Journals / MN Oftalmoloji / 2000 / Cilt: 7 - Sayı: 3

Experimental use of diode laser in contact transscleral cyclophotocoagulation in rabbits: An ultrastructural study

Transskleral diode laser siklofotokoagülasyonun tavşanlarda deneysel kullanımı: Ultrastrüktürel çalışma

Pages
259–262
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

CONCLUSION: Transmission and absorption features of diode laser radiation make this new laser source suitable for production of transscleral thermal lesions.

📌 3 Key Takeaways

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Objective & Hypothesis:PURPOSE: To investigate acute and long-term effects of contact transscleral semiconductor diode laser cyclophotocoagulation in ultrastructural level in rabbits.
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Key Findings & Data:METHODS: Two groups, each containing 4 rabbits, were applied transscieral cyclophotocoagulation using 1.8 and 2.7 joule energy, respectively.
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Conclusion & Impact:CONCLUSION: Transmission and absorption features of diode laser radiation make this new laser source suitable for production of transscleral thermal lesions.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Atrofi · Epitel hücreleri · Fibroz

Abstract

PURPOSE: To investigate acute and long-term effects of contact transscleral semiconductor diode laser cyclophotocoagulation in ultrastructural level in rabbits. METHODS: Two groups, each containing 4 rabbits, were applied transscieral cyclophotocoagulation using 1.8 and 2.7 joule energy, respectively. RESULTS: Electron microscopy revealed atrophy and fîbrosis in ciliary epithelia and stroma. epithelial cell damage and distruption of tissue integrity more apparent in high level energy group as a short term effect. In long term, atrophy in epithelia and stroma of ciliary body, shortening of epithelial cell lenght, intracellular vacuolization and mitochondrial edema was more apparent in high energy level group. CONCLUSION: Transmission and absorption features of diode laser radiation make this new laser source suitable for production of transscleral thermal lesions.

Özet

AMAÇ: Tavşanlarda transskleral diode laser siklofotokoagülasyonun kısa ve uzun dönem etkilerinin ultrastrüktürel düzeyde incelenmesi. YÖNTEM: Her birinde 4'er tavşan bulunan 2 grup oluşturularak, her gruba sırasıyla 1.8 ve 2.7 joule enerji kullanılarak transskleral siklofotokoagülasyon uygulandı. BULGULAR: Kısa dönem etki olarak, elektron mikroskobunda yüksek enerji kullanılan grupta daha belirgin olmak üzere silier cisim epitelinde ve stromasında atrofi ve fibrozis, epitel hücre harabiyeti ve doku bütünlüğünde bozulma saptandı. Uzun dönemde ise yüksek enerji kullanılan grupta daha fazla olarak silier cisim epitel ve stromasında atrofi, epitel hücre boylarında kısalma, hücre içi vakuoller ve mitokondrial ödem tespit edildi. SONUÇ: Diode laserin transmisyon ve absorbsiyon özellikleri, bu yeni laser kaynağının transskleral termal lezyonlar oluşturulmasında umut vermektedir.

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Cite This Article

KAYHAN, U., GEDAR, E., TUNA, T., ÖZ, Ö., TOTUK, Ö. M., ÖZDAL, M. P. Ç., SARGON, M. F., AKTEKİN, M., KÖKLÜ, G., FIRAT, E. (2000). Experimental use of diode laser in contact transscleral cyclophotocoagulation in rabbits: An ultrastructural study. MN Oftalmoloji, Cilt: 7 - Sayı: 3, 259–262. https://ajindex.com/articles/296444

References (16)

  1. Weekers R, Lavergne G, Watîllon M, et al. Effects of photocoagulation of ciliary body upon ocular tension. Am J Ophthalmoİ 1961; 52:156-63
  2. Fankhauser F, Van der Zypen E, Kwasniewska S, et al. Transscleral cyclophotocoagulation using a neodymium:YAG laser. Ophthalmic Surg 1986; 17:94-100
  3. Immonen IJ, Puska P, Raitta C. Transskleral contact krypton laser cyclophotocoagulation for treatment of glaucoma. Ophthalmology 1994; 101:876-82
  4. Hampton C, Shields MB, Miller KN, Blasini M. Evaluatlon of a protoeol for transscleral neodymium: YAG cyclophotocoagulation in one hundred patients. Ophthalmology 1990; 97:910-7
  5. Gross RL, Feldman RM, Spaeth GL, et al. Surgical therapy of chronic glaucoma in aphakia and pseudophakia. Ophthalmology 1988; 95:1195-201
  6. B. Simmons RB, Shields MB, Blasini M, et al. Transscleral Nd: YAG laser cyclophotocoagulation with a contact lens. Am J Ophthalmology 1991; 112: 671-7
  7. Lam S, Tessler HH, Lam BL, Wilensky JT. High incidence of sympathetic ophthalmia after contact and noncontact Nd:YAG eyelotherapy. Ophthalmology 1992; 99:1818-22
  8. Schuman JS, Bellows AR, Shingleton BJ, et al. Contact transscleral Nd:YAG laser cyclophotocoagulation. Mid-term results. Ophthalmology 1992; 99:1089-95
  9. Peyman GA, Naguib KS, Gaasterland D. Transscleral application of a semiconduetor diode laser. Lasers Surg Med 1990; 10:569-75
  10. Assia El, Hennis HL, Stewart WC. Semiconduetor diode laser photocoagulation in patients with glaucoma. Am J Ophthalmoİ 1992; 113:81-5
  11. Brancato R, Trabucchi G, Verdi M, et al. Diode and Nd:YAG laser contact transscleral cyclophotocoagulation in a human eye: 12. Gaasterland DE, Pollack İP. Initial experience wrth a new method of transscleral cyclophotocoagulation for ciliary ablation in severe glaucoma. Trans Am Ophthalmol Soc 1992; 90:225-46
  12. Simmons RB, Prum BE Jr, Shields SR, et al, Videographic and histologic comparison of Nd:YAG and diode laser cyclophotocoagulation. Am J Ophthalmol 1994; 117:337-41
  13. Smith RS, Stein MN. Ocular hazards of transscleral laser radiation, I: spectral refleetion and transmission of selera, choroid, retina. Am J Ophthalmol. 1968; 66:21-31
  14. Brancato R, Pratesi R. Applications of diode lasers in ophthalmology. Lasers and Light in Ophthalmology 1987; 1:119
  15. Okamoto S, Takahashi H, Fukado Y, and Orawa T. Laser diode application for transscleral photocoagulation. Lasers and Light in Ophthalmology 1990; 3:29
  16. Smith RS, Böyle E, Rudt LA. Cyclocryotherapy: