Eye diseases

Eye diseases

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Conjunctivitis is inflammation of the conjunctiva, a thin transparent membrane that lines the front of the eyeball (the whites of the eyes) and the inside of the eyelids.

It usually attacks both eyes, can last from one week to 15 days and usually does not leave sequelae. The combination of various symptoms may be present in conjunctivitis such as: itch, red eyes and excess watering, blurry vision and sensitive to clarity, swelling of the eyelids, and may also occur headache, general malaise and inflammation in the ganglia.

The main causes of conjunctivitis are:

  • Contamination of the eye with bacteria or viruses. Both types of infection are contagious. Viruses are the ones that most often cause epidemics.
  • Chemical irritation It is another cause of conjunctivitis. The causes can be air pollution, soaps, spray, make-up, chlorine, cleaning products, etc.
  • Some individuals have conjunctivitis allergic (seasonal) due to pollen allergy.

Conjunctivitis can be transmitted through direct contact with an infected person's eye secretions transmitted mainly from the hands, towels, cosmetics or indirectly through contaminated instruments, surfaces or solutions. Contamination within the family is very common, that is, the direct and indirect contact of an infected individual with another of the same family.

It is due to the accumulation of aqueous humor resulting from increased pressure within the eyes. The optic nerve is the part of the eye that carries visual information to the brain. It is made up of over one million nerve cells. When pressure increases in the eye, nerve cells become compressed, which damages them, and eventually even causes them to die. The death of these cells results in permanent visual loss. Early diagnosis and treatment of glaucoma can prevent this.

It occurs most often in people over 50. Cataracts impair vision because the lens loses some of its transparency. The treatment is usually surgical.

It is an inflammation that affects the cornea and the conjunctiva. This disease is caused by viruses. Trachoma is a contagious disease that spreads similarly to conjunctivitis through the hands and contaminated objects. Symptoms are photophobia (high sensitivity to light), pain and tearing.

That is, the lack of vitamin A in the body impairs the reception of light stimuli by the eye sensors. This vitamin deficiency can lead to night blindness and xerophthalmia (corneal dryness, which can also lead to vision loss).

Eye care

As we have seen, the eyes have their own protective structures. But even so, we should have some special eye care, always consulting the doctor:

  • Do not wear glasses without a prescription.
  • Do not use eye drops without medical recommendation.
  • In case of speckle, wash the eye thoroughly without rubbing it.
  • Try to read and write in a properly lit place.
  • When watching television and reading or writing, keep the proper distance. From television, keep at least 1.5 meters from the screen. The book or notebook should be at a distance of 30 cm from the eyes.
  • To use the computer, position yourself within 1 to 2 inches of the monitor. The screen should have its height adjusted just below eye height.
  • Never look directly at the sun as this can cause serious damage to the eyes. Avoid looking directly at intense light source, car headlight, for example.