Comparative effects of argon green and krypton red laser photocoagulation for patients with diabetic exudative maculopathy.

Khairallah, Moncef; Brahim, R. Ben; Allagui, Mohamed Bechir; Chachia, N

doi:10.1136/bjo.80.4.319

Cited by 6 publications

(1 citation statement)

References 17 publications

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“…As longer wavelengths have deeper retinal and choroidal penetration [36], one can assume that red laser causes less tissue damage than diode laser. As red laser has been demonstrated to be as effective as green laser in retinopathy management [37,38,39] and because its wavelength lies between the green and diode laser, we hypothesized that it can be a safer and at least as effective option as diode laser for the treatment of ROP. Our study supports this hypothesis by showing equal efficacy of red and diode lasers, while red laser causes less myopic shift, which seems to be attributable to less tissue damage resulting from less tissue penetrance of this laser type into the choroid and retina.…”

Section: Discussionmentioning

confidence: 99%

Comparison of Refractive Error Changes in Retinopathy of Prematurity Patients Treated with Diode and Red Lasers

Roohipoor

Karkhaneh²,

Esfahani³

et al. 2016

Ophthalmologica

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Aim: To compare refractive error changes in retinopathy of prematurity (ROP) patients treated with diode and red lasers. Methods: A randomized double-masked clinical trial was performed, and infants with threshold or prethreshold type 1 ROP were assigned to red or diode laser groups. Gestational age, birth weight, pretreatment cycloplegic refraction, time of treatment, disease stage, zone and disease severity were recorded. Patients received either red or diode laser treatment and were regularly followed up for retina assessment and refraction. The information at month 12 of corrected age was considered for comparison. Results: One hundred and fifty eyes of 75 infants were enrolled in the study. Seventy-four eyes received diode and 76 red laser therapy. The mean gestational age and birth weight of the infants were 28.6 ± 3.2 weeks and 1,441 ± 491 g, respectively. The mean baseline refractive error was +2.3 ± 1.7 dpt. Posttreatment refraction showed a significant myopic shift (mean 2.6 ± 2.0 dpt) with significant difference between the two groups (p < 0.001). There was a greater myopic shift among children with zone I and diode laser treatment (mean 6.00 dpt) and a lesser shift among children with zone II and red laser treatment (mean 1.12 dpt). The linear regression model, using the generalized estimating equation method, showed that the type of laser used has a significant effect on myopic shift even after adjustment for other variables. Conclusion: Myopic shift in laser-treated ROP patients is related to the type of laser used and the involved zone. Red laser seems to cause less myopic shift than diode laser, and those with zone I involvement have a greater myopic shift than those with ROP in zone II.

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