Cataract formation is a natural part of the eye’s aging process. Cataract surgery is a common procedure; most people regain the vision they had earlier with the help of microsurgery. Patients can usually return home one hour after surgery. General information about cataract surgery.
What Is A Cataract?
Inside our eye is a lens, which is a like clear glass. The lens focuses the light rays coming into the eye on the retina at the back of the eye which is sent to the brain for us to see. For perfect vision the lens should be clear, but with age when the lens becomes cloudy, dull or opaque, light cannot pass through it and the vision becomes dim or blurred. Later when the lens is totally opaque, there is total loss of vision but it is reversible. Any cloudy lens is called a cataract.
Causes of Cataract
- The most common cause of cataract is ageing
- There may be other causes like diabetes, kidney disease, glaucoma, smoking
- Eye injuries (Traumatic Cataract) and inflammation (Uveitis) inside the eye
- Prolonged use of certain medications (Steroids) can also lead to cataract formation
- Cataract in children (Developmental / Congenital / Pediatric Cataract)
Symptoms of cataract
- Painless, gradually decreasing vision.
- Double vision or seeing multiple images
- Trouble with seeing in poor light or sometimes in excessive sunlight
- Becoming sensitive to glare, making night driving difficult
- Difficulty in distance vision and in reading
Treatment for Cataract
In the early stages, you can improve your vision by changing your glasses. But once the cataract progresses, changing glasses will not help. There are no medications, eye drops, or diet changes that can cure or prevent cataract formation. If the cataract decreases vision, the only solution is surgery. DO NOT WAIT FOR THE CATARACT TO GET MATURE as unnecessary delay can lead to avoidable complications and more difficult surgery. Cataract surgery can be undertaken successfully in any season. Summer or rainy season do not have any effect on the outcomes of the cataract surgery
In cataract surgery your natural clouded lens is replaced by an artificial intraocular lens (IOL), which helps incoming light rays to be focused properly.
Several techniques are used for removing cataracts.
Conventional Cataract surgery or Extra Capsular Cataract Extraction (SICS/ECCE)
- Older Method of Surgery
- Done when the cataract is very mature.
- Requires an incision of 7-8 mm
- The cloudy eye lens is removed in one piece
- A hard plastic lens is implanted
- Multiple Stitches are required in ECCE
- Final glass prescription could take even up to 10 weeks
Phacoemulsification is at present universally accepted as the standard of care for cataract surgery
- Incision size: 2.8 mm
- Walk-in Walk-out procedure
- Stitch less, bloodless, painless surgery
- Chances of infection are very low
- Quicker healing and recovery
Ultrasound energy is used in Phacoemulsification to break up the cataract (emulsify) into microscopic fragments which can be sucked out of the eye. The new Foldable lens is then inserted into the eye. Usually no stitches are required to close the incision. This minimal surgery allows faster and safer healing, hastening your return to normal activity.
Foldable Lens Implantation
The surgical wounds have progressively become smaller and now the latest technique is “Micro-coaxial Cataract Surgery (Phacoemulsification)” or MIC S. MICS is Phacoemulsification of the cataract through a wound of 2.2 mm or less, with implantation of an intra-ocular lens through the same wound. Wound healing and refractive stabilization is faster in MICS than in traditional Phaco.
Equipment and Facilities Available in Phaco Refractive Department
Our Hospital is fully equipped with the most modern technology for performing suture less cataract surgeries. We are equipped with The Laureate World Phaco system capable of the Latest Micro-Coaxial Cataract Surgery (MICS), or removal of the cataract through a 2mm (or less) incision with the implantation of foldable intraocular lenses (IOLs).
- Phacoemulsification & Foldable IOL Implantation
- The Laureate World Phaco system (USA)
- Operating Microscope- Carl Zeiss (Germany)
- Biomedix A-Scan (USA): To calculate the correct IOL power
- Alcon AcuScan Immersion Biometry (USA): This method to calculate the correct IOL power is more precise than the conventional contact method
- Shin Nippon AutorefractoKeratometer: To measure of the Curvature of the cornea
- Multifocal IOL’s
- High Contrast Aspheric IOL’s
- Toric IOL’s
Options in Intra-ocular Lenses (IOLs)
The majority of the IOLs implanted are mono-focal. They can focus light rays from one particular distance only. Normally distance objects are clear and one needs glasses for reading We offer our patients the latest in IOL technology including the Hydrophobic Alcon Acrysof IQ, ReSTOR IOL and the astigmatism correcting Toric IOLs. To minimize calculation errors in the implanted IOLs we now have the Immersion Biometry
Aberration Free IOL
What are multifocal IOLs?
Multifocal IOLs (Acrysof ReSTOR) have different segments built onto the same lens which allows clear distance, intermediate & near vision with spectacle freedom for most activities.
What are Toric IOLs?
Traditionally used monofocal IOLs correct only the spherical refractive error. Patients with pre existing astigmatism will need spectacle correction for distance vision and near. Toric IOLs eliminates the need of glasses for distance.
Resuming normal work
One can resume their day to day work even the day after surgery. One could start their work from home or office by 3-4 days, but remember to apply the drops as advised. Normally till the glass correction is given 4-6 weeks after surgery, reading may be difficult, but this is much better after implantation of a multifocal IOL.
Travelling after surgery
There is no problem in travelling even on the day after the surgery. Any amount of travel is absolutely fine provided one remembers to apply the eye drops.
Need for glasses after Phaco surgery
You may need to wear glasses only to fine -tune your vision. These spectacles have normal lenses unlike thick lenses used in the past. If monofocal IOL is used, near vision glasses are almost always required.
Is there any diet restriction after Phaco surgery?
There are absolutely no diet restrictions after Phaco and you can continue with your normal diet. However, diet regulation advised for other diseases like Diabetes, High blood pressure, etc must continue.