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[Morphometric features in the lamina cribrosa observed by a scanning laser ophthalmoscope]
H Maeda1, M Nakamura, M Yamamoto
1Department of Ophthalmology, Kobe University School of Medicine, Japan.
Purpose:
We describe a method for the morphometric analysis of the pores in the lamina cribrosa using a confocal scanning laser ophthalmoscope (SLO: Rodenstock company, Germany).
Methods:
Four eyes with glaucoma and four eyes with non-glaucoma patients were examined. Sixteen consecutive images were acquired from the surface of the retina to the bottom of the optic disc excavation with +0.25 diopter increments by a He-Ne laser (633 nm) under 20 degree field of view. The images from each section were processed and combined with the aid of Macintosh software.
Results:
Eyes with physiological cupping showed uniformly round or elliptical pores, whereas compressed and elongated pores were frequently encountered in eyes with primary open angle glaucoma (POAG).
Conclusion:
The technique described allows, in vivo morphometry of the surface of the internal lamina cribrosa and was considered to be useful to evaluate glaucomatous progression.