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Photocoagulation Through the Goldmann Contact Glass: III. Clinical Experience With an Apparatus Using a Quasi-Continuous Laser Source

Photocoagulation Through the Goldmann Contact Glass: III. Clinical Experience With an Apparatus... Abstract A new laser of high pulse repetition rate, typically 50 to 100 Hertz, for retinal photocoagulation offers significant advantages over conventional continuous or single-pulse light sources. High collimation permits one to generate very small burns. Optical aberrations of the eye media are neutralized for the most part by the application of Goldmann's mirror contact glass. In combination with a specially designed optical aiming and viewing system of high image quality, it is therefore possible to treat microlesions in the most peripheral parts of the retina with high accuracy and at low pulse energies. A foot pedal allows a very fine and continuous control of the laser output. A second observer is able to follow operations through a two-way eyepiece. The role of astigmatism caused by tilting the contact glass is discussed. References 1. Fankhauser, F., and Lotmar, W.: Photocoagulation Through the Goldmann Contact Glass , Arch Ophthal 77:320-330 ( (March) ) 1967.Crossref 2. Fankhauser, F., and Lotmar W.: Methods of Photocoagulation Through the Goldmann Contact Glass , Mod Probl Ophthal 7:256-272, 1968. 3. Röss, D.: Exfocal Pumping of Optical Masers in Elliptical Mirrors , Appl Optics 3:259-265, 1964.Crossref 4. Röss, D., and Zeidler, G.: Pumping New Life Into Ruby Lasers , Electronics 39:115-118 ( (Sept 5) ) 1966. 5. Röss, D.: Ueber kontinuierlich und quasikontinuierlich arbeitende Festkörperlaser , Siemens Z 41:3-11, 1967. 6. Kohtiao, A., et al: Temperature Rise and Photocoagulation of Rabbit Retinas Exposed to the CW Laser , Amer J Ophthal 62:524-528, 1966. 7. Blabla, J., and John J.: The Saturation Effect in Retina Measured by Means of He-Ne Laser , Amer J Ophthal 62:659-663, 1966. 8. Mayer, H.L., and Richey, F.: Eyeburn-Damage Calculation for an Exoatmospheric Nuclear Event , Opt Soc Amer 54:678-683, 1964.Crossref 9. Sundblad, L., and Balazs, E.A.: " Chemical and Physical Changes of Glycosaminoglycans and Glycoproteins Caused by Oxidation-Reduction Systems and Radiation ," in Balazs, E.A., and Jeanloz, R.W. (eds.): The Amino Sugars , New York: Academic Press, Inc., 1966, vol 11B, chap 47. 10. Brinkman, R., and Lambert, H.B.: in Ebert, M., and Howard, A. (eds.): Current Topics in Radiation Research , Amsterdam: North-Holland Publishing Co., 1966, vol 2, p 279. 11. Gustavson, K.H.: The Chemistry and Reactivity of Collagen , New York: Academic Press, Inc., 1956. 12. Ham, W.T., Jr., et al: Optical Masers (Lasers) , Acta Ophthal 76:( (suppl) ):60-78, 1963. 13. Ham, W.T., Jr., et al: Ocular Effects of Laser Radiation, Contract DA 49 193 MD 2241, US Army Med Res Dev Command, 1965. 14. Geeraets, W.J., et al: Laser Versus Light Coagulator: A Fundoscopic and Histologic Study of Chorioretinal Injury as a Function of Exposure Time , Fed Proc 24( (suppl 14) ):48-61, 1965. 15. Kohtiao, A., et al: Threshold Lesions in Rabbit Retinas Exposed to Pulsed Ruby Laser Radiation , Amer J Ophthal 62:664-669, 1966. 16. Boyd, G.D., and Kogelnik, H.: Generalized Confocal Resonator Theory , Bell Syst Tech J 41:1347-1369, 1962.Crossref 17. Kapany, N.S.; Silbertrust, N.; and Peppers, N.A.: Laser Retinal Photocoagulator , Appl Opt 4:517-522, 1965.Crossref 18. Campbell, C.J., et al: Clinical Studies in Laser Photocoagulation , Arch Ophthal 74:57-65 ( (July) ) 1965.Crossref 19. Freeman, H.M.; Pomerantzeff, O.; and Schepens, C.L.: An Evaluation of the Ruby Laser as a Retinal Coagulating Source , Ann NY Acad Sci 122:783-789, 1965.Crossref 20. Ingram, H.V.; Manson, N.; and Smart, D.: A Laser Ophthalmoscope for Retinal Phototherapy , Brit Med J 1:823-827 ( (March 27) ) 1965.Crossref 21. Röss, D., and Zeidler, G.: Untersuchung der Emission eines 50 Hz-Rubin-Pulslasers , Z Naturforsch 22a:1398-1401, 1967. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Ophthalmology American Medical Association

Photocoagulation Through the Goldmann Contact Glass: III. Clinical Experience With an Apparatus Using a Quasi-Continuous Laser Source

