Cataract surgery involves removing the eye's natural lense or the opacified "crystalline lens" without damaging the "capsular bag" in which it is found.

This capsular bag must be polished and left transparent before finalising the surgical operation, given that this is when the artificial intraocular lens is implanted to substitute the eye's natural crystalline lens.

Months or years after cataract surgery, the patient may notice reduced vision. This is due to an opacification of a part of the capsular bag called the "posterior capsule". A posterior capsule opacity, known in the past as a "secondary cataract", is treated quickly and simply via a procedure called a Nd:YAG laser posterior capsulotomy.

Treatment involves restoring transparency to the posterior capsule by making an opening in it with a Nd:YAG laser without the need for incisions. 

To perform a capsulotomy, the pupil is dilated using eyedrops around 30 minutes before the procedure. Then some anaesthetic drops are applied and the laser is applied. This is painless and usually lasts a few minutes.

Very rarely, in cases where patients do not cooperate adequately, a lens is put on top of the eye. Once the procedure is finished, anti-inflammatory and anti-hyperintensive eyedrops are applied and the patient is discharged after checking that everything is in order.  

It is an outpatients treatment and does not require any prior preparation by the client. It is advisable that you are accompanied by someone as you may experience passing glare due to the light of the microscope used to carry out the procedure. You can usually resume your daily activities the day after the operation.  

After a few days during which anti-inflammatory eyedrops should be used, an eye check-up is performed to monitor the patient's progress and the final results.