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Low-power-laser (LPL): a New Therapeutic Option in Retinopathy
1Ivandic T., 2Ivandic B. T.,
1Augenarztpraxis (München)
2Medizinische Universität zu Lübeck, Klinik für Augenheilkunde (Lübeck)
Purpose: Common application of laser light in ophthalmology results in irreversible destruction of tissue. Experiences with a non-destructive LPL treatment of age-related macular degeneration (AMD) and serous central chorioretinopathy (SCC) will be presented as an innovative therapeutic approach.
Method: LPL of 7,5 mW and 780 nm was applied for approximately 40 s transsclerally from temporal to the macular area. 183 patients with AMD (328 eyes, i.e. 146 without and 182 with cataract) were treated four times in two weeks on average. 32 patients with SCC (32 eyes) were irradiated seven times mostly every day on average. Before irradiation, visual acuity was controlled with optimal correction.
Results: In patients with AMD without cataract visual acuity improved in 77% at least 2 and at maximum 7 optotype lines of Snellen, in 20% one more line could be read, in 3% no change was observed. Among all patients with cataract 70% could achieve at least 2 and at most 8 more lines; 25% showed an improvement of vision of one line. In 5%, there was no change. In all cases of SCC full recovery of vision was gained within 10 days. A reduction of contrast sensitivity was observed in 2 patients 3 and 6 months after therapy, respectively. Only one case showed a relapse. LPL irradiation had no negative side effects.
Conclusions: Biostimulation by LPL can improve visual acuity in AMD, thus preventing further deterioration of vision, particularly in early stages of the disease. In SCC, symptoms disappear faster and long-term damages can be avoided. Treatment with LPL is simple, inexpensive and well accepted by the patients. Our promising results warrant further controlled studies to investigate the longterm efficacy and safety of this novel therapeutic approach.