color blindness test for an FAA medical of any class and will not cause any restrictions. Failure of your initial color blindness test may result in restrictions on what types of tests can be done in the future.

To submit your test results mail first class or registered mail to:

Federal Aviation Administration Civil Aerospace Medical Institute, Bldg. 13 Aerospace Medical Certification Division, AAM-300 6700 S. MacArthur Blvd.Oklahoma City, OK 73169

Color Blind Testing For The US Military

Being color blind can limit your choices of MOS, the US military currently uses either the Farnsworth Lantern Flashlight (FALANT) test or Ishihara test, with different branches having different thresholds. While there are options for the colorblind in the US military, such as combat arms, supply, military police, and administrative jobs, there are severe limitations for many military career tracks. Because color is used to identify wiring, maps, and many other elements of a job, the US military places restrictions for those that fail to meet the color vision threshold for that service branch and job requirement.

Color Blind Testing For NYPD

The NYPD requires that police officers pass a color vision test. The first test is the Ishihara test if the candidate fails the Ishihara test then they are required to pass the Farnsworth D15 test.

Important Note: The information presented is accurate to the best of our knowledge, however requirements for the FAA/TSA/US Military/FDNY/NYPD do change occasionally. At Diamond Vision, we respect the men and women serving our country and communities and try our hardest to provide the highest quality eye care services to our pilots, service men and women, and first responders. We thank you deeply for your service. In addition to color vision testing, Dr. Galan also specializes in contact lenses that are worn at night, that leave you with 2020 vision during the day without the need for glasses or contact lenses. This LASIK alternative is favored by military, law enforcement, and firefighters that require excellent vision but may be encumbered by traditional means of vision correction. Click here to learn more about OrthoK nighttime contact lenses.

Want to learn more about color blindness? Are you interested in experiencing color more vividly in your day to day life?

Click here to visit our color vision page.

Inside a Life With Color Vision Deficiency

What’s it like to be color blind? Contrary to what the name implies, color blindness usually does not actually mean that you don’t see any color, but rather that you have difficulty perceiving or distinguishing between certain colors. This is why many prefer the term color vision deficiency or CVD to describe the condition. CVD affects men more than women, appearing in approximately 8% of men (1 in 12) and .5% of women (1 in 200) worldwide. 

Having color vision deficiency means that you perceive color in a more limited way than those with normal color vision. This ranges from mild, in which you may not even be aware that you are experiencing color differently, to severe, which is perhaps the more appropriate from to be called “color blind” and involves the inability to see certain colors. 

CVD can be inherited; it is caused by abnormalities in the genes that produce photopigments located in the cone cells in your eyes. The eyes contain different cone cells that fire in response to a specific color, blue, green or red and together allow you to see the depth and range of colors that the normal eye can see. The type of color blindness and therefore the type of color vision that is impaired, is based on which photopigments are abnormal. The most common form of CVD is red-green, followed by blue-yellow. Total color blindness or the complete inability to perceive color is quite rare. About 7% of males have congenital color blindness that they inherit from the mother’s X-chromosome. 

Color blindness can also be the result of eye damage, specifically to the optic nerve, or to the area in the brain that processes color. Sometimes an eye disease, such as cataracts, can also impact one’s ability to perceive color. Systemic diseases such as diabetes or multiple sclerosis can also cause acquired CVD. 

Living with CVD

Red-green color blindness does not mean only that you can’t tell the difference between red and green, but rather that any color that has some red or green (such as purple, orange, brown, pink, some shades of gray, etc) in it is affected. 

You many not realize all of the ways you use even subtle distinctions in color in your daily life. Here are some examples of ways that CVD can impact your life and make seemingly everyday tasks challenging:

  • You may not be able to cook meat to the desired temperature based on color. 
  • Most of the colors in a box of crayons will be indistinguishable.
  • You may not be able to distinguish between red and green LED displays on electronic devices that indicate power on and off. 
  • You may not be able to tell between a ripe and unripe fruit or vegetable such as bananas (green vs. yellow) or tomatoes (red vs green). 
  • Chocolate sauce, barbecue sauce and ketchup may all look the same. 
  • Bright green vegetables can look unappealing as they appear greenish, brown or grey. 
  • You may not be able to distinguish color coded pie charts or graphs (which can cause difficulty in school or work). 
  • Selecting an outfit that matches can be difficult. 

