Is your vision a little weak? Let's learn about Low Vision.

Do you sometimes feel like your eyesight is a little weak? Maybe even with glasses or contact lenses, you can't see things clearly? Do you have difficulty doing your daily tasks, reading a book, or watching TV? So, today we are going to talk about a topic that may be important to you. That is the condition called ``Low Vision''.

What exactly is low vision?

Simply put, this is a condition called ``Low Vision`` that occurs when you have a permanent vision impairment . This means that it cannot be completely corrected by wearing glasses, using ``contact lenses``, or even having eye surgery. Most eye doctors describe this ``Low Vision`` condition as a moderate to severe level of vision impairment. Depending on the extent of the impairment, it can interfere with your daily activities, such as driving or reading.

You've probably heard terms like "partially sighted" or "legally blind." These are actually specific definitions that fall under the broad heading of "low vision." But they also determine whether you qualify for special education or disability services.

The important thing is, `(Low Vision)` does not mean complete loss of vision . There is some level of vision remaining. `(Vision rehabilitation services)` are there to help you make the most of that remaining vision. A specialist can help you find `(low vision aids)` that are suitable for you and help you make your life easier.

How is low vision measured in a visual acuity test?

One of the main methods we usually use when testing our eyes is the ``Snellen eye chart.`` This measures how clearly you can see something 20 feet away. A person with normal vision is said to have 20/20. That means that you can see clearly at 20 feet away.

Imagine your vision is 20/70. This means that you can see something from 20 feet away that a normal person can see from 70 feet away. The World Health Organization (WHO) calls this level moderate low vision. A vision of 20/200 or higher is considered severe low vision.

But eye specialists don't just look at this number. There are other tests that measure your field of vision, such as a visual field test, to see how far you can see to either side. If your field of vision is 20 degrees or less, that is also considered low vision.

Important: Some people have low vision, but it can be corrected with glasses, contact lenses, or surgery. If your vision improves after treatment, you do not have low vision. Low vision is a condition that persists even when you wear glasses.

What are the symptoms of low vision?

Low vision can affect everyone differently. You may experience things like:

• Central vision loss: The inability to see things directly in front of you clearly. It's like the center of a photo is blurry.
• Peripheral vision loss: Loss of vision around the eyes, like looking through a tube.
• Depth perception loss: The inability to accurately judge the distance between objects. This can be difficult when going up or down stairs.
• Contrast sensitivity loss: Difficulty distinguishing between objects in a background of similar colors. For example, it may be difficult to distinguish a white potato from a plate of white rice.
• Night vision loss: Loss of vision in low-light conditions at night.
• Glare resistance loss: When bright light hits the eyes, the eyes become blue and you can't see anything.

Things like these can cause you to experience difficulties in your daily life:

• Difficulty reading books, newspapers, and things on your phone.
• Not being able to drive .
• Having difficulty working and cooking in the kitchen.
• Having difficulty learning at school and in class.
• Not being able to see clearly when watching TV or videos.
• Difficulty using a computer .
• Difficulty recognizing people's faces .
• It's hard to find your way, especially when going to new, unfamiliar places .

Symptoms of low vision in young children

If your little one has low vision, they may show symptoms like:

• Always bumping into things .
• They look at things very close to their faces .
• Constantly squinting or blinking .
• I always look with one eye closed or with my hand .
• It looks like my eyes are fluttering, unable to keep them in one place .
• The eyes do not point in the same direction .
• The size of the two parts of the eye , the iris and the pupil, varies .
• The iris and pupil appear gray or white .

If you see symptoms like these, you should definitely see a doctor.

Side effects of permanent vision impairment

Living with permanent vision loss can also cause side effects such as:

• Decreased physical and social activity.
• Loss of independence or job .
• A condition called ``Charles Bonnet syndrome'' where you see things that are not there.
• Mental problems like anxiety or depression .

What causes this low vision?

Low vision can be caused by a variety of factors, including illness, accidents, and congenital defects.

Some of the main reasons that are often seen are:

• Macular degeneration: This is a condition where you gradually lose your central vision. You may notice a blur or dark spot in the center of your vision. It most often occurs in people over the age of 50.
• Cataracts: This is also an eye disease that is common with age. This is a clouding of the lens of the eye. This can often be removed with surgery (Cataract surgery). However, not everyone can undergo surgery.
• Glaucoma: This is a progressive disease that damages your optic nerve. It initially affects peripheral vision and night vision. If not treated properly, irreversible damage can occur.
• Diabetes-related retinopathy: This is a complication of diabetes in which fluid leaks from the blood vessels in the eye, putting pressure on the retina, which can eventually damage it.
• Retinopathy of prematurity: Babies born prematurely and treated in incubators can develop abnormal blood vessels in their retinas. In a small number of cases, this can cause permanent damage.
• Amblyopia / lazy eye: This is a birth defect. One eye has blurred vision. As the child's brain becomes more accustomed to the good eye and ignores the weak eye, that eye gradually begins to drift to the side.

