Retinal dystrophy (retinal degeneration): diagnosis and treatment
Retinal dystrophy often produces no obvious symptoms for a long time, but when spots and flashes appear, changes are already well underway. We explain how to recognize retinal degeneration, what tests are needed, and how we help preserve vision.
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What are the types of retinal dystrophy?
Dystrophic changes vary in location and progression. Symptoms and monitoring strategies depend on the type. Let's look at the main forms.
Peripheral retinal dystrophy
Peripheral retinal dystrophy affects the outer areas, far from the center. It may progress without complaint for a long time, as central vision is preserved. The danger is that thinned areas increase the risk of tears and detachments. Therefore, it is important to detect them promptly.
This form is often discovered by chance, during an examination for another reason. Therefore, people at risk undergo routine retinal peripheral examinations. This reduces the likelihood of sudden detachment.
Macular degenerative changes
In the center of the fundus is the macula, or macular region, responsible for reading and facial recognition. When this region is damaged, age-related macular degeneration develops. It is central vision that is affected. A person notices a spot in front of the eye and distortion of straight lines.
Other forms of dystrophic changes
There are hereditary and mixed forms of retinal degeneration, which manifest at different ages. Some are associated with general diseases and vascular disorders. The exact form is determined by a doctor after examining the fundus and performing additional tests.
Early symptoms that shouldn't be ignored
The symptoms of retinal dystrophy develop gradually and can easily become accustomed to. Some signs indicate a slow progression, while others require immediate examination. Let's look at what to look for.
Floaters, flashes, and a "veil" before the eyes
Many people are bothered by floaters before their eyes. They are especially noticeable against a light background. Flashes of light and a sensation of a veil obscuring part of their vision are even more alarming. The sudden onset of these symptoms is a reason to see a doctor as soon as possible.
Distortion of lines and decreased visual acuity
When the central zone is affected, straight lines appear wavy – this is line distortion, or metamorphopsia. This is accompanied by a decrease in vision, which makes it difficult to read and distinguish fine details. Such complaints indicate changes in the macula.
When symptoms require urgent examination
If you notice any warning signs, don't delay your visit to the doctor. Reasons to make an appointment with an ophthalmologist include:
- Spots before your eyes
- Flashes of light
- Distortion of straight lines
- Decreased visual acuity
- Loss of parts of the visual field
- Feeling like a veil
If symptoms appear suddenly or worsen rapidly, an urgent consultation is necessary. Delaying such complaints increases the risk of irreversible changes.
Causes and risk factors
Retinal dystrophy has several causes, and they often occur together. Knowing the risk factors helps determine who needs more frequent eye exams. Let's look at the main ones.
Heredity and age-related changes
Some forms are inherited and manifest themselves in young adults. As the years go by, age-related changes occur, slowing the metabolism. Therefore, older people and those with family members with the disease require regular checkups.
High myopia and eye strain
With high myopia, the eye is elongated, and the tissue is stretched and thinned. This increases the risk of peripheral retinal degeneration and the likelihood of tears. It is important for these patients to have their peripheral fundus examined, even if their vision is not yet bothering them.
Myopic people should protect their eyes from impacts and sudden strain. Regularly examining the periphery helps identify weak spots early. If you notice the first flashes or spots before your eyes, don't delay your appointment.
Vascular, metabolic and inflammatory disorders
Vascular diseases, diabetes, and metabolic disorders can worsen the nutrition of the fundus. Past eye inflammations also leave a mark and increase the risk of dystrophy. Maintaining overall health reduces eye strain.
Controlling blood pressure and blood sugar also plays a significant role. When these parameters are normal, the blood vessels of the fundus are less affected. Therefore, it is beneficial to combine ophthalmological monitoring with treatment for general illnesses.
General information
How do we diagnose retinal dystrophy?
Diagnosis of retinal dystrophy is aimed at early detection of changes before they affect vision. The doctor combines vision testing, fundus examination, and precision instrumentation. This provides a complete picture of the retina's condition.
Ophthalmologist examination and vision test
The appointment begins with a conversation and a visual acuity test. The ophthalmologist:
- Clarifies the patient's complaints
- How long have they been present?
- Learns about any associated illnesses
This information alone will suggest what to look for during the examination.
Fundus examination
The key step is a fundus examination with the pupil dilated. The doctor examines the fundus, its center and periphery, and notices thinning and tears. This examination reveals changes that the person may not yet notice.
To fully visualize the periphery, the pupil is dilated with drops beforehand. After this, light sensitivity and near blurring persist for several hours. It is best to avoid driving during this period.
OCT and additional examination methods
OCT reveals tissue layers and helps assess the condition of the macula. Visual field testing and vascular angiography are performed as indicated. These methods clarify the type of dystrophy and help monitor its progress.
To make it clearer what each method is for, we'll put them in a table:
| Method | What it shows | Why it's needed |
|---|---|---|
| Vision test | Visual acuity | Basic assessment of complaints |
| Fundus examination | Retinal condition | Detection of changes |
| OCT | Layered structure of the retina | Accurate diagnosis |
| Visual fields | Visual loss Vision | Assessment of functional impairments |
The doctor selects the appropriate set of methods individually. Often, an examination and OCT are sufficient, and additional tests are prescribed as needed.
FAQ
What is retinal dystrophy?
Is it possible to cure retinal dystrophy?
What tests are needed if retinal dystrophy is suspected?
When should you urgently see an ophthalmologist?
Certain symptoms should not be postponed until a scheduled appointment. They indicate a tear or detachment, and the situation can be time-consuming. Let's discuss what to do.
Flashes, sudden deterioration of vision, "curtain"
See an ophthalmologist immediately if you experience flashes of light, sudden deterioration of vision, or a sensation of a curtain on the side or above. These signs indicate a detachment that threatens vision. The sooner you receive help, the better your chances of preserving your vision.
What to do before your ophthalmologist appointment
Before your examination, avoid straining your eyes and avoid driving if your vision is impaired. Avoid using eye drops on the advice of friends or waiting for symptoms to resolve on their own. It's best to contact the clinic immediately and describe your concerns.
Clinical Guidelines of the Ministry of Health of the Russian Federation — https://cr.minzdrav.gov.ru/
Russian Society of Ophthalmologists — https://roftalm.ru/
Ophthalmology Journal — https://www.mediasphera.ru/journal/oftalmologiya
Ophthalmology Bulletin — https://www.mediasphera.ru/journal/vestnik-oftalmologii
Russian Medical Journal — https://www.rmj.ru/
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What is retinal dystrophy?
Retinal dystrophy is a group of changes that impair the nutrition and function of the retina. The tissue gradually thins, and certain areas lose sensitivity to light. Such disorders are often referred to as retinal degeneration.
What happens to the retina during dystrophy?
The retina lines the back of the eye and converts light into nerve signals. During dystrophy, metabolism in its layers is disrupted, and light-sensitive cells are damaged. In some cases, the peripheral area thins, while in others, the central area, which is responsible for clear vision, thins.
Why does this affect vision?
When retinal cells are damaged, the brain receives an incomplete image. If the central area is affected, clarity is lost and details become distorted. If the periphery is affected, peripheral vision is narrowed, and a person may not immediately notice this.
The rate of decline depends on the form and stage of the disease. Sometimes vision remains stable for a long time, so observation is sufficient. In other cases, changes progress, so regular checkups help with timely intervention.