Knowing that one is color blind is important for some occupations that require good color discrimination such as the police officers, railway workers, pilots, electricians etc.  These are just a few of the ways that CVD can impact one’s daily life. So is there a cure? Not yet. 

While there is no cure for CVD, there is research being done into gene therapies and in the meantime there are corrective devices available including color vision glasses (such as the Enchroma brand) and color filtering contacts that for some can help to enhance color for some people. If you think you might have CVD, your optometrist can perform some tests to diagnose it or rule it out. If you have CVD, you can speak to your eye doctor about options that might be able to help you experience your world in full color. 

Innovations in Color Blindness

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There have been a lot of videos going viral lately of color blind people “seeing color” for the first time using specialized glasses. The emotional reactions of amazement, shock and joy even lead some to break down into tears. The glasses provide these individuals a way to view the world in vibrant, living color, as everyone else around them is able to.

One in every 12 men and one in every 200 women have some degree of color blindness or color vision deficiency (CVD). The condition is not actual blindness, but an inability or a decreased ability to see color and perceive differences in color. CVD can be a partial or total deficiency, although total color blindness is not as common. There are two main types of color blindness:

  • red-green – which is most often inherited from the mother’s side on the x chromosome, and

  • blue-yellow – which is much more rare and usually occurs from damage to the nerve. CVD can sometimes be acquired through disease, brain injury or certain drugs or chemical reactions

The World of the Color Blind

Contrary to common misconceptions, a person who is color blind does not see only grey.  He still usually sees color to some extent, but often the colors appear dull or washed out and can be easily confused with other colors. People often have trouble identifying or naming certain colors or distinguishing colors, for example, red and green, as well as orange, yellow and brown may appear similar, particular in low light situations. In fact, while people with normal color vision typically see about one million unique shades of color, individuals with color deficiency are only able to perceive 5-10% of that.

People with color deficiency often do not know they are color blind until they are tested. They assume everyone else perceives colors the same way. Often individuals are tested when they are seeking out certain career paths in which it is essential to distinguish colors such as pilots, electricians or police officers among others.  

Innovations in Color Vision

Color blindness can impair certain aspects of daily life and limit certain activities or job options and therefore there are a number of companies out there working on technology to overcome these difficulties. While there is no cure for CVD, there are aids available that can sometimes assist with increased color perception.  


There are a couple of brands of color enhancing glasses available that help some individuals with red-green colorblindness.

Both EnChroma and o2Amp Oxy-Iso Color Correction Glasses work for about 80% of people with red-green colorblindness – which means that not everyone will have the same experience as those that appear in the videos. The lenses enhance color perception by filtering out the light into different spectral components. EnChroma has two versions – indoor, designed for looking at computer screens and outdoor, sunglasses.  

Another solution is a custom designed ColorCorrection System in which contact lenses and glasses are customized for the individual and are available with or without a prescription. These lenses work by changing the wavelength of the colors as they enter the eye to enhance color discrimination and perception.

Apps for CVD

There are a growing number of apps available for smartphones and tablets that serve as color vision aids for those with CVD.  One example is the Colorblind Avenger which is a color identification program will allows the person to use their mobile device as a visual aid. The user takes a photo or selects an existing photo and when he touches an area on the image the app displays the color of the selected area.

Huevue is another app of colorblind tools that help people with CVD identify, match and coordinate colors. There are many other apps available out there to help aid those with CVD and educate others about living with the condition.

There are even video games and software design tools that are now created with colorblind modes to allow use by people with CVD. While none of these tools and aids are able to restore color vision permanently, they do allow those with the condition to live a more vibrant life.

Contact Lenses That Correct Color Blindness Are Here!

Offering Farnsworth D 15, Farnsworth 100, and Lanthony Desaturated D-15 tests

Diamond Vision is proud to offer comprehensive eye exams for color blindness or color vision deficiency.

Located in Rockville Center in Nassau County, Long Island, we are one of the only practices serving Manhattan, Queens, Brooklyn and Long Island, that specialize
in the correction of color blindness using corrective contact lenses.

For many of our patients, they use their contact lens to help them pass the color screening test for
acceptance into federal government and military jobs which require passing the Isihara Color test.