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Publisher
American Medical Association
Copyright
Copyright © 1968 American Medical Association. All Rights Reserved.
ISSN
0003-9950
eISSN
1538-3687
DOI
10.1001/archopht.1968.03850040676005
Publisher site
See Article on Publisher Site

Abstract

Abstract A new laser of high pulse repetition rate, typically 50 to 100 Hertz, for retinal photocoagulation offers significant advantages over conventional continuous or single-pulse light sources. High collimation permits one to generate very small burns. Optical aberrations of the eye media are neutralized for the most part by the application of Goldmann's mirror contact glass. In combination with a specially designed optical aiming and viewing system of high image quality, it is therefore possible to treat microlesions in the most peripheral parts of the retina with high accuracy and at low pulse energies. A foot pedal allows a very fine and continuous control of the laser output. A second observer is able to follow operations through a two-way eyepiece. The role of astigmatism caused by tilting the contact glass is discussed. References 1. Fankhauser, F., and Lotmar, W.: Photocoagulation Through the Goldmann Contact Glass , Arch Ophthal 77:320-330 ( (March) ) 1967.Crossref 2. Fankhauser, F., and Lotmar W.: Methods of Photocoagulation Through the Goldmann Contact Glass , Mod Probl Ophthal 7:256-272, 1968. 3. Röss, D.: Exfocal Pumping of Optical Masers in Elliptical Mirrors , Appl Optics 3:259-265, 1964.Crossref 4. Röss, D., and Zeidler, G.: Pumping New Life Into Ruby Lasers , Electronics 39:115-118 ( (Sept 5) ) 1966. 5. Röss, D.: Ueber kontinuierlich und quasikontinuierlich arbeitende Festkörperlaser , Siemens Z 41:3-11, 1967. 6. Kohtiao, A., et al: Temperature Rise and Photocoagulation of Rabbit Retinas Exposed to the CW Laser , Amer J Ophthal 62:524-528, 1966. 7. Blabla, J., and John J.: The Saturation Effect in Retina Measured by Means of He-Ne Laser , Amer J Ophthal 62:659-663, 1966. 8. Mayer, H.L., and Richey, F.: Eyeburn-Damage Calculation for an Exoatmospheric Nuclear Event , Opt Soc Amer 54:678-683, 1964.Crossref 9. Sundblad, L., and Balazs, E.A.: " Chemical and Physical Changes of Glycosaminoglycans and Glycoproteins Caused by Oxidation-Reduction Systems and Radiation ," in Balazs, E.A., and Jeanloz, R.W. (eds.): The Amino Sugars , New York: Academic Press, Inc., 1966, vol 11B, chap 47. 10. Brinkman, R., and Lambert, H.B.: in Ebert, M., and Howard, A. (eds.): Current Topics in Radiation Research , Amsterdam: North-Holland Publishing Co., 1966, vol 2, p 279. 11. Gustavson, K.H.: The Chemistry and Reactivity of Collagen , New York: Academic Press, Inc., 1956. 12. Ham, W.T., Jr., et al: Optical Masers (Lasers) , Acta Ophthal 76:( (suppl) ):60-78, 1963. 13. Ham, W.T., Jr., et al: Ocular Effects of Laser Radiation, Contract DA 49 193 MD 2241, US Army Med Res Dev Command, 1965. 14. Geeraets, W.J., et al: Laser Versus Light Coagulator: A Fundoscopic and Histologic Study of Chorioretinal Injury as a Function of Exposure Time , Fed Proc 24( (suppl 14) ):48-61, 1965. 15. Kohtiao, A., et al: Threshold Lesions in Rabbit Retinas Exposed to Pulsed Ruby Laser Radiation , Amer J Ophthal 62:664-669, 1966. 16. Boyd, G.D., and Kogelnik, H.: Generalized Confocal Resonator Theory , Bell Syst Tech J 41:1347-1369, 1962.Crossref 17. Kapany, N.S.; Silbertrust, N.; and Peppers, N.A.: Laser Retinal Photocoagulator , Appl Opt 4:517-522, 1965.Crossref 18. Campbell, C.J., et al: Clinical Studies in Laser Photocoagulation , Arch Ophthal 74:57-65 ( (July) ) 1965.Crossref 19. Freeman, H.M.; Pomerantzeff, O.; and Schepens, C.L.: An Evaluation of the Ruby Laser as a Retinal Coagulating Source , Ann NY Acad Sci 122:783-789, 1965.Crossref 20. Ingram, H.V.; Manson, N.; and Smart, D.: A Laser Ophthalmoscope for Retinal Phototherapy , Brit Med J 1:823-827 ( (March 27) ) 1965.Crossref 21. Röss, D., and Zeidler, G.: Untersuchung der Emission eines 50 Hz-Rubin-Pulslasers , Z Naturforsch 22a:1398-1401, 1967.

Journal

Archives of OphthalmologyAmerican Medical Association

Published: Jun 1, 1968

References