Often associated with lack of sleep, fatigue or stress, dark circles under the eyes may also be linked to allergies, anemia and certain other health conditions. Particular attention is recommended when they appear suddenly, become persistent or occur alongside other symptoms.

The skin around the eyes is considerably thinner and more delicate than on other areas of the face. As a result, blood vessels, changes in pigmentation and differences in circulation can make dark circles under the eyes appear more pronounced. Although lack of sleep, stress and lifestyle habits are among the most common causes, in some cases dark circles may be linked to underlying health conditions. Dark circles alone are generally not a sign of serious illness. However, if they appear suddenly, persist for a long time, become increasingly noticeable or occur alongside other symptoms, specialist evaluation is recommended to determine the underlying cause.

Allergies Can Affect The Eye Area
Nasal congestion caused by allergies and changes in circulation around the eyes can make bluish-purple dark circles under the eyes more noticeable. This may occur particularly with environmental or food-related allergies, while genetic predisposition can also play a role. When dark circles are accompanied by watery, red and itchy eyes, sneezing, nasal congestion, or itching in the throat or palate, an allergic cause may be suspected. Although allergy-related dark circles generally do not indicate a serious health problem, seeking specialist advice may be beneficial if they persist.

Anemia May Also Be a Cause
Anemia can make the skin appear paler and dark circles under the eyes more noticeable because insufficient oxygen reaches the tissues. Particularly in anemia associated with iron or vitamin B12 deficiency, dark circles may be accompanied by other symptoms such as fatigue, dizziness, paleness and shortness of breath. In this case, rather than starting vitamin or mineral supplements without medical advice, it is important to have the deficiency and its cause evaluated by a physician.

Dark Circles May Also Occur With Thyroid Problems
An underactive or overactive thyroid can affect the body’s metabolic balance, causing various changes in the skin and around the eyes. A dark appearance under the eyes alone is not an indicator of thyroid disease; however, it may require evaluation when accompanied by other symptoms.

Kidney Health and The Eye Area
Impaired kidney function can affect the body’s fluid and electrolyte balance. The resulting fluid retention and edema may cause puffiness and a darker appearance around the delicate eye area. If changes around the eyes are accompanied by other symptoms such as pronounced edema, persistent fatigue or changes in urinary habits, consulting a healthcare professional is important.

September 2026

Changes in the microorganisms living on the ocular surface under space conditions are opening a new field of scientific research. The international SpaceOmix project, which examines changes in the eye microbiome in space, stands out as an important study that could shed light on future research.

The collection of bacteria, fungi, viruses and other microorganisms living in the human body is defined as the “microbiome.” Although more commonly associated with gut health, the microbiome is also found on the ocular surface, as revealed by next-generation bioinformatics analyses. The detection of microbial Dna in the eye, long considered sterile, is adding a new dimension to research into the relationship between eye health and the microbiome. An imbalance in the eye microbiome is thought to be potentially associated with certain eye diseases. Possible links between microbiome imbalance and conditions such as dry eye, allergic conjunctivitis, uveitis and iridocyclitis are making this an important field of research.

In 2025, the eye microbiome was studied in space for the first time as part of the Fram2 mission launched aboard SpaceX’s Falcon 9 rocket. During the five-day mission in polar orbit, samples taken from the same individuals were stored both on Earth and in space for comparative analysis. Involving scientists from Saudi Arabia, Belgium, Malta and Florida, the project is exploring how the behavior of microorganisms in space could contribute to our understanding of human physiology. According to Dr. Uğur Tunç, addressing health problems that may emerge as humans spend longer periods in space over the next 50 to 60 years will become increasingly important. Eye microbiome research is among the fields that could help shape the future of space medicine.

September 2026

The convergence of AI and wearable technology with eyewear is opening the door to a new transformation in the optical industry. Now compatible with prescription lenses, smart eyewear is also creating new areas of expertise and service for opticians.

The integration of artificial intelligence into eyewear is driving the rapid growth of a new product category in the optical industry. Initially seen primarily as tech products, smart eyewear is now evolving into a new generation optical solution that combines design, vision correction and digital technology in a single product. For the optical industry, the key development is the growing integration of this technology into prescription eyewear. The availability of single vision, progressive and light adaptive lenses in new generation products is paving the way for smart eyewear to reach a much broader consumer base.

New Area of Expertise for Opticians
Market data shows that demand for smart eyewear is rising strongly across Europe’s major markets. This growth suggests that the product could move beyond a passing technology trend to become one of the optical industry’s new areas of development. This transformation also creates new opportunities for optical stores. Selecting the right lenses, adapting them to prescriptions, frame fitting, personalization and after sales services could strengthen the role of opticians within the smart eyewear ecosystem. In the coming years, eyewear could evolve into a far more comprehensive platform where vision correction, design and digital technology come together in a single product.

September 2026

Letters blending together while reading, straight lines appearing distorted or difficulty recognizing familiar faces are often mistaken for a natural part of aging.

Age-related macular degeneration is a progressive eye disease that affects the macula, the central part of the retina responsible for sharp vision. Because the disease often progresses without noticeable symptoms in its early stages, it is usually detected only during a comprehensive eye examination. As it advances, symptoms such as difficulty reading, letters appearing blurred together, straight lines looking wavy or distorted, objects appearing different than they are and trouble recognizing faces may develop. If left untreated, the disease can lead to permanent loss of central vision. While advancing age and genetic predisposition are the leading risk factors, smoking remains the most important preventable risk. Avoiding smoking, maintaining a balanced diet and having regular eye examinations all play an important role in reducing both the risk of developing the disease and the rate at which it progresses. Age-related macular degeneration occurs in two forms: dry and wet. In the more slowly progressing dry form, regular monitoring, healthy lifestyle habits and appropriate vitamin supplementation are important. In the wet form, however, modern intravitreal therapies can preserve vision to a great extent. Newly developed treatment options have also made the treatment process more comfortable for patients in recent years. Experts recommend that everyone aged 55 and older undergo regular eye examinations, even if they have no symptoms. A balanced diet rich in green leafy vegetables, omega-3-rich fish and antioxidant-containing foods also supports eye health. Even the slightest changes in vision should not be dismissed as a normal part of aging. Early diagnosis and timely treatment remain the most important factors in preserving vision in age-related macular degeneration.

August 2026