Titre du document / Document title

Comparison between tomographic scanning evaluation and photographic measurement of the neuroretinal rim

Auteur(s) / Author(s)

DICHTL A. ⁽¹⁾ ; JONAS J. B. ⁽¹⁾ ; MARDIN C. Y. ⁽¹⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Department of Ophthalmology and Eye Hospital, University Erlangen-Nürnberg, ALLEMAGNE

Résumé / Abstract

. PURPOSE : To compare laser tomographic scanning evaluation with photographic measurement of size and shape of the neuroretinal rim. . METHODS : For 25 normal eyes and 32 glaucomatous eyes, the optic disks were examined with the Heidelberg Retina Tomograph (software version 1.11) for confocal laser tomographic scanning evaluation, and color stereoscopic optic disk photographs for planimetric measurements. Area and width of the neuroretinal rim were determined as percentages of the disk area and diameter, respectively. . RESULTS : For the normal and glaucomatous eyes, the tomographic results compared with the photographic measurements disclosed significantly larger values for the relative width and relative area of the neuroretinal rim. The differences between both methods were most marked in the nasal part of the optic disk and least marked in the temporal disk region. The relative differences increased significantly (P <.05) with increasing degree of glaucomatous optic nerve damage. . CONCLUSIONS : In normal and glaucomatous eyes, the Heidelberg Retina Tomograph determines the neuroretinal rim, expressed as percentage of optic disk measurements, to be significantly larger than when the rim is evaluated on optic disk photographs. Because parts of the central retinal vessel trunk are defined as neuroretinal rim in the algorithm of the Heidelberg Retina Tomograph, the differences between Heidelberg Retina Tomograph measurements and photographic determinations of the rim are largest in the nasal disk region and smallest in the temporal disk area. The neuroretinal rim shape and neuroretinal rim area differ appreciably between the two methods. These differences increase with increasing degree of glaucomatous optic nerve damage.

Revue / Journal Title

American journal of ophthalmology   ISSN 0002-9394   CODEN AJOPAA 

Source / Source

1996, vol. 121, n^o5, pp. 494-501 (28 ref.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, New York, NY, ETATS-UNIS  (1884) (Revue)

Mots-clés anglais / English Keywords

Tomography ; Laser ; Retina ; Thickness ; Size ; Glaucoma (eye) ; Photography ; Measurement method ; Comparative study ; Human ; Neuroretinal rim ; Radiodiagnosis ; Eye disease ;

Mots-clés français / French Keywords

Tomographie ; Laser ; Rétine ; Epaisseur ; Taille ; Glaucome ; Photographie ; Méthode mesure ; Etude comparative ; Homme ; Anneau neurorétinien ; Radiodiagnostic ; Oeil pathologie ;

Mots-clés espagnols / Spanish Keywords

Tomografía ; Laser ; Retina ; Espesor ; Talla ; Glaucoma (ojo) ; Fotografía ; Método medida ; Estudio comparativo ; Hombre ; Radiodiagnóstico ; Ojo patología ;

Localisation / Location

INIST-CNRS, Cote INIST : 2012, 35400004327608.0030