Keratomalacia is a rare disorder characterized by abnormal softening of the cornea on the surface of the eyeball, which can lead to vision impairment and, in some cases, complete vision loss. This condition is most often caused by autoimmune diseases, metabolic disorders, or prolonged exposure to adverse physical factors such as ultraviolet radiation. In the initial stages, patients may not experience noticeable symptoms, but as the disease progresses, there is a marked decrease in visual acuity, discomfort, and inflammation in the eye tissue. Treatment of keratomalacia should be comprehensive and include both conservative and surgical methods aimed at restoring the structure of the cornea and improving visual function.
History of the disease and interesting historical facts
Keratomalacia was first described in the medical literature in the early 20th century, when ophthalmologists began to notice the association between various systemic diseases and corneal damage. In 1944, the renowned ophthalmologist Johnson presented the first systematic study of keratomalacia cases, outlining its clinical features and identifying primary risk factors. Since then, attention to the disease has increased, leading to a more thorough understanding of its pathogenesis and improved diagnostic and therapeutic methods. In the 1970s, the influence of environmental factors such as pollution and ultraviolet radiation on the development of this disease was described. In the following decades, new diagnostic and therapeutic technologies have emerged, improving outcomes for patients with keratomalacia.
Epidemiology
According to modern data, keratomalacia occurs in the population with a frequency of 0.4 to 1.2 cases per 100,000 people per year. People over 50 years of age are most susceptible to the disease, although cases of keratomalacia have also been registered in young people. In countries with high levels of solar activity, there is an increased incidence of keratomalacia. According to research, in patients with systemic diseases such as diabetes and congenital metabolic disorders, the risk of developing keratomalacia increases by 2-3 times. Regional differences in incidence are also observed: in tropical and subtropical countries, the incidence of cases is significantly higher compared to temperate latitudes.
Genetic predisposition to this disease
There is evidence of a hereditary predisposition to keratomalacia, which indicates the presence of certain genetic abnormalities associated with the development of this disease. Studies show that the commitment of genes such as COL4A4 and LAMC2 may increase the likelihood of keratomalacia. Mutations in these genes affect the structure of collagen and extracellular matrix, which leads to disturbances in the integrity and function of the cornea. Familial cases of the disease cited in the literature support the theory of an autoimmune nature, where the body's own immune system destroys corneal cells using genetically predisposed mechanisms.
Risk factors for the development of this disease
There are several key physical and chemical risk factors that contribute to the development of keratomalacia:
- Ultraviolet radiation: Prolonged exposure of the eyes to the sun without proper protection can cause damage to the cornea.
- Infectious diseases: Such as viral conjunctivitis and herpes can be triggers for the development of keratomalacia.
- Systemic diseases: Diabetes and thyroid disease may increase the risk of keratomalacia.
- Chemical agents: Contact with toxic substances such as alkalis and acids may cause eye damage.
- Vitamin deficiencies: A deficiency in vitamins A and E may also be a risk factor, as they play an important role in maintaining corneal health.
Diagnosis of this disease
Diagnosis of keratomalacia is based on a combination of clinical evaluation and additional testing. Key symptoms may include:
- Decreased visual acuity.
- Feeling of discomfort in the eyes.
- Irritation and redness of the eye.
- The appearance of drops on the cornea (lesions).
- Sensitivity to light.
Laboratory tests may include:
- General blood test to determine the presence of inflammatory processes.
- Special tests for infections.
Radiological examinations such as optical coherence tomography (OCT) are used to evaluate the cornea in detail and identify possible changes. Differential diagnosis includes exclusion of other diseases such as advanced cornea, bullous keratopathy, and herpes infection.
Treatment
Treatment of keratomalacia should be individualized and include both conservative and surgical approaches. Conservative treatment may include:
- Use of artificial tears to moisturize the cornea.
- Corticosteroids to reduce inflammation.
- Antibiotics for infectious processes.
Pharmacological treatment is aimed at eliminating the factors that cause the disease. Surgical treatment may be necessary in cases of severe corneal damage, where keratoplasty or corneal transplantation may be indicated. Other treatments include:
- Phototherapy for corneal regeneration.
- Laser procedures for vision correction.
List of drugs used to treat this disease
- Artificial tears (eg, Hylo-Care).
- Corticosteroids (eg, Dexamethasone).
- Antibiotics (eg, Ciprofloxacin).
- Laser products (eg Laser Healing Gel).
Disease monitoring
The patient's condition is monitored by an ophthalmologist on a regular basis, especially during the treatment process. Control stages include:
- Regular visual acuity examinations.
- Dynamic monitoring of the cornea using OCT.
- Blood tests to identify possible infectious and inflammatory processes.
The prognosis for patients with keratomalacia depends on the severity of the disease and the timeliness of treatment. A comprehensive approach to therapy can significantly improve the prognosis and reduce the risk of complications such as infection, corneal scarring, and long-term vision loss.
Age-related features of the disease
Keratomalacia may present differently in different age groups. Older people are more likely to have age-related degenerative changes in the cornea, which increases the likelihood of keratomalacia. In childhood, the disease may be less common, but when it is associated with genetic or metabolic disorders, early detection and treatment are important. In young people, keratomalacia often develops due to unfavorable environmental conditions or exposure to ultraviolet radiation. There are studies showing that the disease develops faster and is more severe in young people.
Questions and Answers
- What is keratomalacia? This is a rare condition characterized by softening of the cornea, which can lead to vision loss.
- What are the risk factors associated with keratomalacia? Ultraviolet radiation, infectious diseases and vitamin deficiencies increase the risk of developing keratomalacia.
- How is keratomalacia diagnosed? Diagnosis involves diagnosing the disease based on symptoms, laboratory tests, and radiological studies such as OCT.
- What is the treatment for keratomalacia? Treatment can be conservative (artificial tears, corticosteroids) or surgical (keratoplasty).
- What is the prognosis for patients with keratomalacia? The prognosis depends on the severity of the disease and the timeliness of treatment; an integrated approach can significantly improve outcomes.
Advice from Dr. Oleg Korzhikov
It is important to consult a specialist at the first signs of vision deterioration. Regular examinations, especially for older people and those with chronic diseases, can prevent the development of serious complications. Always use protective glasses when staying in the sun for a long time, and avoid contact with potentially harmful chemicals. Pay attention to a balanced diet, including vitamins A and E, which help maintain eye health. If keratomalacia is detected, strictly follow the specialist's instructions and do not self-medicate.
