THEBOEGIS: Healthy Eyes
Showing posts with label Healthy Eyes. Show all posts
Showing posts with label Healthy Eyes. Show all posts

Thursday, October 24, 2019

Various Unique Facts About Color Blindness

Color blindness or more precisely Color Vision Deficiency (CVD) is a term to describe the lack of perception sensitivity to certain colors. Color blindness is a commonly used term, although it is misleading if interpreted literally because people who have this condition can still see colors, even though they cannot see the difference between several complementary (contrasting) color pairs.

Color vision deficiency has nothing to do with visual acuity, and this condition is most often caused by hereditary conditions. The weakness of distinguishing red and green is the most common form of color blindness, which is around 99%. Blue and yellow vision deficiencies also exist, but that is rare and no general test is available for it.

What is the most disturbing thing for people who are color blind?
The following are some of the unique things that can upset a person who is color blind:

  • When grilling a piece of meat, people with red color deficiency cannot tell whether the meat is raw or cooked. In addition, many also can not distinguish between green tomatoes and red tomatoes or between soy sauce and chocolate syrup. There are also people who buy and bite raw bananas, because they cannot tell if they are yellow or green, and even natural ingredients make it more difficult to distinguish colors.
  • Some foods may look disgusting for individuals who are color blind. For example, a plate full of spinach will be seen as cow dung.
  • However, they can distinguish oranges and lemons, because oranges appear to have a lighter yellow color compared to lemons.
  • A person who is color blind generally cannot interpret chemical testing equipment for pool water, test strips for hard water, soil, or water pH, because they depend on subtle color differences.
  • Many people who are color blind cannot guess whether a woman is wearing lipstick or not. Even more difficult, if they have to distinguish between those with blonde hair with blue eyes and those with red hair and with green eyes.
  • Lack of vision in color can also interfere with children who are affected at a young time. At school, he would have trouble picking up blue crayons to color the sea.
  • They will also be confused to see bi-color and tri-color on the LED (Light Emitting Diodes), are the lights flashing red, yellow, or green? The same problem also occurs with traffic lights.

Various types of color blindness

1. Red-green color blindness
The most common type of this condition is caused by the loss of photopigments cone red (Protan) or green cone (deutran).
Types of red-green color blindness:

  • Protanomaly : The colors red, orange, and yellow turn greenish and the colors are not too bright.
  • Protanopia : The red color will be black. While the colors orange, yellow, and green, all will appear to be yellow.
  • Deuteranomaly : Yellow and green will look more reddish, and it is difficult to distinguish violet and blue.
  • Deuteranopia : The red color will be brownish yellow and green to beige.

2. Blue-yellow color blindness
This condition is less common than red-green. This is usually caused by a loss photopigments cone blue (Tritan). 
Types of blue-yellow color blindness:

  • Tritanomaly : The color blue will become green and it is difficult to distinguish yellow and red from pink.
  • Tritanopia : The blue color will appear green, while the yellow color will appear to be violet or light gray.

3. Total color blindness
People with total color blindness (monochromacy) cannot see colors at all and their visual acuity may have an effect.
Types of Monochromacy:

  • Cone monochromacy : People with monochromacy will have difficulty distinguishing colors, because the brain needs to compare signals from different types of cones  (red, green, and blue) to see colors. When there is only one cone that works, this comparison is not possible. People with blue cone monochromacy may also have poor visual acuity, nearsightedness, and uncontrolled eye movements (nystagmus). Cone monochromacy is an autosomal recessive disorder.
  • Rod monochromacy or achromatopsia : This is a rare type of monochromacy and is the most severe form of color blindness. This is usually present from birth. None of the cone cells have functional photopigments . People with this level of monochromacy see the world in black, white, and gray. People with rod monochromacy tend to be photophobic, very uncomfortable in bright environments. Rod monochromacy is an autosomal recessive disorder.

Other facts
Another rare form of CVD is unilateral dichromacy which affects people by having one normal eye and one color blind eye. For every color blind disease, there is no treatment to treat this condition, but that does not mean people who have color blindness have a significant disability. At one time, the US army found that people with color blindness could see color camouflage where people with normal color vision could be fooled by it. In fact, a decrease in color signal can make textural and brightness differences clearer.

