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The effect of the surgeon and the laser wavelength on the response to focal photocoagulation for diabetic macular edema.

Publication ,  Journal Article
Browning, DJ; Antoszyk, AN
Published in: Ophthalmology
February 1999

OBJECTIVE: To determine the effect of the surgeon and the wavelength of laser used on the response to focal photocoagulation for diabetic macular edema. DESIGN: Retrospective case-control study. PARTICIPANTS: Forty-four matched pairs of cases by two different retina surgeons in the study of surgeon influence were examined. Sixty-nine matched pairs of cases using dye yellow versus argon green laser treatment in the study of wavelength influence also were studied. In both studies, eyes were matched for the only patient-dependent variables affecting outcome: age, initial visual acuity, follow-up time, and diabetic control by diet versus any other method. INTERVENTION: Focal laser photocoagulation for clinically significant diabetic macular edema was performed. MAIN OUTCOME MEASURE: Visual acuity at 6 months follow-up was measured. RESULTS: For the study in which the only difference was the surgeon, at 6 months follow-up the mean difference in logarithm of the minimum angle of resolution (logMAR) visual acuity was -0.045, 95% confidence interval (-0.160, 0.070). For the study in which wavelength varied, at 6 months the mean difference in logMAR visual acuity was -0.048, 95% confidence interval (-0.147, 0.052). The power of the surgeon study to detect a difference in the logMAR visual acuity of 0.3 is 88% and of the wavelength study to detect this difference is 99%. CONCLUSION: In looking at the 6-month visual outcome after focal laser photocoagulation for clinically significant diabetic macular edema, different fellowship trained surgeons and the choice of green or yellow wavelength had no effect on the treatment outcome.

Duke Scholars

Published In

Ophthalmology

DOI

ISSN

0161-6420

Publication Date

February 1999

Volume

106

Issue

2

Start / End Page

243 / 248

Location

United States

Related Subject Headings

  • Visual Acuity
  • Treatment Outcome
  • Retrospective Studies
  • Retinal Diseases
  • Ophthalmology & Optometry
  • Ophthalmology
  • Middle Aged
  • Macula Lutea
  • Laser Coagulation
  • Humans
 

Citation

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Browning, D. J., & Antoszyk, A. N. (1999). The effect of the surgeon and the laser wavelength on the response to focal photocoagulation for diabetic macular edema. Ophthalmology, 106(2), 243–248. https://doi.org/10.1016/S0161-6420(99)90063-5
Browning, D. J., and A. N. Antoszyk. “The effect of the surgeon and the laser wavelength on the response to focal photocoagulation for diabetic macular edema.Ophthalmology 106, no. 2 (February 1999): 243–48. https://doi.org/10.1016/S0161-6420(99)90063-5.
Browning, D. J., and A. N. Antoszyk. “The effect of the surgeon and the laser wavelength on the response to focal photocoagulation for diabetic macular edema.Ophthalmology, vol. 106, no. 2, Feb. 1999, pp. 243–48. Pubmed, doi:10.1016/S0161-6420(99)90063-5.
Journal cover image

Published In

Ophthalmology

DOI

ISSN

0161-6420

Publication Date

February 1999

Volume

106

Issue

2

Start / End Page

243 / 248

Location

United States

Related Subject Headings

  • Visual Acuity
  • Treatment Outcome
  • Retrospective Studies
  • Retinal Diseases
  • Ophthalmology & Optometry
  • Ophthalmology
  • Middle Aged
  • Macula Lutea
  • Laser Coagulation
  • Humans