Diode Laser Compared With Argon Laser for Trabeculoplasty

Brancato, Rosario; Carassa, Roberto; Trabucchi, Giuseppe

doi:10.1016/s0002-9394(14)76212-9

Cited by 42 publications

(20 citation statements)

References 26 publications

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“…However, the parameter selections have been chosen mainly on a trial and error basis, without investigating the optical properties of the TM and attempting to predict optimal treatment parameters. Most of these studies showed success comparable to that of conventional argon laser trabeculoplasty [1,4,9]. After comparing the results of this study with quantified TM effects produced by lasers with carefully chosen parameters, efforts to optimize LT parameters may be more successful.…”

Section: Discussionmentioning

confidence: 87%

“…Since the near-infrared light is typically less absorbed by pigmented tissue than visible wavelengths, the power settings for the diode laser must be higher than the argon laser settings to produce the desired blanching, given the clinical laser parameters in use. The typical power settings for the argon laser are from 500-1,200 mW with an average of approximately 800 mW, with a spot size of 50 mm and a 0.1-sec duration [3][4][5][6][7]. It is the practice of some surgeons to use a single fixed power setting on every patient, regardless of the blanching [2].…”

Section: Introductionmentioning

confidence: 99%

“…It is the practice of some surgeons to use a single fixed power setting on every patient, regardless of the blanching [2]. In contrast, the typical diode laser power settings are 700-1,500 mW with an approximate average of 1,100 mW, a spot size of 100 m, and a 0.2-sec duration [1,4,5,[8][9][10]. Argon laser trabeculoplasty, as a means of controlling intraocular pressure (IOP), has an approximate 50% failure within 5 years [11][12][13][14][15][16][17] and as high as 50% failure in 2 years [3].…”

Section: Introductionmentioning

confidence: 99%

“…Diode LT has similar clinical results, but there have been few long-term studies. Studies include 2-year follow-ups [1,4,9] and a 5-year follow-up [18]. The similar clinical results, despite the differences in treatment parameters, raise questions as to the mechanism of action.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Optical properties of human trabecular meshwork in the visible and near-infrared region

et al. 1999

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Section: Discussionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optical properties of human trabecular meshwork in the visible and near-infrared region

et al. 1999

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“…The efficacy of ALT has been well proven [4][5][6][7][8] but there are very few studies showing the efficacy of DLT and YLT. [9][10][11][12][13] To our knowledge, there are no studies comparing the efficacy of DLT to YLT.…”

mentioning

confidence: 99%

Comparative evaluation of diode laser trabeculoplasty vs frequency doubled Nd : YAG laser trabeculoplasty in primary open angle glaucoma

Agarwal

Poovali

Sihota

et al. 2005

Eye

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Aims To evaluate the efficacy of diode laser trabeculoplasty (DLT) and frequency doubled Nd : YAG laser trabeculoplasty (YLT) in primary open angle glaucoma (POAG). Methods A total of 52 eyes of 35 patients with POAG were included. In all, 25 eyes underwent DLT (Group I) and 27 eyes underwent YLT (Group II). IOP, gonioscopy and visual fields were evaluated before and 3, 6, and 9 months and 1 year after the laser. An IOPo21 mmHg without medications or a decrease in the number of glaucoma medications with no progression of disc and field changes was considered a success. Results The mean age of patients in Group I was 57.7278.1 years and the patients in Group II had a mean age of 59.8577.76 years. The mean prelaser IOP was 24.9371.49 mmHg and 25.3671.57 mmHg. The mean IOP after DLT at 12 months follow-up was 18.070.93 mmHg and after YLT was 18.671.52 mmHg. The reduction of IOP was statistically significant in both the groups at 3, 6, 9, and 12 months (Po0.001), however there was no significant difference between the two groups. Success rates in both groups were similar, 92% in Group I and 92.6% in Group II. Conclusions DLT and Fd YLT are equally effective in controlling IOP in eyes with POAG.

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Laser trabeculoplasty for open angle glaucoma

Rolim-de-Moura

Paranhos

Wormald

2007

Cochrane Database of Systematic Reviews

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Evidence suggests that, in people with newly diagnosed OAG, the risk of uncontrolled IOP is higher in people treated with medication used before the 1990s when compared to laser trabeculoplasty at two years follow up. Trabeculoplasty is less effective than trabeculectomy in controlling IOP at six months and two years follow up. Different laser technology and protocol modalities were compared to the traditional laser trabeculoplasty and more evidence is necessary to determine if they are equivalent or not. There is no evidence to determine the effectiveness of laser trabeculoplasty compared to contemporary medication (prostaglandin analogues, topical anhydrase inhibitors and alpha2-agonists) and also with contemporary surgical techniques. Also there should be further investigation in to the effectiveness of laser trabeculoplasty in specific racial groups, specific diagnostic groups, such as pseudoexfoliation and pigmentary glaucoma and different stages of OAG. More research is also required determining cost-effectiveness of laser trabeculoplasty in the management of glaucoma.

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Diode Laser Compared With Argon Laser for Trabeculoplasty

Cited by 42 publications

References 26 publications

Optical properties of human trabecular meshwork in the visible and near-infrared region

Optical properties of human trabecular meshwork in the visible and near-infrared region

Comparative evaluation of diode laser trabeculoplasty vs frequency doubled Nd : YAG laser trabeculoplasty in primary open angle glaucoma

Laser trabeculoplasty for open angle glaucoma

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