What is Phacoemulsification? A Type of Modern Cataract Surgery

Phacoemulsification is a type of surgical procedure that restores the vision of those suffering from cataracts. After the cloudy eye lens is removed, an intraocular lens (IOL) is then implanted. 

Charles Kelman introduced this technique most popularly in 1967, and then it became a form of minimal invasive extracapsular cataract extraction. As of now, it is one of the most common surgical procedures for cataract extraction around different parts of the globe.

But to expand your understanding of the operation, expert tips from our panel will explain what Phacoemulsification is all about. Also, know what one should know about it concerning cataract surgery.

Understand Phacoemulsification

Phacoemulsification is a cataract-surgery technique in which ultrasound energy breaks up the cloudy natural lens so it can be removed and replaced with an intraocular lens. Anaesthesia is used, but discomfort and recovery vary and the procedure is not risk-free.

The operating ophthalmologist explains suitability, lens choice, expected benefit, alternatives and possible complications after the required examination and measurements.

Since its discovery in 1967, it has changed the face of cataract management into something bigger. Doctors also call Phaco surgery small incision cataract surgery.

Phacoemulsification Process

The surgeon gains access to the lens of your eye within the capsule surrounding it. High-frequency sound waves are transmitted into the eye using a handheld device to produce an emulsified gel-like mass by breaking apart the lens. 

This is subsequently drained by being flushed with sterile fluids and suctioned out of the eye using a vacuum source (aspiration).

This hand-held ultrasound device is referred to as a phaco machine. It has features such as handpieces, a foot pedal, and irrigation and aspiration systems. Irrespective of that, it also has a variety of tips bent at different angles to accurately deliver the ultrasonic energy. 

Phacoemulsification procedures

Pre-surgery, your eye doctor will:

• Record your medical history in detail to check concerning diseases like diabetes, hypertension, and blood disorders.
• Ask you to stop blood thinners and antihistaminics a few days before the procedure
• Examine your eyes with an ultrasound
• (May) prescribe prophylactic eye drops a week before the surgery
• Ask you to avoid alcohol at least 24 hours before the surgery.
• Ask you to fast for at least 8 hours before the procedure

1. Preparation

Pre-surgery, there's an eye examination that every patient must go through to find out whether he/she is fit to go under a knife. On the surgery day, topical or local anaesthesia is given to numb your eyes so you don’t feel any pain.

2. Incision

A small incision of 2-3 mm is made at the cornea edge by the surgeon. This small incision is completely self-sealing, has little pain relief, and does not require stitching.

3. Capsulorhexis

After the incision, an opening circularly is created in the thin membrane enveloping the cataract lens. 

4. Emulsification

An ultrasonic probe is inserted, so he vibrates the tip with ultrasound waves, thereby breaking up (or emulsifying) the cloudy lens into very tiny fragments. This is accomplished using cavitation, which means the creation of gas bubbles that disassemble lens material.

5. Aspiration and new lens implantation

After emulsification, the pieces are then aspirated using the same probe as though it were an excision, thus, effectively removing the cataract from the eye.

After the extraction of cataracts, the artificial intraocular lens implants are inserted into the empty capsule where the natural lens used to be.

6. Postoperative Care

The procedure normally takes less than an hour so that a patient can go home on the same day. Further appointments are set up to check on being healed and the improvement in vision.

Post-procedure (After the surgery)

Generally, complete recovery from phaco cataract surgery may take about two to four weeks. Till then, do follow these tips:

• You will be under observation in the recovery room for half an hour immediately after surgery and until the anaesthesia wears off.
• Family members or friends need to take you home since you can not drive as a result of blurred vision.
• Follow the instructions given by the surgeon for a faster recovery process, and stay at rest for the time necessary.
• You will be blurry in sight for the first 24 to 48 hours, so avoid activities like watching television, using the computer, and reading for then. There could be other side effects such as popped blood vessels and bruises for a few days. 
• The eye drops prescribed by your surgeon help in infection and complication control post-operation. These may be antibiotic, steroid, lubricating, and anti-inflammatory drops.
• Keep away from dust and filth.
• Use a protective eye shield during the night, whilst sleeping, to protect the operated eye from any damage or unintended rubbing.
• Wear protective sunglasses when outdoors, avoid lifting heavy things, don't drive, and avoid bending down.
• Do not take head baths, wash your face, drive, or cook for the next 2 to 4 weeks after the surgery.
• For 4 weeks at least, keep yourself from swimming, saunas, and hot tubs.
• Do not apply eye makeup for four weeks after surgery. 

