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Contact transscleral continuous wave neodymium:YAG laser cyclophotocoagulation
J S Schuman1, C A Puliafito, R R Allingham
1Morse Laser Center, Massachusetts Eye and Ear Infirmary, Boston.
Ophthalmology
|May 1, 1990
Summary
Contact transscleral continuous wave neodymium:YAG (Nd:YAG) laser cyclophotocoagulation (CYC) effectively lowered intraocular pressure (IOP) in advanced glaucoma patients. This advanced glaucoma treatment offers significant IOP reduction with minimal complications.
Area of Science:
- Ophthalmology
- Medical Laser Applications
- Glaucoma Research
Background:
- Advanced glaucoma poses a significant challenge to vision preservation.
- Current treatments may have limitations in efficacy or side effect profiles.
Purpose of the Study:
- To evaluate the efficacy and safety of contact transscleral continuous wave neodymium:YAG (Nd:YAG) laser cyclophotocoagulation (CYC) for advanced glaucoma.
Main Methods:
- Prospective study of 140 eyes with advanced glaucoma treated with Nd:YAG laser CYC.
- Specific parameters included probe placement, power (7-9 W), duration (0.7s), and applications (32-40), sparing meridians.
- Intraocular pressure (IOP) was monitored pre- and post-treatment with a mean follow-up of 3.2 months.
Main Results:
- Mean preoperative IOP of 36.7 mmHg decreased to 21.2 mmHg post-treatment (39% reduction).
- 71% of eyes achieved IOP ≤25 mmHg, 62% ≤22 mmHg, and 49% ≤19 mmHg at 6 months.
- Complications were minimal, with no significant change in visual acuity; 11% required retreatment.
Conclusions:
- Nd:YAG laser CYC is an effective and safe therapeutic option for advanced glaucoma.
- The procedure demonstrates significant and sustained IOP reduction.
- Early results suggest this therapy is a promising advancement in glaucoma management.