Glossary of Laser Eye Surgery Terms: A – B

laser eye surgery glossary


Surgical excision of the cornea using a laser during treatment. Tiny amounts of corneal tissue are evaporated by the cold energy of the laser.


Imperfections in the optical system of the eye that can affect quality of vision. This is measured by Advanced Wavefront laser technology.


Increase in optical power by the eye in order to maintain a clear image (focus) as objects are moved closer; occurs through a process of ciliary muscle contraction and zonular relaxation that causes the elastic-like lens to ’round up’ and increase its optical power. Natural loss of accommodation with age is called presbyopia.


Advanced Vision Care monitors the health of the eye and vision at a series of appointments following laser eye surgery. In most cases, the aftercare schedule lasts for one year and is structured as follows:

1-4 days after treatment (post-op)
1-2 weeks post-op
6 weeks post-op
3 months post-op
6 months post-op
12 months post-op


A condition in which vision does not develop adequately in early childhood because the eye and the brain are not working together correctly. Amblyopia, which usually affects only one eye, is also known as a ‘lazy eye’. A person with amblyopia experiences blurred vision in the affected eye. Treatment for amblyopia can only take place before the age of 8 years for it to be successful and often involves patching the good eye, wearing glasses and/or surgery. Amblyopia cannot be treated in adulthood.


Topical anaesthetic is used to numb the cornea before laser eye surgery and before performing particular diagnostic tests. Once applied, the anaesthetic numbs the cornea within 10-20 seconds, although the duration of effect can last up to one hour in some cases. It is advised not to rub the eyes for one hour after instillation in case excessive force is used.


These ointments or drops are administered regularly for the first few days/weeks after treatment to prevent infection. Oftaquix is commonly used by AVC.


These are lubricating eye drops designed to relieve the symptoms of dry eyes. After laser treatment the eyes may feel dry as they heal. As part of Advanced Vision Care’s post-operative care, each patient receives lubricating eye drops and is regularly reviewed to ensure that the drops are meeting the needs of the healing eye.


The ability to focus on close and distant objects is impaired. This condition is often accompanied by myopia or hyperopia.

Astigmatisms are caused by the irregular shape of the cornea, where it is not equally curved and one side is more curved than the other. This irregular shape often leads to the shape of the eye ball being more like a rugby ball rather than the normal football shape. The irregularity in shape causes a distortion in the light as it passes through the cornea, this results in the light scattering producing a blurry image.


A contact lens which the surgeon places on the eye directly after treatment to protect the eye and reduce post-treatment discomfort. The lens is removed 24 to 48 hours after having LASIK treatment and 4 to 5 days after LASEK.


Referring to both eyes. AVC’s founder and lead surgeon Mr Pillai was one of the first surgeons to carry out bilateral laser treatment in the UK.


Prior to IntraLase, the first step of the LASIK surgical procedure was done manually using a hand-held device with an oscillating metal razor blade called a microkeratome. IntraLase replaces the hand-held blade with a computer-guided laser, delivering micron-level accuracy more than 100 times greater than a microkeratome.


Inflammation of the eyelids, usually with redness, swelling and itching. This needs to be controlled before the eye can be treated with any correction or treatment. Blepharitis treatment usually involves drops, lid hygiene and compresses.


A minor complication where the flap that is created has a central hole. Treatment is abandoned and the flap is put back to heal. The cornea is given time to heal (normally 2 months) and treatment can be successfully re-done.


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