A cataract is the clouding of the normally clear lens of the eye. Cataracts are common among older people and are usually a “normal” part of the ageing process. Vision deteriorates and colours fade progressively. Cataracts can only be removed by surgery.
- Vision deteriorates slowly and the patient becomes increasingly short-sighted
- Seeing through cloudy lenses is like looking through a foggy window, and colours look matte (shades of grey)
- Light from the sun or a lamp seems too bright or glaring (car headlights)
- The clouding of the lens slowly becomes visible from the outside as a silvery, whitish to brownish blemish behind the pupil
Causes and treatment
- Age-related cataracts (most common)
- Diabetes mellitus
- Underactive thyroid (hypothyroidism)
- Traumatic injury to the lens
- Congenital cataracts
- Medication (in particular long-term use of cortisone)
Further treatment by your doctor / in hospital
- Examination of the eye with an ophthalmoscope (by an eye doctor)
- Operation to remove the cloudy lens and replace it with an artificial lens
Not every developing cataract has to be operated on immediately, and the best time for surgery should be discussed with the eye doctor.
When to see a doctor?
- When vision impairment occurs or continues to worsen