Clinical investigation of a true color scanning laser ophthalmoscope

Ayyakkannu Manivannan, J. Van der Hoek, P. Vieira, Alison Farrow, Jim Olson, Peter Frederick Sharp, John Vincent Forrester

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Objective: To show true color scanning laser ophthal-moscope (SLO) images produced by simultaneously imaging the retina with red, green, and blue lasers.

Methods: Low-power red, green, and blue lasers were combined using fiber optics. By rapidly pulsing the lasers, each point on the fundus is illuminated by the 3 colors in quick succession, with the total power level being similar to that from a single laser. The reflected light is then decoded to extract the red, green, and blue color information and the true color fundus image is displayed live on a computer monitor.

Results: Comparison was made between the color SLO images from 5 patients and their digitized fundus photographs. The background fundus and retinal vasculature showed a similar appearance. The SLO gave better quality information in patients with ocular histoplasmosis, macular dystrophy, and optic disc drusen. By operating the color SLO in the indirect mode, macular edema could be dearly seen as lines and ridges surrounding the fovea.

Conclusion: The color SLO offers all the advantages of the present commercially available monochromatic device, with the added advantage of true color representation of the fundus without increasing either imaging time or the level of exposure.

Original languageEnglish
Pages (from-to)819-824
Number of pages5
JournalArchives of Ophthalmology
Volume119
Issue number6
Publication statusPublished - Jun 2001

Keywords

  • OPTIC-NERVE HEAD
  • MACULAR EDEMA
  • TOMOGRAPHY
  • SYSTEM
  • DRUSEN
  • FUNDUS

Cite this

Manivannan, A., Van der Hoek, J., Vieira, P., Farrow, A., Olson, J., Sharp, P. F., & Forrester, J. V. (2001). Clinical investigation of a true color scanning laser ophthalmoscope. Archives of Ophthalmology, 119(6), 819-824.

Clinical investigation of a true color scanning laser ophthalmoscope. / Manivannan, Ayyakkannu; Van der Hoek, J.; Vieira, P.; Farrow, Alison; Olson, Jim; Sharp, Peter Frederick; Forrester, John Vincent.

In: Archives of Ophthalmology, Vol. 119, No. 6, 06.2001, p. 819-824.

Research output: Contribution to journalArticle

Manivannan, A, Van der Hoek, J, Vieira, P, Farrow, A, Olson, J, Sharp, PF & Forrester, JV 2001, 'Clinical investigation of a true color scanning laser ophthalmoscope', Archives of Ophthalmology, vol. 119, no. 6, pp. 819-824.
Manivannan A, Van der Hoek J, Vieira P, Farrow A, Olson J, Sharp PF et al. Clinical investigation of a true color scanning laser ophthalmoscope. Archives of Ophthalmology. 2001 Jun;119(6):819-824.
Manivannan, Ayyakkannu ; Van der Hoek, J. ; Vieira, P. ; Farrow, Alison ; Olson, Jim ; Sharp, Peter Frederick ; Forrester, John Vincent. / Clinical investigation of a true color scanning laser ophthalmoscope. In: Archives of Ophthalmology. 2001 ; Vol. 119, No. 6. pp. 819-824.
@article{65f9556f33d74f9c81a3108a7575488f,
title = "Clinical investigation of a true color scanning laser ophthalmoscope",
abstract = "Objective: To show true color scanning laser ophthal-moscope (SLO) images produced by simultaneously imaging the retina with red, green, and blue lasers.Methods: Low-power red, green, and blue lasers were combined using fiber optics. By rapidly pulsing the lasers, each point on the fundus is illuminated by the 3 colors in quick succession, with the total power level being similar to that from a single laser. The reflected light is then decoded to extract the red, green, and blue color information and the true color fundus image is displayed live on a computer monitor.Results: Comparison was made between the color SLO images from 5 patients and their digitized fundus photographs. The background fundus and retinal vasculature showed a similar appearance. The SLO gave better quality information in patients with ocular histoplasmosis, macular dystrophy, and optic disc drusen. By operating the color SLO in the indirect mode, macular edema could be dearly seen as lines and ridges surrounding the fovea.Conclusion: The color SLO offers all the advantages of the present commercially available monochromatic device, with the added advantage of true color representation of the fundus without increasing either imaging time or the level of exposure.",
keywords = "OPTIC-NERVE HEAD, MACULAR EDEMA, TOMOGRAPHY, SYSTEM, DRUSEN, FUNDUS",
author = "Ayyakkannu Manivannan and {Van der Hoek}, J. and P. Vieira and Alison Farrow and Jim Olson and Sharp, {Peter Frederick} and Forrester, {John Vincent}",
year = "2001",
month = "6",
language = "English",
volume = "119",
pages = "819--824",
journal = "Archives of Ophthalmology",
issn = "0003-9950",
publisher = "American Medical Association",
number = "6",

}

TY - JOUR

T1 - Clinical investigation of a true color scanning laser ophthalmoscope

AU - Manivannan, Ayyakkannu

AU - Van der Hoek, J.

AU - Vieira, P.

AU - Farrow, Alison

AU - Olson, Jim

AU - Sharp, Peter Frederick

AU - Forrester, John Vincent

PY - 2001/6

Y1 - 2001/6

N2 - Objective: To show true color scanning laser ophthal-moscope (SLO) images produced by simultaneously imaging the retina with red, green, and blue lasers.Methods: Low-power red, green, and blue lasers were combined using fiber optics. By rapidly pulsing the lasers, each point on the fundus is illuminated by the 3 colors in quick succession, with the total power level being similar to that from a single laser. The reflected light is then decoded to extract the red, green, and blue color information and the true color fundus image is displayed live on a computer monitor.Results: Comparison was made between the color SLO images from 5 patients and their digitized fundus photographs. The background fundus and retinal vasculature showed a similar appearance. The SLO gave better quality information in patients with ocular histoplasmosis, macular dystrophy, and optic disc drusen. By operating the color SLO in the indirect mode, macular edema could be dearly seen as lines and ridges surrounding the fovea.Conclusion: The color SLO offers all the advantages of the present commercially available monochromatic device, with the added advantage of true color representation of the fundus without increasing either imaging time or the level of exposure.

AB - Objective: To show true color scanning laser ophthal-moscope (SLO) images produced by simultaneously imaging the retina with red, green, and blue lasers.Methods: Low-power red, green, and blue lasers were combined using fiber optics. By rapidly pulsing the lasers, each point on the fundus is illuminated by the 3 colors in quick succession, with the total power level being similar to that from a single laser. The reflected light is then decoded to extract the red, green, and blue color information and the true color fundus image is displayed live on a computer monitor.Results: Comparison was made between the color SLO images from 5 patients and their digitized fundus photographs. The background fundus and retinal vasculature showed a similar appearance. The SLO gave better quality information in patients with ocular histoplasmosis, macular dystrophy, and optic disc drusen. By operating the color SLO in the indirect mode, macular edema could be dearly seen as lines and ridges surrounding the fovea.Conclusion: The color SLO offers all the advantages of the present commercially available monochromatic device, with the added advantage of true color representation of the fundus without increasing either imaging time or the level of exposure.

KW - OPTIC-NERVE HEAD

KW - MACULAR EDEMA

KW - TOMOGRAPHY

KW - SYSTEM

KW - DRUSEN

KW - FUNDUS

M3 - Article

VL - 119

SP - 819

EP - 824

JO - Archives of Ophthalmology

JF - Archives of Ophthalmology

SN - 0003-9950

IS - 6

ER -