This is the cause of infants suffering from cataracts from birth

During this time you might think that cataracts only occur in people who are old. However, it turns out that newborns can also suffer from cataracts. A baby's black eye lens is covered with grayish stains and this is called a congenital cataract. In some cases it may not have much impact on the baby's vision, but in severe cases it can cause blindness in the baby.

What is congenital cataract?
Congenital cataract is the opacification of the lens of the eye that occurs from birth. These eye lenses function to focus the light entering the eye toward the retina, so that the eye can capture images clearly. However, if a cataract occurs, the light rays that enter the eye become scattered when passing through a cloudy lens, so the images received by the eye become blurred and distorted.

Watching TV Too Much Turns Out Not to Damage Children's Eyes

When you were a child, your parents might be busy advising you - or staring, if you're still stubborn - not to watch TV too closely, because otherwise your eyes will be damaged. This advice sticks tightly in your mind to adulthood and now, as a parent, you are the 'on duty' to warn your children not to sit too close to the television screen.

Monday, October 14, 2019

Here's How To Wear and Take Care of Contact Lenses So That The Eyes Are Not Irritated

Contact lenses are a popular choice to help your vision problems. Or sometimes, contact lenses can also be used only for fashion. However, be careful, if you do not treat your contact lenses properly, then your eyes will be the victims too. Here are tips so that you avoid infection due to contact lens wear

The type of contact lens you use determines how you treat the contact lens. For example, disposable contact lenses require easier maintenance than conventional contact lenses. To avoid complications in your eyes, you must strictly follow the guidelines given by eye experts. If you have difficulty cleaning your contact lenses, tell your eye specialist. Maybe they will help you ease the steps needed, or you might even be advised to change the type of contact lens you wear.

There are 12 Eye Conditions that Overcome Eye Drops

There are 12 Eye Conditions that Overcome Eye Drops
Eye drops are a liquid that is used for various eye conditions, such as red eye and after eye surgery. Eye drops usually contain saline as a basic ingredient. Depending on the intended use, eye drops can also contain artificial tear lubricants, or anti-redness substances, as well as medications. There are eye drops that can be purchased at stalls, there are some that are prescribed by doctors, and there are some that are only used by eye specialists.

When do eye drops be needed?
Eye drops are usually used for the following conditions:

1. Cataract surgery
Lens removal surgery and replacement with artificial lenses require eye drops. Before surgery, eye drops are used to prevent infection, make pupils bigger, and numb in the eye area. After surgery, eye drops can reduce the risk of infection and help cure.

2. Conjunctivitis (infectious eye disease)
Conjunctivitis is an infection or irritation of the conjunctiva (a thin and clear membrane on the inside of the eyelid that covers the whites of the eye). The cause is a bacterial or viral infection, environmental irritation, and allergies. In addition, conjunctivitis can also be caused by toxicity or allergic eye drops, or by eye drops that have been contaminated.

The symptoms that arise are itching, heat, redness, and swelling. Treatment of these conditions can be done by using antibiotic or anti-inflammatory eye drops, or by removing eye irritation.

There Are 3 Things Around Squints You Should Know

Cross strabismus is a condition where the position of the two eyes is not aligned, which causes the person's gaze to not be fixed on one object at the same time. One side of the eye can be upside down, inside, up, or down like it is distracted to look the other way. In many cases, the eyes will be turned in turn. Familiar with this condition?

Crossed eyes are caused by genetic factors
Squinting usually occurs in people who have weak eye muscle control or who have nearsightedness. In many cases, there is no exact cause for this eye condition. Crossed eyes can occur all the time or only at certain times, such as when under stress, after a lot of reading , or due to an underlying disease. Apart from daily activities, a squint of eyes that just arises in adulthood can be a sign of the beginning of a stroke .

Thursday, October 10, 2019

Is it true that the LASIK procedure causes cataracts?

Is it true that the LASIK procedure causes cataracts?
Laser In-Situ Keratomileusis or commonly known as LASIK, is a type of eye surgery that is often used to correct eye disorders such as nearsightedness, farsightedness, astigmatism, and presbyopia. The purpose of LASIK is usually to reduce your dependence on visual aids such as glasses or contact lenses . This operation, which aims to improve visual function, works by reshaping the cornea, the part that is in front of the eye and looks clear, so that light passing through the cornea can focus on the retina located at the back of the eye.

