In Phaco technique, a small incision is placed in the eye and a hollow Phaco needle is introduced through the opening. On giving energy through the tip of the Phaco needle, the cataract lens gets dissolved and is sucked out through this needle. An artificial lens called a foldable Intra-ocular lens is now injected through this small opening. Once inside the eye, it opens up and serves to replace the original lens. Since the eye opening is very small and designed in a special manner, it self-seals and no sutures are required. Hence this procedure is also popularly known as ‘Stitchless’ cataract surgery.

Regular Phaco Cataract Surgery

This is a surgical technique wherein the cataract is emulsified using ultrasonic energy. The incision size is about 3.0mm.

IOL Options For Regular Phaco

Lenses used is Regular Phaco are slightly hard and have to go through a 3.0mm incision.

Aurovue lenses are manufactured by an Indian Company – Aurolab. These lenses are Monofocal type lenses, which means they provide good vision only for distance. For near work or fine work, one may need to wear additional spectacles. These lenses are considered as entry level options for cataract surgery and are recommended for somebody on a low budget.

Akreos AO are similar to Aurovue lenses, however these are imported lenses and are manufactured by Baush &Lomb (USA). These lenses are Monofocal type lenses, which means they provide good vision only for distance. For near work or fine work, one may need to wear additional spectacles. These lenses are considered as entry level options for cataract surgery and are recommended for somebody on a low budget.

Acrysof SP are imported monofocal lenses manufactured by Alcon (USA). These lenses provide excellent vision for distance. For near work or fine work, one may need to wear additional glasses. These lenses are also preferred in Diabetic Patients. It is also a recommended option for somebody opting for a monofocal lens in Regular Phaco surgery.

Multifocal lenses provide good vision at varying distances i.e Near, Intermediate & Distance.

iDiff lenses are multifocal lenses manufactured by Care Group. These lenses provide good vision for near and distance, which means that a person can easily carry out regular day to day activities with distance vision and also do near work such as reading and writing comfortably without use of additional spectacles. iDiff Lenses however do not correct intermediate vision.

Multifocal lenses provide good vision at varying distances i.e Near, Intermediate & Distance.
Tridiff lenses are multifocal lenses manufactured by Care Group. These lenses provide good vision for near, intermediate and distance, which means that a person can easily carry out regular day to day activities with distance vision, also do intermediate distance work such as working on laptop and also carry out near work such as reading and writing comfortably without use of additional spectacles.

An eye can have two types of power–spherical power which is because of the natural lens within the eye and cylinder power which is because of the dissymmetry in the curve of the cornea. Monofocal and Multifocal Lenses can only correct the spherical component of the eye leaving behind the cylinder power which has to be later corrected by additional prescription glasses. Toric Lenses can correct both spherical and cylinder components of eye. Toric lenses are recommended if you have a high pre-existing cylinder or astigmatism in your eye.

Micro-Phaco Cataract Surgery

This is the technique where the cataractous lens is dissolved and aspirated through a 2.2mm micro incision and a special supersoft Intra Ocular Lens is introduced through the same incision. The incision in the Microphaco technique is much smaller than the incision in a Regular Phaco technique. Microphaco is designed to speed the recovery of vision, improve visual outcomes and reduce the restriction on your activities after the surgery. The machines used for Microphaco is either the Centurian machine from Alcon (USA) or the Stellaris machine from Bausch & Lomb (USA), both of which are in use at the Eye7 centers. Features of Micro-Phaco:

  • Micro-incision
  • No stitch
  • Walk in- Walk out Surgery
  • Faster recovery
  • Reduced need for glasses

IOL Options For Micro Phaco

Lenses used in Micro Phaco surgery are soft lenses which can easily go through a micro incision of 2.2mm

Acrysof IQ is an imported monofocal lens manufactured by Alcon (USA). These lenses provide excellent vision for distance. For near vision however, a person may require additional reading glasses. This lens also contains a yellow pigment chromatophore which blocks harmful UV rays and the blue rays from entering the eye and damaging the retina.

Tecnis Symphony is a multifocal lens manufactured by Abott (USA). This lens provides excellent distance and intermediate vision (computer working), however for near work or very fine work one may require additional reading glasses.

Zeiss trifocal lenses are multifocal type lenses manufactured by Zeiss (USA). These are the only lenses which provide excellent vision for near, intermediate and distance.

These lenses have all the properties of Acrysof IQ along with cylinder correctiion capability. An eye can have two types of power–spherical power which is because of the natural lens within the eye and cylinder power which is because of the dissymmetry in the curve of the cornea. A normal lens can only correct the spherical power leaving behind the cylinder power which has to be later corrected by additional prescription glasses. Toric lens corrects both the spherical and cylinder power in the eye. Toric lenses are recommended if you have a high pre-existing cylinder or astigmatism in your eye. This lens is manufactured by Alcon (USA).

Cylinder correction in Phaco Cataract Surgery

Cataract surgery has now become a refractive surgery and the goal is not just to remove the opacified cataractous lens but also to reduce dependency on glasses.

A routine Cataract surgery can only correct the spherical component of the eye leaving behind the cylinder power which has to be later corrected by additional prescription glasses.

With advancements in surgical techniques and IOL (artificial lens) designs, today both spherical and cylinder components of eye can easily be corrected with highest precision.

The cylinder component in Phaco Cataract Surgery can be corrected by two ways

    1. Toric Lenses with Verion Digital Axis Marking: 
      Toric lenses are special lenses which have both cylinder and spherical component build in one lens. Since cylinder axis varies in individual eyes, the lens has to be aligned to specific axis of the individual. In such cases even a minor deviation from the original axis can cause significant disturbance in final visual outcomes. Now with the introduction of Verion Digital Axis Marking system, these toric lenses can be aligned with outmost precision, upto 1 degree.
    2. Toric Lenses with Manual Marking: As discussed above, the final visual outcome in a toric lens depends on how precisely it is aligned to the original cylindrical axis of eye. Since the manual markings cannot be as precise as digital markings, the manual system may give slightly inferior results compared to the digital system.

Above is an attempt to give a broad idea about these two procedures. Different outcomes may be experienced depending upon individual variations. The decision the chose the best procedure rests with your eye doctor after detailed examination of your eye.

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