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Cataract

Facility – Cataract​

The natural lens in our eye is normally transparent and allows light to reach the retina. Cataract is described as a condition in which the normal natural human lens of the eye turns cloudy with aging / other causes and later becomes opaque. When it becomes opaque (Cataract), sufficient light does not reach the retina and the patient is unable to see clearly.Untreated Cataract is the most common cause of blindness in our country.

Causes & Symptoms of Cataract

The main causes of the formation of cataract are:

  • Aging
  • Ultraviolet light exposure.
  • Deficiency of protein and vitamins.
  • Exposure to steroids and various other medications
  • Injuries
  • The main causes of the formation of cataract are: Diabetes

Symptoms:

  • Blurring of image in bright light.
  • Double images.
  • Image distortion.
  • Unequal vision in eyes.
  • Frequent change of glass
  • Halos and Glare
  • Loss of contrast and color vision

Types of lens used​

Choice of IOL

A Patient can use any of the following IOLs ( Intraocular Lens)

These lenses are made of a material which basically attracts water causing posterior capsular opacification and blurring of the vision in few years. These quality lenses are time tested can be injected through a small opening. They are not high definition lenses.

These lenses do not attract water. Are most biocompatible and has least incidence of posterior capsular opacification.These are well recommended, specifically for the Patients with, Diabetes, Traumatic cataract and Children with cataract

Regular spherical intraocular lens has the inherent limitation of refracting multiple focal points due to inherent change in curvature of the lens. This affects the quality of vision. Aspheric monofocal lens eliminates this limitation and enhances the quality of vision. The lens gives the best quality of vision after cataract surgery by eliminating the spherical aberrations as in the case of High definition TV.

Most intraocular lenses take care of distance vision. For near vision or for computer work one needs to wear correction glasses (spectacles). However, multifocal intraocular lens takes care of distant, intermediate and near vision and therefore, the persons can perform all their activities without correction glasses except for very fine prints.

In some patient the surface of the cornea may be curved more in one direction than in the other, called corneal astigmatism. Persons with corneal astigmatism have blurred or distorted vision. In these cases, after cataract surgery they may not regain high-quality vision unless the astigmatism is also corrected.

This astigmatism can be corrected by implanting TORIC intraocular lens.

These are Extended Depth of Focus lenses. Here the Patient’s distant and intermediate vision is clear which means one can see clearly at intermediate distance without the aid of glasses unlike monofocal lenses. But patient may require glasses for reading.

Treatment:

  • SURGERY
  • Foldable intraocular lens (IOL)
Treatment is a surgery where clouded lens (cataract) is removed and replaced with artificial lens (IOL) inside the eye. Apart from the matured cataracts, even immature cataracts need to be removed if it hampers the patients’ visual requirements. There is no need to wait for the cataract to ripen as was thought in earlier times. This technique is a marvel of modern medical technology and is performed as a daycare procedure. In this procedure the clouded lens is fragmented with ultrasound vibrations, into tiny pieces and removed through a small self-sealing 1.8mm-2.8mm opening.

It is
 
  • Stitch less
  • Bloodless
  • Painless, No Injection (Only anaesthetic drops)
  • More controlled operation

It helps Patient in
 
  • Early rehabilitation
  • Less post operative discomfort
  • Less induced astigmatism
  • Minimum post operative restriction
  • More satisfied general condition & vision
 
Cataract extraction is by phacoemulsification through a very small incision and foldable/injectable lens implanted through it. It is a precision technique performed under an operating microscope. The foldable lens is injected through the small opening and it opens inside the eye to the normal size.

Advantages
 
  • Wound healing is faster
  • Wound stability is better
  • since the entire surgery is done through a very small opening
  • Induced astigmatism is minimal
  • Decreased glare
 

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