Here Are 7 Causes of Dry Eyes, and How to Overcome It

Here Are 7 Causes of Dry Eyes, and How to Overcome It
In order to work properly, the eyes depend on the flow of tears to provide constant moisture and lubricants to maintain vision and comfort. Tears are a combination of water, as a moisturizing agent; oil, lubricating agent; mucus; to even spread; and special antibodies and proteins, which fight infection. All of these components are released from special glands around the eyes.

Symptoms of dry eyes
Dry eyes occur when the eyes do not produce tears as they should, or when the supporting composition of tears is not of the right consistency and evaporates too quickly. When tears don't lubricate your eyes properly, you can experience:

  • Smarting
  • Sensitivity to light
  • The sensation of rough or gritty in the eyes
  • The sensation of heat, stinging, or itching in the eye
  • Like there are concerns in the eye
  • Reddish
  • Blurred vision
  • Eyes tired and runny
  • Mucus in or around the eyes

If left untreated, this condition will cause inflammation, pain, ulcers, or scars on the cornea. In certain cases, dry eyes cause partial vision loss. However, total vision loss as a result of dry eyes is very rare.

Know the 3 Types of Nutrients that Maintain Your Eye Health

Know the 3 Types of Nutrients that Maintain Your Eye Health
The eye is one of the vital organs that you sometimes forget about its health. How to maintain eye health is not only limited to maintaining safe visibility when you watch TV or read books. What you eat also affects the health of your eyes. What foods can help maintain your sense of sight?

Lutein and zeaxanthin in green vegetables
Antioxidants and phytonutrients found in green vegetables can provide benefits for eye health. Green spinach, kale, collard, dark green leaf lettuce such as romaine lettuce , and broccoli are good sources of lutein and zeaxanthin. Lutein and zeaxanthin function to protect the eyes from high-energy rays that can harm the eyes, for example are ultraviolet rays from the sun. According to some studies, lutein and zeaxanthin help improve the quality of vision, especially in low light conditions.

Not only that, if you eat foods that are rich in lutein and zeaxanthin then you can avoid eye diseases due to old age. Those who eat green vegetables are 50% less likely to develop cataracts later in life.

Saturday, October 5, 2019

There Are 10 Eye Signs It's time to see your eye doctor

When you start to feel something is wrong with your vision, the only way is to see an eye doctor to find out the condition of your eye health. You will most likely be prescribed eyeglasses, but keep in mind that you can't diagnose yourself and buy glasses just by experimenting, without knowing what you really need.

Dr. John Lahr , medical director of EyeMed, said that the symptoms that often appear in the eye are very broad, so the only accurate way to find out what the problem is is to consult an ophthalmologist.

Is It True to See Green Nature Make Eyes Healthier?

Maybe your parents or even your teacher at school once told us that seeing the green scenery out there, for example trees or hills, has good benefits for our eyes.

So far, there seems to be no definitive research about the benefits of green on eye health, and it is still just a suggestion from parents. However, actually seeing certain colors, including green, is not just "refreshing" the eyes, you know. Psychologically, green has an influence on our mood and mind, and makes us feel calmer.

Based on reports, colors are known to have an influence on our psychology and emotions. Color is also a form of nonverbal communication that can express messages instantly and has more meaning.

Signs of Eye Cancer and How to Avoid it

Definition
What is eye cancer?
Cancer that occurs in eye tissue is called eye cancer. Cancer in general can move to other parts of the body, such as the lungs or breasts. When cancer cells do this, it is called metastasis.

Cancer is always named after the place it first appeared. For example, when eye cancer spreads to the liver (or other places), it is still called eye cancer.

There are various types of cancer that often cause eye cancer:
  • Melanoma,
  • Squamous cell carcinoma
  • Lymphoma
Retinoblastoma, a cancer that generally occurs during childhood.
The most common type of eye cancer is primary intraocular melanoma. Primary means that cancer initially appears in the eye, not spread from other places.

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