Other reasons include:

• Refractive errors: These affect the shape of the eye, causing nearsightedness or farsightedness. Although these can be corrected, they can worsen if left untreated.
• Trachoma: This is a bacterial infection. The eyes can become red and damaged. It is a leading cause of vision loss in the world, especially in developing countries.
• Strabismus (misaligned eyes): A problem with the muscles that move the eyes. It usually begins in infancy or early childhood.
• Nystagmus: This is a condition in which the eyes move rapidly and uncontrollably, making it difficult to focus on one spot. It can be present at birth or develop later in life.
• Retinitis pigmentosa: This is a group of inherited eye diseases. The retina stops working properly. It can be caused by various genetic mutations.
• Hypertensive retinopathy: Long-term high blood pressure can impair blood flow to organs, including the retina. Vision loss may be the first sign of a blood flow problem.
• Retinal detachment: A painless but serious condition. The retina separates from its supporting tissues. It can cause sudden, permanent vision loss.
• Optic atrophy: The optic nerve gradually weakens. This can be caused by a variety of factors, including accidents, infections, and blood flow problems.
• Eye injuries: A serious eye injury can cause permanent damage, especially if it is not recognized and treated properly. Be careful if you develop vision problems after an accident.
• Brain injuries: A severe head injury or stroke can damage the brain and affect vision. Symptoms such as headaches and dizziness may also occur, along with vision problems.
• Vitamin A deficiency: Vitamin A is essential for vision. If you don't get enough of it from your diet, or if your body can't absorb it, your vision may become impaired. Night blindness is the first symptom.
• Eye cancer: All types of eye cancer are very rare, but they can cause vision loss. Treatments to remove cancer can also damage or remove parts of the eye, causing vision loss.

How to recognize low vision?

An ophthalmologist can diagnose your vision impairment by performing various vision tests. He or she will tell you what the problem is, how severe it is, and whether it can be treated. If it is moderate to severe, irreversible, and significantly affecting your life, then it is diagnosed as ``Low Vision''.

Receiving a diagnosis like this can be overwhelming, especially if you were not aware of the irreversible damage to your vision. You may experience a range of reactions, including shock, confusion, helplessness, denial, anger, and sadness. This is all natural.

How do ophthalmologists treat low vision?

When you see an optometrist specializing in low vision, he or she will give you a special test called a 'low vision exam.' First, he or she will take a complete history of your eye health, then ask you how your current condition is affecting your life.

He asks you how low vision affects these things for you:

• School or work activities.
• Reading and computer use.
• Driving.
• Kitchen chores.
• Facial recognition.
• Ability to travel.
• Hobbies and leisure activities.
• Mental state and social life.

The doctor will also examine your eyes and vision to check for any changes in your condition. They will use special ``low vision test charts`` to measure your visual acuity.

You might also want to check this:

• Field of vision.
• Eye muscle function.
• Glare sensitivity.
• The ability to distinguish color (Contrast sensitivity).
• Night vision.
• Color vision.
• Depth perception.
• Reading ability.

Based on your test results, the low vision specialist will create a personalized treatment plan based on your specific challenges and needs. They will provide you with resources and recommendations to help you adapt and maximize your quality of life.

Vision Rehabilitation

Treatment for low vision is called 'vision rehabilitation'. The goal of this treatment is to restore your vision to its best possible level and help you live as independently as possible with the vision you have. This can include a variety of resources.

Your plan may include:

Low vision aids and devices

You may find these useful:

• A prescription for glasses or contact lenses.
• Optical magnifiers or telescopes.
• Electronic magnifiers and screen readers.
• Products with large fonts and high color contrast.
• Voice-to-text and audio reading technology.
• Audible home devices.

Practical training and support

You may also find this useful:

• Occupational therapy is learning to do everyday tasks in new ways.
• A mobility specialist who helps you learn to get around.
• A rehabilitation instructor who teaches independent living skills.
• Special education or vocational services.
• Counseling or psychotherapy to maintain mental health.
• Support groups where you can connect with others living with low vision.

How do I live with low vision?

Not everyone with low vision will seek rehabilitation services, but many can benefit greatly from them. There are a wealth of resources available to them, from practical tools, advice, and strategies to social and psychological support systems.

Adapting to a disability is not easy, but it is easier to do it with the help of others than it is to try to do it alone. Remember, whatever your challenges, someone else has faced them before you. Others have found solutions and ways to cope, and you can share those things with them.

Can I prevent permanent vision damage?

The best way to prevent permanent vision damage is to have regular eye exams and see a doctor immediately if you notice anything unusual. While not all causes of low vision can be prevented, many can be treated if detected early .

What does 'partially sighted' mean?

Most people use the term "partially sighted" loosely, to mean someone with some degree of vision impairment. But sometimes it can mean something more specific. In such cases, it can mean something like "moderate low vision" (visual acuity of 20/70 or worse).

In some countries, you can register with the government as "partially sighted" to receive certain benefits. If you have low vision, you qualify as "partially sighted." Within the education system, being "partially sighted" can mean that you qualify for special education services.

Although it can start at birth, many people's vision gradually deteriorates – sometimes so slowly that they don't even realize it. Whether you're a parent, a student, a working person, or a retiree, coming to terms with the certainty of vision loss can be difficult.

No one is prepared for life with low vision, but many people before you have successfully adapted to it and have made the path forward clear. Remember, you are not alone – your professional care team and your community are there to help you with their experiences.

Take-Home Message

Okay, so now you have a good idea of ​​what we've been talking about, ``(Low Vision)`` or low vision. Here are some important things to remember:

• Low Vision is a permanent vision impairment that cannot be completely cured, even with glasses or surgery.
• This is not total blindness. Some vision remains.
• Symptoms can vary from person to person. They can include decreased frontal vision, decreased peripheral vision, and difficulty reading.
• There can be many causes. These include diseases like diabetes, cataracts, glaucoma, accidents, and birth defects.
• Early detection and proper management are important. Seeing an ophthalmologist and receiving ``Vision rehabilitation`` services can make life easier.
• You are not alone. There are doctors, counselors, and support groups that can help.

If you think you have a vision problem like this, please don't be afraid or embarrassed to see an eye doctor. Acting early can make a big difference in your life.

` Vision, Low Vision, Eye Diseases, Visual Impairments, Low Vision, Eye Examination, Vision Rehabilitation