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Krypton and argon laser photocoagulation effects in subretinal hemorrhage
Japanese Journal of Ophthalmology
|January 1, 1986
Summary
Krypton laser photocoagulation is more effective than argon laser for treating macular diseases with subretinal hemorrhage. The krypton laser penetrates hemorrhages, allowing effective treatment of underlying retinal and choroidal tissues.
Area of Science:
- Ophthalmology
- Laser Medicine
- Retinal Diseases
Background:
- Previous studies indicated krypton laser photocoagulation's superiority over argon laser for macular diseases.
- Krypton laser's poor hemoglobin absorption suggested better efficacy in subretinal hemorrhage cases.
Purpose of the Study:
- To compare the photocoagulation effects of krypton and argon lasers on hemorrhagic retinal detachment.
- To evaluate laser efficacy in the presence of subretinal hemorrhage.
Main Methods:
- Hemorrhagic retinal detachment was induced in monkey eyes using a Q-switched Nd-YAG laser.
- Photocoagulation was performed using both krypton and argon lasers four weeks post-induction.
Main Results:
- Argon laser produced heavy coagulation in the detached retina but not the choroid, despite subretinal hemorrhage.
- Krypton laser penetrated the hemorrhage, achieving coagulation in both the detached retina and choroid.
Conclusions:
- Krypton laser photocoagulation demonstrates superior efficacy for lesions located behind subretinal hemorrhages compared to argon laser.
- The findings support krypton laser as a more effective treatment option for specific macular conditions involving hemorrhage.