Correlation between corneal thickness and optic disc morphology in normal tension glaucoma using modern technical analysis

Vol. 55 No. 3 Suppl., 2014
This supplement was not sponsored by Outside Organizations.


Laurentiu Coman, Monica Costescu, Mihail Alecu, Oana Andreia Coman

The purpose of this study was to evaluate the relationship between central corneal thickness (CCT) and optic disc morphology in normal tension glaucoma (NTG). Patients with NTG underwent eye examination, optic disc imaging with Heildelberg Retina Tomograph II (HRT II) and ultrasound corneal pachymetry. The morphological parameters of the optic discs were used to classify the eyes into four groups: generalized enlargement (GE) type, myopic glaucomatous (MY) type, focal ischemic (FI) type and senile sclerotic (SS) type. A correlation between CCT and optic disc morphology obtained by HRT II was calculated. Multiple comparison and post hoc tests were performed in order to determine the significance of the differences between the four groups. The strongest correlation was between CCT and the parameters of optic disc imaging obtained at HRT II in the GE type of optic disc.

Corresponding author: Laurentiu Coman, MD, PhD; e-mail:

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Konstantinos Natsis, George Paraskevas, Eleni Panagouli, Athanasios Tsaraklis, Evangelos Lolis, Maria Piagkou, Dionysios Venieratos

The aim of the study was to determine the distribution patterns of multiple renal arteries, evaluate how they are affected by gender and bilateral asymmetry and proceed on a systematic review. Two hundred and six kidneys from 103 Greek cadavers (53 males and 50 females) were investigated. The number and pattern of multiple renal arteries were determined according to side, gender and level of origin. The distances between the main renal and first multiple renal arteries were also measured. Multiple renal arteries were present in 11.2% of the kidneys. No statistically significant difference was found between side and gender (p>0.05). The incidence of multiple renal arteries was 87% unilaterally and 13% bilaterally. As regards the multiple renal arteries, a single artery was detected in 83%, two in 13% and three in 4.3%. In 30.4% (7/23) of the kidneys, there was a short common trunk (<1.5 cm), early dividing into the main renal artery and a thinner artery. Multiple renal arteries on the left side seemed to emerge lower than the right ones and displayed a greater variability at their origin. In the systematic review, we detected the patterns of multiple renal arteries which were classified according to population, gender, side and specimen (cadaveric, radiological or transplant). The awareness of morphology and topography of the multiple renal arteries is important in order to achieve a safe pre and intraoperative management of the renal vascular supply.

Corresponding author: George Paraskevas, Assistant Professor, MD, PhD; e-mail:

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