Advantages of phacoemulsification

1. Less Invasive

A phacoemulsification surgery only requires a small incision of just 2 to 3 mm. That is fairly smaller compared to the already small traditional incisions for cataract surgeries (around 11 mm). Because the incision creates less trauma to the eye and thus promotes faster healing.

2. Incisions That Seal Themselves

 The small incisions involved in phacoemulsification are self-sealing; that is to say, there is no necessitate for stitches most of the time. This feature minimizes complications associated with incision size and recovery time. 

3. Reduced Chances of Astigmatism

As a result of its small incision site, surgically induced astigmatism is relatively rare: thus, more patients might expect better visual results and lesser dependence on spectacles after surgery. 

4. Quick Recovery

 Patients usually recover quite quickly; most can go back to their normal routine within a day after the procedure. This is one of the things that draws people towards phacoemulsification. 

5. High Success Rate

 Phacoemulsification has a high success rate so high, approximately 98 or 99 percent, which underlines it as one of the most effective surgical procedures for restoring vision in cataract patients. 

6. Less Complicated Procedure

Phacoemulsification is generally faster and less complicated than the traditional method and so results in less time for operation and hospitalization. Most patients usually go home on the same day of their surgery. 

7. Early Restoration of Vision

Such that most patients find the first few days following the procedure with very obvious improvement in vision, and this is due to the precision and efficiency of the phacoemulsification technique.

Disadvantages of Phacoemulsification surgery

• Phacoemulsification may not be appropriate for all cataract patients, and some individuals might find that ECCE or FLACS is preferable. While ECCE is cheaper, FLACS is better for complicated or advanced cataracts.
• Expensive instruments are required for this extremely mechanized operation, making it costly.
• Requires well trained highly skilled professionals.
• Not a good candidate for phaco surgery would be a patient with hard cataracts and with weak/loose zonules. 
• A rare complication termed dropped lens or dropped lens nucleus can occur due to phacoemulsification. It is when the broken pieces of the lens fall into the eye's vitreous humour (the gel-like liquid filling the back of the eye). This may further require treatment.

What are phacoemulsification surgery requirements?

There are some key eligibility criteria before performing phacoemulsification surgery:

1. Manifestations Of Visual Impairment

Visual impairment must be adequate due to cataracts and it should affect daily routine activities. Seeing clearness, glaring, and seeing poorly at night.

2. Eye Health Overall

Good overall eye health. The presence of other ocular conditions like severe glaucoma, diabetic retinopathy, or macular degeneration may affect if conditions complicate the surgery or make recovery difficult.

3. Absence of Other Eye Conditions

Patients whose eye diseases or conditions may affect the chances of success following surgery treatment are generally considered unsuitable candidates. Examples are retinal detachment and major corneal opacities.

4. Realistic Expectations

Must have realistic expectations regarding the results of surgery. One must understand the possible side effects and advantages of phacoemulsification.

5. Age

The age restriction does not exist; however, the oldest ones normally come into this surgery category as cataracts tend to be more present in them than younger ones. Nevertheless, sometimes the younger candidates may opt for it.

6. Informed consent from Patients

Patients should be able to give informed consent, meaning they understand this procedure and its implications.

7. Capability for post-operative care

Applicants must be able to follow post-operative care protocols, follow work visits, and recover properly.

8. Profession Disallowance

Phacoemulsification may be recommendable to some professionals (like pilots and drivers) because good vision is one of the requirements in their profession.

Conclusion 

Phacoemulsification is a commonly used cataract-surgery technique. Recovery and visual outcome vary by patient. Vision Concern can provide eye assessment and ophthalmology referral guidance; it does not claim to perform cataract surgery.

FAQs

1. Is phacoemulsification different from traditional cataract surgery?

Ans: Phacoemulsification generally uses a smaller incision than older extracapsular techniques, but the appropriate method and individual risk depend on the patient and operating ophthalmologist.

2. Can phacoemulsification be done using a laser technique?

Ans: Femtosecond laser assistance may be used for selected steps of cataract surgery, while ultrasound phacoemulsification may still be used to remove the lens. Availability, suitability and expected benefit should be discussed with the operating ophthalmologist.

3. Do I need glasses after phacoemulsification surgery?

Ans: Many patients experience quite a significant improvement in vision, meaning they need not wear glasses for distance vision, but may sometimes require reading glasses for related tasks.

Authoritative Cataract-Surgery Reference

For patient guidance on cataract surgery, pre-operative measurements, benefits and risks, see the National Eye Institute cataract-surgery guide. Phacoemulsification suitability and surgical planning require an ophthalmologist.