Chicken blindness is a popular designation of the pathology of vision, which in medicine is called as hemeralopia or niktalopia. The disease manifests itself in a significant deterioration in visual perception with low ambient illumination. At the same time, the person is disturbed by coordination, the fields of vision are narrowed, and the perception of things in blue and yellow shades is noted.


Chicken blindness has specific causes of manifestation. Doctors stressed that the disease can have a congenital etiology, the causes of which are not precisely defined. The main provoking factor is associated with a lack of vitamin A in the body.

Nictalopia, another medical term for night blindness, also acts as a symptom of various pathologies that are based on damage to the eye retina:

  • high grade myopia
  • glaucoma;
  • pigmentary degeneration of the retina;
  • chorioretinitis
  • optic nerve atrophy
  • siderosis

With a deficiency of vitamins A, PP, B2 in a person, too, visual perception deteriorates. This condition can be provoked by certain ailments and indicators:

  1.  an unbalanced diet
  2.  starvation
  3.  Anemia
  4.  rubella or chicken pox
  5.  liver disease;
  6.  gastrointestinal lesion
  7.  alcoholism
  8.  intoxication;
  9.  depletion of the body
  10.  certain drugs
  11.  long stay in bright light


Based on the etiology of the disease, clinicians determined that night blindness, as a disease, can manifest itself in three forms:

  • Congenital — develops by hereditary factor in childhood
  • Essential — night blindness is formed from the lack of vitamins and trace elements, if the structure of the retina is disturbed;
  • Symptomatic — progresses from concomitant ailments that affect the retina or optic nerve

Also in medicine, another type of disease is identified, which is called false hemorrhagia. It manifests itself in an insignificant violation of visual function in the dark. The ailment is provoked by severe overwork of the eyes. This type of illness does not require medical assistance, which is why the patient has enough rest.


As a rule, night blindness occurs in people from a deficiency of vitamins. Therefore, coping with such a disease will not be difficult for the patient. In order to recognize the disease in time, a person needs to monitor all changes in vision, especially during dusk.

Doctors identified the main symptoms in a person who has a patient for night blindness:

  1.  gradual deterioration in visual perception
  2.  the retina reacts poorly to the light source
  3.  the color perception deteriorates;
  4.  Dark spots appear
  5.  Dryness of the cornea of ​​the eye;
  6.  foreign body sensation
  7.  loss of orientation in space.

If the night blindness is manifested in an adult, then the disease can testify plaques Iskersky-Bito. They appear as spots on the conjunctiva of the eyes and are painted in a characteristic gray color, and also are flush with the surface of the shell.

In case niktalopia has developed due to a lack of vitamins, the patient has slightly different symptoms. The person manifests some of the above changes, as well as dehydration of the skin, bleeding gums begin to bleed, there are heavily condensed areas on the body. Chicken blindness manifests itself in characteristic signs, to which there are added such symptoms as skin itching and keratomalacia. In a place where the cornea has softened slightly, the patient may experience erosion or ulceration.

In childhood, anxiety manifests with the onset of the dark time of the day.


A disease such as night blindness can only be established by a doctor. If a person has some symptoms from the above, then you should definitely contact an ophthalmologist. With the help of electroretinography and anamnesis analysis, the physician can establish the correct diagnosis and determine the causes of the anomaly of the eye.

Also in the diagnostic measures the patient can send for the conduct of such surveys:

  • perimetry — revealing the fields of the eye
  • adaptometry — a test for the perception of a light source
  • electrooculography — examination of the eye muscles and the retina surface with eye movement


If a person is diagnosed with congenital hemorrhagia, then its treatment is impossible. Other forms of ailment can be cured by medicinal and folk methods. In very rare and severe cases, doctors resort to surgical therapies.

The emerging problems with the eyes of the essential type can be eliminated by diet. The patient simply is prescribed the use of more vitamin A, and also the observance of the correct and healthy regime of the day. Dietotherapy that can be prescribed to a patient is based on the use of such ingredients:

  1.  carrot
  2.  yolk from a chicken egg
  3.  Tomatoes
  4.  Cheese dairy product
  5.  millet;
  6.  Berries
  7.  Butter;
  8.  spinach;
  9.  Beef liver

Also, the patient should not forget about fresh vegetables and fruits. Doctors recommend eating more peaches, pumpkin, green peas, parsley and apricots. In addition to vitamin A, the body needs to be enriched with vitamin E. To do this, add nuts, seeds, potatoes and broccoli to the diet.

The medicamentous treatment of night blindness is the use of vitamins and special drops to improve vision. Often, the drops contain vitamin complexes that have a positive effect on the retina.

Traditional medicine provides for the elimination of hemalopia in such ways:

  • drink fish oil three times a day;
  • Take the broth of the dogrose.

Treat the ailment surgically possible only if the hemorrhagia manifested in a person in symptomatic form. Often, surgery is prescribed for patients with glaucoma. Thanks to the operative help to the patient the former sight at any intensity of illumination comes back.