Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Clinical Trial
. 1995 Jun;79(6):569-74.
doi: 10.1136/bjo.79.6.569.

Clinical comparison of semiconductor diode versus neodymium: YAG non-contact cyclo photocoagulation

M W Ulbig  1 , D A McHugh, A I McNaught, A M Hamilton
Affiliations
Clinical Trial

Clinical comparison of semiconductor diode versus neodymium: YAG non-contact cyclo photocoagulation

M W Ulbig et al. Br J Ophthalmol. 1995 Jun.

Abstract

Aims: The advent of diode lasers has allowed their use in transscleral cyclo photocoagulation for refractory glaucoma. A trial was performed to compare the ocular hypotensive and inflammatory effects of cyclo photocoagulation using a continuous wave diode (810 nm) and a free running neodymium:yttrium aluminium garnet (Nd:YAG) laser (1064 nm).

Methods: Forty patients with refractory glaucoma were randomised to receive either diode or Nd:YAG therapy. The intraocular pressure (IOP) and inflammatory response to treatment were monitored over 3 months.

Results: There was no significant laser related difference in the effect on IOP after one treatment. There was, however, a difference in effect in retreatments with the IOP lowering effect significantly less, but equally sustained in diode retreatment patients. Severe postoperative complications such as hyphaema or fibrinous anterior uveitis only occurred in the Nd:YAG group.

Conclusion: The degree and duration of the ocular hypotensive response to cyclo photocoagulation appears to be related to the available power output of the system used, and the extent of tissue damage.

PubMed Disclaimer

References

    1. Ophthalmology. 1990 Jul;97(7):910-7 - PubMed
    1. Ger J Ophthalmol. 1994 Aug;3(4-5):212-5 - PubMed
    1. Ophthalmic Surg. 1986 Feb;17(2):94-100 - PubMed
    1. Arch Ophthalmol. 1988 Aug;106(8):1121-3 - PubMed
    1. Invest Ophthalmol Vis Sci. 1990 Jun;31(6):1114-8 - PubMed

Publication types