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Cataract & IOL

Cataract is a cloudiness or opacity of the eye’s natural clear lens. It obstructs the passage of light to the retina of the eye and impairs vision. When the lens develops cloudiness to the point that it impairs vision, it is called Cataract. It is like looking through a frosted glass.

What Causes Cataracts?

The eye functions much like a camera. Light rays enter the eye, passing through the cornea, the aqueous humor -- transparent fluid in the front of the eye -- and then the pupil and into the lens. The lens bends the light rays to focus objects onto the retina lining the back of the eye. From there, the image passes through the retinal cells, into the optic nerve, and finally to the back of the brain which process the images.

Cataracts occur when there is a buildup of protein in the lens that makes it cloudy. This prevents light from passing clearly through the lens, causing some loss of vision. Since new lens cells form on the outside of the lens, all the older cells are compacted into the center of the lens resulting in the cataract.

Types of cataracts include:

Age-related cataracts : As the name suggests, this type of cataract develops as a result of aging.

Congenital cataracts : Babies are sometimes born with cataracts as a result of an infection, injury, or poor development before they were born, or they may develop during childhood.

Secondary cataracts : These develop as a result of other medical conditions, like diabetes, or exposure to toxic substances, certain drugs (such as corticosteroids or diuretics), ultraviolet light, or radiation.

Traumatic cataracts : These form after injury to the eye.


  • Decreased in Contrast & Brightness.
  • Difficulty while driving.
  • Multiple moons at night.
  • Difficulty while reading.
  • Difficult to recognize people.

Treatment For Cataract

Surgery is the only option for treatment of cataract. In surgery, the surgeon removes the clouded lens & puts an Intraocular Lens (IOL) in the patient's eye to restore pre-cataract vision.

Surgical Techniques

Femtosecond Laser Technology

  • 100% Blade free surgery
  • The actual working of the laser takes less than 1 minute
  • Capsular opening, fragmentation of cataract with laser & corneal incisions are fully automated to deliver precise cuts and is more accurate than manual blade incision
  • Reduces phaco energy by more than 50%
  • Enables Astigmatism correction at the time of cataract surgery
  • Greater safety, precision & accuracy
  • Better visual outcome with quicker recovery

Micro Incision Cataract Surgery

  • Requires a very small incision of about 2mm
  • Cataract is emulsified into small pieces by phacoemulsification and a foldable IOL is implanted
  • Walk-in, Walk-out procedure
  • Stitchless, bloodless, painless surgery

Phacoemulsification Treatment

  • Requires a small incision of 3.2 mm
  • Stitchless surgery
  • Cataract is emulsified and removed using an ultrasonic phacoemulsification probe
  • Foldable IOL is implanted

IOL Surgery

Before the development of intraocular lenses, people use to wear specialized contact lenses and thick eye glasses for clear vision after the eye surgery. Now, with cataract lens replacement, several types of IOL implants are available to help people enjoy improved vision.

How IOLs work

An IOL focuses light that comes into your eye through the cornea and pupil onto the retina, the sensitive tissue at the back of the eye that relays images through the optic nerve to the brain. Most IOLs are made of a flexible, foldable material and are about one-third of the size of a dime.

Determine which lens option is right for you?

  • Before surgery your eyes are measured to determine your IOL prescription and compare options to decide which IOL type is best for you, depending in part on how you feel about wearing glasses for reading and near vision.
  • The type of IOL implanted will affect how you see when not wearing eyeglasses. Glasses may still be needed by some people for some activities.
  • If you have astigmatism, we will discuss toric IOLs and related treatment options with you.
  • In certain cases, cost may be a deciding factor for you if you have the option of selecting special premium lOLs that may reduce your need for glasses.
  • Difficulty while reading.
  • Difficult to recognize people.

Types of Intraocular (IOL) Lens

Monofocal Lens
Monofocals are set to provide best corrected vision at near, intermediate or far distances.

Multifocal or Accommodative Lenses
In the multifocal type, a series of focal zones or rings is designed into the IOL. Depending on where incoming light focuses through the zones, the person may be able to see both near and distant objects clearly.

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