Causes of poor vision and treatment and prevention

Low vision is a common condition among many people of all ages, but it is more noticeable in the elderly and means a problem in the ability to see properly.

Types of poor eyesight

In the normal state of view, the image of the object is seen in the retina and any imbalance in this erosion causes imbalance in vision and the most famous 3 types of vision impairment are:

D – Look

It is expressed by the loss of the ability to see nearby objects, ie, that the image of the body falls behind the retina. Nearby objects appear confused and blurred. Approximately 10% of people are considered to have hyperopia. It is important in this case to see a doctor every year because hyperopia may be associated with other diseases such as glaucoma.


It is the loss of the ability to see distant objects, meaning that the image of the body falls in front of the retina and the distant objects appear unclear.
Many research suggests that prolonged work at close distances to the eye, such as reading or sitting in front of a computer for long hours, may cause short-sightedness.


We mean it scientifically that when the person looks at a point, one eye looks upright The second eye indicates a different direction and may be caused by a genetic or a defect in one of the muscles of the eye or may occur due to surgery in the eye.
It can be corrected using either contact lenses or eyeglasses, or it is possible to correct the deviation of the muscles of the eye by injecting the specialist doctor special substance in the muscles that suffer from the deviation and tightening the muscles in the opposite side to return the eye to the correct anchor.
The weaknesses in this era are increasing mainly because of the overuse of technology as it is available to most people.
There are several concepts that we include under the term low vision:
  • Lack of central vision: blindness at the central point of view.
  • Lack of side vision: any blindness in various aspects of the eye except the central point.
  • Rituals (blurred vision at night or in dim light).
  • Blurring of the eye: the patient cannot see things in focus, whether near or far for several reasons, including short-sightedness or hyperopia or excessive use of contact lenses or because of chronic dryness in the eye.
  • Blurry vision: where the person appears as if there is a thin membrane covering the visual field in front of what causes blurred vision.

Causes of low vision:

There are many reasons for low vision, including:
  • Lazy eye which causes ignoring messages from the eye to the brain.
  • Genetic factors A family story can be the cause of poor vision.
  • Retinal injury for some reason such as diabetes.
  • Glaucoma: It damages the optic nerve as a result of excess pressure inside the eye.
  • Retinoblastoma.
  • Albinism.
  • Watching and overwork.
  • Malnutrition Any lack of certain substances and elements necessary for eye safety and available in food.
  • Macular degeneration refers to macular degeneration, an area of ​​the retina responsible for central vision.

Poor vision in children

There are several signs that children have poor eyesight:
  • Rub the eye frequently.
  • Persistence of the eye or eyelid.
  • Swelling and redness of the eye and eyelid.
  • Sensitivity to light ie the inability to direct looking at light directly.
  • The child complained of blurred vision and blurred things.
  • Observe that the child brings objects closer to him so that he can see them clearly.
  • From here, you should go to the ophthalmologist who performs several tests, the most important of which is the Snellen test. Ophthalmology, intraocular pressure test using “eye tension” device and other tests…
    Ways of treating or reducing myopia vary from using eyeglasses, lenses or lasers and in some cases correcting surgery.
    Some people may resort to strengthening their eyes naturally by looking at distant objects and meditating them like the moon or the stars or a distant mountain and try to focus the consideration on a specific point that helps strengthen the muscles of the eye and increase visual acuity.
    There are several types of food containing elements recommended to be taken to strengthen the vision and prevention of low vision, including:
    • Omega 3: It is found in tuna, sardines and other seafood.
    • Vitamin D: Available in egg yolk, beef, and cheese.
    • Vitamin A: The most important sources of dates and carrots.
    • Vitamin C: Available in strawberries and broccoli.
    • Vitamin E: in nuts and sunflower sowing.
    • Zinc: in poultry and skim meat.
    Apricots, mangoes, and other orange-colored fruits and vegetables also contain high levels of beta-carotene, which is essential for night vision.
    Non-visual tools are designed for people with low vision to help them in their life activities, including high-contrast clocks, text reading software, large-scale writing, and more.

Laser treatment of low vision:

  • Some people prefer laser surgery to correct their eyesight due to its impressive results in addition to the short duration of the operation between only 15 to 20 minutes, which motivates many patients to perform. After the recent spread of this process, the lives of many patients with low vision have changed for the better by dispensing with glasses and lenses.
    The operation is aimed at correcting all types of vision impairment (hyperopia, nearsightedness, deviation) and is considered a type of eye surgery.
  • The results do not appear immediately but need a short time after the operation and note on the person in the first days of the procedure redness of the eye and high sensitivity to light and a desire to rub the eye or eyelid.
    Therefore, it is necessary to adhere to the prescription of the attending physician of drops and analgesics and also prevent rubbing the eye or the use of cosmetics around the eye and must cover the eyes with medical bandages at night.
    Despite its amazing results and benefits, there are some downsides that we observe in the first hours after the operation, including:
    • Discomfort of the patient from lighting.
    • Dry eye.
    • Sometimes keratitis.
    In people with severe vision impairment, part of their low vision may remain beyond the procedure.
    Sometimes this procedure is prohibited for people who do not suit them and this is determined by the doctor.
    The eye is our window to the outside world and this is an invaluable blessing as it is an indispensable sense in our lives must be maintained and not neglected.
    The strong light and the long use of mobile phones and computers exhausts the eyes, so we should minimize their use as much as possible and use them rationally as we advise girls to stay away from poor quality cosmetics.

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Written by Sidney Sheldon


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