Are your eyes always dry? Are they itchy? Is it because of a problem with the meibomian glands? (Meibomian Gland Dysfunction)

Do you sometimes feel like your eyes are just dry, like there's something inside, or that they're constantly itching and red? You might think this is normal, like a speck of dust. However, if these symptoms persist, it could be a problem with the tiny oil glands in your eyelids. Today, we're going to talk about one such condition, Meibomian Gland Dysfunction (MGD) .

What is meibomian gland dysfunction (MGD)?

Simply put, Meibomian Gland Dysfunction (MGD) is when the tiny oil glands on the upper and lower edges of your eyelids (we call these Meibomian glands) don't properly secrete the oil (called meibum) that your eyes need. This oil is very important to keep your eyes from drying out.

Imagine, there is a tear film that protects our eyes. It has three main layers:

1. The oily outer layer: This is made up of oil from the meibomian glands. This stops the watery layer underneath from evaporating too quickly.

2. Aqueous middle layer: This is the largest part of the tear film. It is the main part that moisturizes, nourishes, and cleanses the eye.

3. Innermost layer containing mucus: This helps keep the aqueous layer well lubricated on the surface of the eye.

Now you understand how important the oil from the meibomian glands is? In MGD, either these glands do not produce enough oil , or the quality of the oil they produce decreases . Most often, the openings of these glands become blocked and the oil cannot come out. We call this obstructive MGD .

This condition can be congenital or acquired. It can affect both young and old people.

How common is this condition?

In fact, MGD is a much more common condition than you might think. It is estimated that about 35.8% of the world's population has this condition. In the United States, about 70% of people over the age of 60 have MGD.

It is generally more common in men than in women. Its prevalence also varies among different ethnic groups. For example, MGD is more common in people of Asian descent than in whites.

Do you also have these symptoms?

Some people with MGD don't show any symptoms. However, if you do develop symptoms, they may include:

• Eyes are constantly itchy or feel burning .
• Eyes are red or sore .
• The eyelids look swollen .
• My eyes are watering in vain.(This actually happens because the eye is dry, and the eye responds by producing more watery tears).
• A foreign body sensation, like a grain of sand in the eye.
• My vision seems a little blurry .
• Styes and chalazions often occur on the eyelids.
• My eyelashes have clumps or sticky substances stuck to them in the morning.
• If you use contact lenses, it can be difficult to wear them comfortably .

Imagine, Nilanthi is someone who works on the computer all the time. In the evening, her eyes get red and itchy. Sometimes she feels like something is stuck in her eyes. She thought it was due to fatigue. But it was only when she saw a doctor that she learned that she had developed MGD.

Why is this happening? What are the reasons?

The main cause of MGD is the blockage of the meibomian glands that we talked about earlier. This means that oil accumulates in the gland openings, gets stuck, and cannot come out. Another reason is that the quality of the oil secreted by the glands decreases .

Additionally, the use of certain medications can also cause MGD. For example:

• Some medications for glaucoma.
• Medications containing retinoids (used for acne).
• Estrogen given for hormone replacement therapy.
• Medications that reduce androgen levels.

Who is more likely to develop this? (Risk factors)

Risk factors are things that increase the chance of developing a disease. MGD has several such risk factors:

• Aging: As you age, the function of these glands may decrease.
• The effect of hormones: especially a decrease in the hormone androgen.
• Having a tendency to allergies.
• Wearing contact lenses: The risk is higher if you wear them for longer than the recommended period of time without cleaning them properly.

Additionally, if you have certain medical conditions, you are more likely to develop MGD. This risk is especially high in people with diseases related to the immune system.

The risks associated with a weakened immune system

People with these conditions can develop MGD:

• Rosacea ( Rosacea ): A condition in which the skin becomes red and small blood vessels are visible on the surface.
• Sjögren's syndrome: An autoimmune disease that causes dry eyes and mouth.
• Lupus: An autoimmune disease that affects various parts of the body.
• Psoriasis: A skin disease that causes scaly patches.
• Rheumatoid arthritis:An autoimmune disease that affects the joints.

Other medical conditions that increase the risk of MGD

• Chronic blepharitis: The edges of the eyelids are constantly swollen and red.
• Stevens-Johnson syndrome: A condition that severely affects the skin and mucous membranes.
• High blood pressure.
• High cholesterol levels in the blood.
• Eye infections, such as trachoma .
• Aniridia: A condition in which the iris of the eye is completely or partially absent.

What complications can occur if left untreated?

MGD is not just a dry eye. If it is not treated properly, it can lead to various complications. Therefore, it is not a good idea to ignore it.

The main complication is the development of dry eye syndrome (Dry eye disease) . This means that the eyes are constantly dry. In addition, diseases of the surface of the eye (cornea and conjunctiva), such as inflammation of the eyelids (blepharitis), can occur.

If MGD is left untreated, you are more likely to develop eye infections or inflammatory conditions . If you are undergoing any eye surgery, MGD is also at risk of complications after that surgery. In severe cases, untreated MGD can even damage the cornea .

How does a doctor diagnose MGD?

Your eye care provider will first ask you about your health, medications, and symptoms. Then, they will perform a complete eye exam . Based on your answers, the doctor will be able to look inside your eyelids to identify signs of MGD.

What tests are being done for this?

