Cataract/Lens Surgery London

Standard phacoemulsification cataract surgery

This is a day case procedure carried out under local anaesthetic and sedation. Due to her experience Sharmina Khan usually employs topical (drops) anaesthesia and only subtenons (injection around the eye) if the case is higher risk. Sedation allows for a more relaxed patient experience.

Phacoemulsification cataract surgery is a modern method of cataract removal and replacement with a biocompatible lens implant inside the eye. The cloudy crystalline lens is called the cataract inside the eye, positioned behind the clear window of the eye (cornea) and the coloured party of your eye (iris).

The cataract is accessed through a 2.2mm incision made through the cornea using a pen-like phaco-probe.

This probe vibrates at ultrasonic frequency. It softens (emulsifies) the cataract and breaks it into small manageable pieces which are then aspirated (sucked out) along fluid filled plastic tubing away from the eye.

A foldable implant is inserted into the eye like a taco and this opens up for ideal lens placement.

This is a refractive opportunity to reduce your spectacle dependence or make you almost spectacle independent and achieve sharper focus by employing either blended mini-monovision or trifocals.

Sharmina Khan routinely carries out cataract surgery using topical anaesthesia and sedation, which allows for faster visual recovery and a stress-free experience for her patients.

Femtosecond laser assisted cataract surgery (FLACS)

This is a premium day case procedure carried out under local anaesthetic and sedation. Due to her experience Sharmina Khan usually employs topical (drops) anaesthesia and only subtenons (injection around the eye) if the case is higher risk. Sedation allows for a more relaxed patient experience.

Femtosecond laser assisted phacoemulsification cataract surgery is a the most modern method of cataract removal and replacement with a biocompatible lens implant inside the eye.

The cloudy crystalline lens is called the cataract inside the eye, positioned behind the clear window of the eye (cornea) and the coloured party of your eye (iris).

Femtosecond laser works using ultrafast pulses in the range of 10-15 seconds and reduces the energy requirements for tissue destruction ie breaking up the cataract into smaller pieces. The modality was approved by FDA in USA in 2010.

Sharmina Khan employs this technique as the first step in the surgery, the laser is able to penetrate through the cornea into the eye and create a perfectly circular 5.0 – 5.5 mm diameter opening on the front surface of the cataract/lens, followed by fragmention of the natural crystalline lens into smaller pieces.

The cataract is then accessed, through a 2.2mm incision, using a pen-like phacoemulsification probe. This probe vibrates at ultrasonic frequency of 50mHz. It phacoemulsifies (softens) the cataract and breaks it into small manageable pieces which are then aspirated (sucked out) along fluid filled plastic tubing away from the eye.

A foldable intraocular lens implant is inserted into the eye like a taco and this opens up for ideal lens placement. This is a refractive opportunity to reduce your spectacle dependence or make you almost spectacle independent and achieve sharper focus by employing either blended mini-monovision or trifocals.

Sharmina Khan routinely carries out femtosecond laser assisted cataract surgery (FLACS) using topical anaesthesia and sedation, which allows for faster visual recovery and a stress-free experience for her patients.

Refractive Lens Exchange or Lens Replacement Surgery

Refractive lens exchange is also known as clear lens extraction or lens replacement surgery.

This is a refractive opportunity to improve your prescription, achieve sharper focus and make you less spectacle dependent or almost spectacle free. This may be a better option than LASIK, PRK or phakic IOLs in those who are presbyopic or have high hyperopia (farsightedness). Sharmina Khan works closely with laser refractive surgeons to ensure her patients are appropriately counselled.

Patients undergoing refractive lens exchange are offered either standard phacoemulsification or femtosecond laser assisted phacoemulsification surgery followed by placement with a biocompatible intraocular lens implant inside the eye.

Sharmina Khan routinely carries out refractive lens exchange using topical anaesthesia and sedation, which allows for faster visual recovery and a stress-free experience for her patients.

Intraocular lens exchange

This high risk procedure is carried out by an experienced lens surgeon under local subtenons (injection around the eye) anaesthetic and sedation for a more relaxed patient experience.

Intraocular lens exchange after cataract surgery is unusual and is carried out when an intraocular lens dislocates from a well-centred position due to previous intraocular surgery, ageing and weakened zonular support structures from a condition such as pseudoexfoliation. The incidence is not clearly defined and has been reported as approximately 2.5 cases per 10 000.

The procedure may be associated with a suboptimal visual outcome if compared with primary cataract or lens replacement surgery and so patients are carefully counselled by Sharmina Khan before proceeding.

The surgery involves removal of the intraocular lens inside the eye and replacing it with a new intraocular lens implant in the same anatomical location if there are adequate support structures otherwise in a more suitable location such as the sulcus or anterior chamber or clipped to the iris.