Understanding Cataract Symptoms In Humans


We should know what cataract symptoms in humans, causes, therapies, up to the complications that can be happened. The cataract, also called cataract (Greek), is an eye disease and is a frequent cause of blindness. It is a cloudiness of the originally clear eye lens. The gray star is the most common eye disease worldwide. Especially the elderly are affected.

When this opacity begins to reduce vision, it is called cataract or cataract. The light can penetrate the cloudy eye lens only badly, the man looks as through a slight veil, it comes to glare sensitivity and a rigid view (hence the name Star).

Three stages of lens dislocation are distinguished:

Beginning gray star, i. low turbidity
In the advanced cataract, turbidity is highly advanced
In the mature gray heaviness, it is a completely clouded lens, that is, man is blind

Cataract Symptoms In Humans


The cause of the cataract is changes in the protein molecules from which the lens fibers of the ocular lens are built up. These lens proteins lose their exact microstructure and hence also their light permeability. The eye lens becomes opaque.

This is comparable with a hen’s egg, in which the former vitreous and transparent albumen changes its structure by heating, and becomes white and solid. In this example, it is also clear that a turbidity of the ocular lens (degeneration of the lens protein) which has once occurred can not be reversed.

Risk factors that can lead to lens dislocation

  • age
  • Accumulation of the disease in the family
  • malnutrition
  • Chronic diseases, e.g. Diabetes disease (diabetes mellitus)
  • Eye injuries, chronic eye infections
  • Strong solar radiation (UV-injury of the lens)
  • Long-term use of certain drugs

Here are Cataract Symptoms In Humans:

Complaints that can indicate a cataract include:

  • Drop in visual acuity
  • Blurred vision
  • Glare sensitivity (especially at night) and possibly double images
  • Fading the colors
  • Frequent changes in vision (despite the deterioration of reading ability)


Various investigations and clarifications are carried out to diagnose the cataract. These include:

History of the patient (anamnesis) including the symptoms
Examination of the eye by the ophthalmologist


The only, really helpful treatment is surgery; it leads with a high probability to a good success and is practically painless. During surgery, the opaque lens is removed and replaced by an artificial one. The usually performed outpatient procedure usually takes place in local anesthesia.

Possible complications

Undesirable lens dislocation can not be reversed. The degree of reduced vision determines whether an operation needs to be done. First, however, other diseases must also be excluded e.g. Retinal diseases, optic nerve diseases, strabismus.

If no treatment is performed, the opacity may proceed to blindness. General complications of an operation such as wound healing, infections, or bleeding are rare in star surgery. As specific complications, opacities of the lens capsule, turbidity or swelling of the cornea or injuries of the lens holding apparatus occur.

For finding another review about cataract symptoms in humans click here

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