Skip to main content
main-content

29.07.2016 | Retinal Disorders | Ausgabe 2/2017

Graefe's Archive for Clinical and Experimental Ophthalmology 2/2017

Association between axial length and horizontal and vertical globe diameters

Zeitschrift:
Graefe's Archive for Clinical and Experimental Ophthalmology > Ausgabe 2/2017
Autoren:
Jost B. Jonas, Kyoko Ohno-Matsui, Leonard Holbach, Songhomitra Panda-Jonas

Abstract

Purpose

To assess relationships between axial length and the horizontal and vertical globe diameters.

Material and methods

The study consisted of enucleated human eyes. The horizontal, vertical, and sagittal diameters were measured.

Results

The study included 135 globes removed because of malignant uveal melanoma (111 globes) or end-stage painful glaucoma (n = 24 eyes). Mean axial, horizontal, and vertical diameters were 24.6 ± 2.6 mm (range: 20–35 mm), 23.7 ± 1.4 mm (range: 21–29 mm) and 23.7 ± 1.4 mm (range: 20–29 mm) respectively. The horizontal diameter and vertical diameter did not differ significantly (P = 0.92), while both were significantly (P < 0.001) shorter than the axial diameter. The horizontal diameter was significantly and linearly correlated with the vertical globe diameter (P < 0.001; regression line: vertical globe diameter = 0.84 × horizontal globe diameter + 3.69). The axial diameter was significantly (P < 0.001) associated with the horizontal diameter and vertical diameters in a bipartite manner. In eyes with an axial length ≤24 mm, horizontal and vertical diameters increased by 0.44 and 0.51 mm, respectively, for each mm increase in axial diameter, while in eyes with an axial length >24 mm, the horizontal and vertical globe diameter increased by a lower amount of 0.19 and 0.21 mm, respectively, for each mm increase in axial diameter.

Conclusions

Myopic enlargement of the globe beyond an axial length of 24 mm takes place predominantly in the sagittal axis, leading to a change in the globe form from a sphere to an elongated form. It fits with the notion that myopic elongation may occur by an elongation of the eye walls in regions close to the globe’s equator.

Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten

★ PREMIUM-INHALT
e.Med Interdisziplinär

Mit e.Med Interdisziplinär erhalten Sie Zugang zu allen CME-Fortbildungen und Fachzeitschriften auf SpringerMedizin.de. Zusätzlich können Sie eine Zeitschrift Ihrer Wahl in gedruckter Form beziehen – ohne Aufpreis.

Literatur
Über diesen Artikel

Weitere Artikel der Ausgabe 2/2017

Graefe's Archive for Clinical and Experimental Ophthalmology 2/2017 Zur Ausgabe

Neu im Fachgebiet Augenheilkunde