facebook
spears_logo

Top Recommended
Click to explore ranking

tatler_logo

Featured in
The Tatler Address Book

doctify_logo

Outstanding
Click to see reviews

spears_logo
tatler_logo
doctify_logo

What is a YAG laser?

3 min read

A YAG laser is a neodymium-doped yttrium aluminium garnet (Nd:YAG) laser used in ophthalmology to treat posterior capsule opacification following cataract surgery. The term “YAG” refers to the crystal used as the laser medium, yttrium aluminium garnet, which, when doped with neodymium ions, produces infrared laser light at a wavelength of 1064 nanometres. ¹

The Nd:YAG laser works through a process called photodisruption. When focused on tissue, the laser delivers extremely high energy in an extremely short pulse, typically measured in nanoseconds. This creates a localised plasma formation that mechanically disrupts tissue at the point of focus. ² In the context of posterior capsule opacification, the laser creates a precise opening in the clouded posterior capsule without the need for incisions or physical contact with the eye.

The laser system consists of the laser source, a delivery system incorporating a slit lamp biomicroscope for visualisation, and a focusing mechanism that allows the surgeon to target the posterior capsule accurately. A contact lens is placed on the eye during the procedure to stabilise the globe and provide optical coupling. ²

YAG laser platforms from major manufacturers, including Ellex, Lumenis, and Nidek, are functionally equivalent in clinical performance. ¹ The relevant consideration is not which machine is used but whether it is properly maintained, calibrated, and operated by experienced clinicians who can select appropriate energy settings for individual cases.

References

  1. Chawla H, Sharma N, Saraf S, Titiyal JS. Yttrium Aluminum Garnet posterior capsulotomy on intraocular pressure with applanation tonometry and rebound tonometry. Journal of Current Ophthalmology. 2021;33(3):302-307.
  2. Li J, Zheng J, Zhang S, Huang Z, He M. The Effect of Capsulotomy Shape on Intraocular Light Scattering After Yttrium-Aluminum-Garnet Laser Capsulotomy: A Randomized Controlled Trial. American Journal of Ophthalmology. 2020;213:65-74.
  3. Delaney YM, Oyinloye A, Benjamin L. Nd:YAG vitreolysis and pars plana vitrectomy: surgical treatment for vitreous floaters. Eye (London). 2002;16(1):21-26.

Related Topics

Return to Knowledge Base

About Blue Fin Vision®

Blue Fin Vision® is a GMC-registered, consultant-led ophthalmology clinic with CQC-regulated facilities across London, Hertfordshire, and Essex. Patient outcomes are independently audited by the National Ophthalmology Database, confirming exceptionally low complication rates.