To confirm whether you have MGD, your doctor may perform one or more of the following tests:

• Oil expression: The doctor will gently apply pressure to your eyelids to see if oil is coming out of the glands, if so, how much, and what the nature of the oil is.
• Tear film breakup time test (TBUT): A special dye is put in your eye and you are asked to blink. Then, a slit lamp is used to measure how long it takes for the tear film to break up. It should usually be more than 10 seconds.
• Schirmer test (Schirmer tear test): In this test, two special filter paper strips are placed between your lower eyelid and your eye. After a few minutes, the amount of moisture absorbed by the paper strips is measured to see if your eyes are producing enough tears.
• Tear sample testing (Sampling):Some tests can find out what proteins are in your tears.
• Meibography: This is a test that takes pictures of the meibomian glands. It uses various techniques, such as infrared, optical coherence tomography (OCT), and laser imaging. It can show the shape of the glands, how many of them are blocked, and whether they are damaged.

What are the treatments for this?

Treatment for MGD depends on many factors, including how severe your condition is, what caused it, and your overall health.

Things you can do at home

The doctor first recommends a few simple things you can do at home:

• Warm compresses: Soak a clean cloth in warm water, wring it out well, and hold it over your eyelids for about 5 minutes. This will help loosen some of the trapped oil and allow it to drain more easily. It's best to do this at least twice a day.
• Eyelid massage: After applying the warm compress, gently massage your eyelids with your fingertips, pushing them towards your eyebrows (downward for the upper eyelids, upward for the lower eyelids). This will help release the oil from the glands.
• Eyelid hygiene: Mix a small amount of mild soap, such as baby shampoo, with a little water and gently clean the edges of your eyelids (where your eyelashes start). Or, use a special lid cleaner recommended by your doctor.
• Taking Omega-3 supplements: Taking supplements containing omega-3, such as fish oil or flaxseed oil, can improve the quality of the oil and reduce MGD symptoms. Talk to your doctor about this and start.
• Taking care of the environment: Reduce exposure to strong winds. Reduce the time spent staring at screens like computers and phones. Give your eyes a break from time to time.

Treatment recommended by a doctor

If home treatments alone are not enough, your doctor may suggest other treatments, such as:

• Artificial tears / Lubricants: Lubricant eye drops can be used several times a day to reduce dryness in the eyes. They also come in gel or ointment form.
• Anti-infective medications: If there is an infection in the eyelids, antibiotic drops, ointments, or pills may be prescribed. Some antibiotics (e.g., doxycycline , azithromycin) can also help with MGD.
• Topical anti-inflammatory medications:Eye drops, such as cyclosporine or steroids, can help reduce inflammation in the eyelids. These should only be used under the advice of a doctor.
• Treating associated diseases: For example, if it is a condition caused by mites (Demodex) that live on the eyelids, treating it.
• Procedures to unblock glands:
• Devices like Lipiflow, iLux, and TearCare: These apply controlled heat and pressure to the eyelids, dissolving the clogged meibomian glands and removing them.
• Meibomian gland probing: A thin instrument (probe) is inserted into the gland openings and the blockage is removed.
• Laser treatments: Some types of lasers are also used to stimulate these glands and remove blockages.

How long does it take to recover from treatment? What is the outlook?

Most MGD treatments don't require a lot of "recovery time." In fact, your doctor will tell you to continue with things like eyelash extensions, warm compresses, and supplements.

Only if you undergo a surgical procedure, it can take some time to fully recover.

The outlook for someone with MGD is usually good , especially if you do what you need to do to manage the condition. You may need to maintain good eye hygiene habits throughout your life.

Can MGD be prevented? How can the risk be reduced?

MGD cannot be completely prevented, but in some cases you can reduce your risk .

We can't change some risk factors, like age and race. However, there are some things we can change:

• Managing other health conditions: Control things like blood cholesterol levels and blood pressure.
• Manage your environment: Stay away from allergens as much as possible. Avoid drafts as much as possible. Limit screen time.
• Regular eye exams.
• If you wear contact lenses, use and clean them as your doctor recommends.
• Keep your eyes and eyelashes clean.

What are the best times to see a doctor?

If you have any vision-related problems, such as eye pain or blurred vision, be sure to see a doctor.

If you experience sudden eye pain or vision loss, go to a hospital emergency room immediately.

Important questions to ask your doctor

You may have many questions to ask your eye doctor. You might ask things like:

• What causes me to have this MGD condition?
• What kind of treatment do you recommend?
• Are there any side effects (complications) to these treatments?
• Is this condition genetic? Should I ask the rest of my family to get tested?
• How often should I have eye exams?
• Can I still use contact lenses?
• Will this MGD condition ever get completely better?

Will this MGD condition be completely cured?

For some people, MGD can be a lifelong problem , especially if you have another condition, such as an immune system disorder, that can be controlled but not completely cured. However, if managed properly, it can be a life-long problem.

How to reset clogged meibomian glands?

You can use home remedies like warm compresses and massage to help unclog clogged meibomian glands. In addition, there are tools and techniques that doctors use.

Examples of these are:

• Machines that heat your eyelids and dissolve dry or thickened meibum.
• Machines that use laser beams to enter the glands and remove blockages.
• Thin instruments (probes) are inserted into the glands by the doctor to remove the trapped meibomian oil.

Finally, the most important things to remember

It's important to have regular eye exams. This is because a doctor can detect some eye conditions (like MGD) before you even have symptoms. Dry eyes from time to time may not be a big deal. However, dry eyes are not good for you. Your meibomian glands are an important part of your eye health that helps protect your eyes. Therefore, if you have MGD, it's important to diagnose and treat it early to prevent serious complications. If you have any questions about this, don't hesitate to talk to your eye doctor.

` Dry eyes, Meibomian glands, MGD, Dry eye syndrome, Eye health, Meibomian Gland Dysfunction, Dry Eye Syndrome