Electroretinography

Electroretinography: a method for diagnosing retinal diseases

The retina plays a key role in our vision by converting light signals into nerve impulses that are transmitted to the brain for processing. However, like any other organ, the retina can be subject to various diseases that can lead to disruption of its functions. Diagnosis of such diseases can be difficult, especially in cases where visual examination of the retina is difficult. One of the methods for diagnosing retinal diseases is electroretinography.

Electroretinography (ERG) is a method of recording changes in the electrical potential of the retina when illuminated. It is based on the fact that when the retina is exposed to light, its electrical potential changes, which can be recorded using electrodes. One electrode is placed directly on the surface of the eye using a special contact lens, and the other is usually attached to the skin at the back of the head.

ERG allows you to assess the functional state of the retina, identify its disorders and evaluate the effectiveness of treatment. This method is useful in diagnosing various retinal diseases when visual examination is difficult or when the disease produces virtually no visible changes in the retina. It can be used to diagnose diseases such as retinal dystrophy, glaucoma, diabetic retinopathy, macular degeneration and others.

One of the main advantages of ERG is its high sensitivity and specificity. This method allows you to identify retinal diseases in the early stages, when they do not yet manifest symptoms, which allows you to begin treatment most effectively. In addition, ERG is a safe and non-invasive method that does not require special patient preparation.

However, like any other diagnostic method, ERG has its limitations. For example, it cannot be used to diagnose diseases that are not related to the functioning of the retina. In addition, ERG results may be distorted if there is interference such as electrical signal noise.

In general, electroretinography is an effective method for diagnosing retinal diseases, which makes it possible to identify them in the early stages and evaluate the effectiveness of treatment. ERG is a safe and non-invasive method that can be used to diagnose various retinal diseases. However, like any other diagnostic method, ERG must be used in combination with other methods to obtain the most accurate diagnosis and determine optimal treatment.

Electroretinography is a method of recording the electrical potential that is formed on the surface of the retina under the influence of light. This method is used to diagnose various diseases of the retina and lens of the eye.

Electroretinography allows you to determine the condition of the retina even when visual examination is difficult due to lens opacities. This method can also be used to determine the effectiveness of treatment for retinal diseases.

To carry out electroretinography, a special device is used - an electroretinograph. It consists of two electrodes: one is fixed on the surface of the eye, and the second on the scalp. During the examination, light is applied to the patient's eye, which causes an electrical potential to form on the surface of the retina. This potential is recorded by an electroretinograph and displayed on the screen.

Thus, electroretinography is an important method for diagnosing retinal diseases and allows determining the effectiveness of treatment.

Electroretinography is a method for recording changes in the electrical potential of the retina when illuminated. It is used to diagnose various retinal diseases.

One electrode is placed on the surface of the eye using a special contact lens. The second electrode is attached to the skin of the occipital region. In the presence of a disease, the recorded electrical signal changes.

Electroretinography is especially useful in diagnosing retinal diseases in cases where visual examination is difficult due to clouding of the lens, such as cataracts, or when the disease does not cause visible changes in the surface of the retina.