alijen
Can color blindness be cured?
Cataracts and things you need to know
What is a cataract?
Cataracts (cataracts, dry cataracts) are a common disease in older people. The lens is a transparent, biconvex lens. The lens is an important component that helps light pass through, helping light rays focus properly on the retina.
The focusing power of the vitreous body plays an important role in the refractive system, helping the image focus to focus properly on the retina when looking at a distance. The ability to change the thickness of the lens, called accommodation, helps the eye see nearby objects clearly.
When this transparency is lost, the vitreous body will become opaque and light will have difficulty passing through. Patients experience visual impairment, blurred vision, color blind test and even blindness.
What are the signs of cataracts?
Vision loss is the most important symptom. Usually, blurred vision on both sides is quite symmetrical. Cataracts affect central vision, starting with blurred vision when looking at a distance. Near vision is also affected, except for a special type of opacification, subcapsular opacities behind the lens.
The degree of vision loss depends on the progression of the disease. In the early stages, about 1/10 of vision will... More
by alijen on 2024-04-15 06:54:29
How to know if you are color blind?
Genetic factors are also a cause of color blindness. Therefore, if your family has a history of this disease, you should soon take a color blindness test to check your condition.
Color blindness is not really as serious as many people think. People with color blindness can distinguish some colors but cannot distinguish other pigments. Therefore, “poor color vision” is probably a more accurate name instead of color blindness. This disease is more common in men, with a rate of 1/12 people suffering from the disease in men, while in women it is 1/200.
Experts divide color blindness into two main groups, including:
Inability to distinguish between red and green pigments
Yellow and blue cannot be detected
Mechanism of eye color recognition
The retina is a light-sensitive layer of cells located behind the eyeball. There are two types of retinal cells:
Rod cells: respond to dim light
Cone cells: respond to bright light
Both types of cells respond to color. Their signals travel through the optic nerve to the brain and combine to create all the colors in the rainbow. About 12% of women have an extra type of cone cell that allows them to see 100 times more colors than other... More
by alijen on 2024-01-03 04:28:42
What types of color blindness are there?
Red-green color blindness
It occurs when red or green cone cells do not function properly, or are completely absent. Have some kind:
Mild green blindness: This is the most common form of color blindness and affects 5% of men, but is rare in women. It occurs when green cone cells do not function as they should. Yellow and green look redder, and it can be difficult to distinguish blue from purple.
Mild red color blindness: It happens when your red cone cells don't work like they should. Orange, red, and yellow look greener, and the colors are less bright. It is usually mild and does not cause problems in daily life. This form of color blindness is very rare in women and affects about 1% of men.
Red color blindness: You don't have working red cone cells. Simple red looks dark gray. Some shades of orange, yellow and green look yellow. It is very rare in women and affects about 1% of men.
Green blindness: occurs when you don't have working green cone cells. Red can be yellow-brown and green can be beige (pale yellow-gray). It affects 1% of men and is rare in women
Blue-yellow color blindness
This type of color blind test ness affects men and women equally. This condition occurs in less... More
by alijen on 2023-11-17 03:23:54
Learn about corneas and common diseases
What is the cornea?
The cornea (GM) or in English called the Cornea is a component of the sheath of the eyeball. In which the outermost layer occupies the anterior 1/5 of the outer layer of the eyeball is the cornea (corresponding to the position of the iris of the eye).
The normal cornea is transparent and has an anterior curvature like a watch glass. The GM front is convex and the back is concave, the front is smaller than the back.
GM diameter varies from birth to adulthood. Infants have a GM diameter of 10 mm and adults 11.5 mm. Therefore, GM will have the right size for each age group.
The characteristics of the cornea
The cornea is composed of 5 layers from the outside to the inside, including:
Epithelial layer;
Bowman's membrane;
Parenchymal layer;
Descemet membrane;
Endothelial layer.
What is the function of the cornea?
The cornea will have two main functions, namely:
GM will help cover and protect the eyes from germs, dust and harmful substances.
The GM acts as a lens to help control and focus the light of the eye. The GM contributes between 65 and 75% of the total focusing power of the eye.
The symptoms of keratitis are usually:
Eye pain and redness;
Increased sensitivity... More
by alijen on 2023-07-24 02:17:09
What is color blindness? Treatment of color blindness and prevention of color blindness
Color blindness, also known as chromosomal disorder, is the inability of the eye to distinguish between colors such as red, green, blue, or when mixed between these colors.
People with color blindness can still see objects clearly, but their ability to perceive colors is reduced, rarely in cases of not being able to see any colors. The disease does not affect the survival or reproduction of the infected person, but the disease gene can be passed on to the next generation. It is estimated that the genetic prevalence that affects men is higher than that of women, with an estimated 8% of men and less than 1% of women having color vision problems.
Color analysis is mainly performed by cones, which are concentrated in the central fossa of the retina. When these cones lose the ability to distinguish colors, it causes color blindness or color blindness.
Color blindness treatment
Genetic color blind test cannot be cured, a patient with color blindness caused by medication or complications from another disease can be treated.
Besides treatment, today scientists have invented color filters to aid color discrimination for people with color blindness. Although this type of... More
by alijen on 2023-07-14 04:19:40
Prevention of color blindness
Hereditary color blindness is an incurable disease, so it is necessary to practice habits to live with this disease. Keep in mind the order of traffic light colors for safe traffic. Note the colors, rearrange the order of colors for easy identification when needed.
If there is any abnormality in vision, it is necessary to see a doctor for timely examination, diagnosis and treatment.
It is necessary to support patients with color vision disorders to avoid unfortunate consequences that may occur in daily life.
Occupations that require accurate color discrimination should be avoided such as: designer, driver, painter, teacher.
You can check your color blindness in general with the color blind test before going to the hospital.
Currently, there is no cure for hereditary color blindness, but prenatal diagnosis can confirm the disease.
Prevent:
Treatment of medical diseases that can lead to color blindness such as diabetes, heart disease, glaucoma, etc.
Check your health, chromosome set before getting married to see if anyone has it, to avoid future children getting the disease.
When in contact with chemicals, eye protection must be worn.
Avoid eye and head injuries, easy to damage vision.
Do... More
by alijen on 2023-06-01 07:25:08
Can color blindness be cured?
With color blindness, the patient can still see things but cannot distinguish the colors of those objects. This condition causes many inconveniences in the patient's daily life and work. So is this disease curable, and how can it be prevented?
There are many causes of color blindness, and here are the most common:
Genetic disorders
Due to the side effects of the drug.
Due to the complications of some chronic diseases.
Due to aging.
If you find the color discrimination of yourself or a loved one has problems, use the color blind test application, a very accurate, easy-to-use online color blindness testing tool. Please test before going to the hospital for an in-depth examination.
Can color blindness be cured?
Currently, there is no method that can completely cure color blindness, especially in cases of genetic color blindness. However, with some effective remedies, the patient will be able to better adapt when forced to live with the disease.
Here are some methods to help overcome color blindness:
Children who are colorblind will have difficulty reading colorful books or seeing words written in white chalk on a green board. Therefore, parents need to notify the teacher so that the child can... More
by alijen on 2023-05-16 04:00:26