Uribe-Moreno J, Guerrero-Avendaño G

Language: Spanish
References: 6
Page: 231-235
PDF size: 452.16 Kb.

ABSTRACT

Introduction. Endocrine ophthalmopathy is a common manifestation of Graves’ disease, which comprises a group of disorders and is due to an increase in volume of retro-ocular tissue. It causes exophthalmos, palpebral retraction, chemosis, and alterations in extraocular muscles. It has been suggested that exophthalmos in such patients is caused by an exophthalmic molecule or factor. Today, the primary tool used to quantify ocular protrusion is exophthalmometry performed by ophthalmologists. In radiology a measurement proposed by the Spanish Medical Radiology Society is used, which consists of measuring the anterior pole of the eye on a bimalar line in millimeters. This study proposes standardizing a measurement for the Mexican population using an eye globe / intercanthal distance ratio.
Material and methods. Measurements were taken on 100 eyes in 50 patients to standardize an eye globe / intercanthal distance (EG/ICD) ratio, and also to obtain an eye globe / bimalar distance (EG/BD) ratio.
Results. EG/ICD and EG/BD quotients of 0.50 and 0.68 respectively were obtained.
Discussion. Graves’ ophthtalmopathy is the most common cause of exophthalmos in Mexico and at present there are no standardized ratios to measure orbital position of eye globes for the Mexican population or a reliable record of exophthalmos.
Conclusions. We propose that EG/ICD ratios be evaluated in computed tomography studies and that ratios above 0.50 be considered suggestive of disorder.

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