Call Now! 516-252-0811

How Do Contact Lenses For Color Blindness Work?

By using different tints on the right and left contact lens, the brain is able to interpret
the information and see the correct color.

This works for all the main types of color blindness including Anomalous Trichromacy (Protanomaly, Deuteranomaly, and Tritanomaly) as well as Dichromacy
(Protanopia, Deuteranopia, and Tritanopia).

Read Our Reviews

best eye doctor in Nassau county

Call Now! 516-252-0811
Doctor photo

Shane M. Galan OD

Dr. Shane Galan was born and raised in Rockaway Beach and Oceanside NY.  He graduated from SUNY Albany in 1991 and The New England College of Optometry in 1996.  In 1997, Dr. Galan completed his residency at the Northport VA Hospital and has owned Diamond Vision since 2000.  Dr. Galan...
colored pencils

What is Color Blindness?

The complete inability to see color, known as color blindness, is a well-known phenomenon to many people. Although total color blindness is a very rare condition, it is part of a larger family of conditions known as Color Vision Deficiency, which is actually quite common.

Color Vision Deficiency entails the inability of the eye to tell the difference between different shades of color. It is the more severe cases of this disorder, in which the eye is completely unable to discern any color at all, that is commonly referred to as color blindness. At our Long Island, NY practice our eye doctor deals with patients with all forms of color blindness.

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What are the Types of Color Blindness?

Short of total color blindness, two main types of Color Vision Deficiency exist, Red-Green (which is the most common form), and Blue-Yellow.

Additionally, Dr. Galan does the following color vision tests:

  • Ishihara
  • Optec 900 Color Vision Test
  • Farnsworth D-15
  • Farnsworth D-100
  • Lanthony Desatursted
  • 15 Hue Test
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Living With Color Blindness?

Many of our patients at our Long Island, NY practice report how difficult this condition can make life for those who suffer from it. The inability to differentiate from red and green makes it impossible to know when to stop or go when at a traffic light.

People are often described by reference to the color of the clothes they wear, driving and walking directions are often given in terms of colored land marks it is quite common to receive color-based instructions on how to complete important activities. An inability to discern certain colors can, therefore, cause serious errors that lead to frustration at best and personal danger or harm at worst.

What Can Be Done For Color Blindness?

Despite these challenges, however, there is hope. Special corrective lenses can be prescribed by your doctor to help compensate for the missing color filters in your eyes. This is called Color Vision Correction.

Although it will not give you perfect color vision, it will allow you to see more colors and shades of colors, and can make colors more vivid and distinct, making these colors more easily recognizable to you.

Many of our patients ask us if the contact lenses can help them pass the Isishara test for their job screening. In our experience color correcting contact lenses prescribed by our eye doctor at our Long Island, NY practice are effective at passing the color blindness test.

For more information about Color Vision Deficiency and Color Vision Correction, contact us or schedule an appointment today!

Request an Appointment
Call Now! 516-252-0811

Directions to Diamond Vision in Rockville Centre

84 N Park Ave
Rockville Centre, NY 11570
  • 9:00 AM - 6:00 PM
  • 9:00 AM - 5:00 PM
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Please note we are only open the first and third Saturday of each month.

We Accept:

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Serving Patients From

Our eye doctor has helped countless people experience color with corrective lenses. Diamond Vision under the leadership of Dr. Shane Galan, is the leading color vision practice serving Manhattan, Queens, Brooklyn, and Long Island.  Our patients come from all over New York including; Garden City, Jericho, Manhasset, Syosset-Woodbury, Melville, Seaford, Bethpage, Plainview, Great Neck, Woodmere, Oceanside, Longbeach, Flushing, Bayside, Laurelton, Ozone Park, and Jackson. 

Questions & Answers: Color Blind Correction

Is there a cure for being color blind?

Currently there is no cure or treatment to fix being color blind. There are lenses that help differentiate between colors allowing people to pass tests for color vision deficiency such as the Ishihara test used by the FAA.

What test is used by the US military for color blindness?

The US military uses three tests, the Pseudoisochromatic Plate (PIP) Set, the Farnsworth Lantern (FALANT) and the OPTEC 900 for detecting color blindness.

What are some examples of careers that require testing for being color blind?

Many jobs require a color vision test such as: The US military, commercial pilots, police, and firefighters.