Can't see in the dark

Seek professional care if you experience any of the following symptoms

• Diarrhea

• Unilateral blindness

• Visual field defect

• Blurring of vision

• Cataracts

  Degeneration of the lens inside the eye, causing it to become opaque. As a result, lights appear glaring and vision becomes blurred. In the elderly, cataracts are usually caused by aging, In children however, it may be due to genetic conditions, drugs, or viral infections while in the womb.

• Age-related macular degeneration

  An eye condition that causes a "hole in the center" when looking at things. It is caused by damage to the central retina (sensing layer of the eye). Causes include aging, smoking and genetics.

• Retinitis pigmentosa

  An inherited degenerative disease affecting the retina, which is the nerve layer that lines the back of the eye. It causes loss of night and side vision.

• Abetalipoproteinemia (Bassen-Kontsbike syndrome)