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Conjunctival vascular lesions. Classification and clinical significance with special reference to diabetes

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Riassunto

Viene descritto un metodo semplice per l'esame e la fotografia della struttura vascolare congiuntivale. Un pratico sistema di classificazione viene presentato per le più comuni variazioni come la congestione, la tortuosità, le dilatazioni irregolari ed i microaneurismi delle venule, l'ischemia capillare e le ectasie capillari, la costrizione arteriolare e l'aggregato eritrocitario. Il significato delle varie anomalie vascolari viene discusso in quanto esse si presentano nelle venule confluenti, nelle venule post-capillari, nei capillari e nelle arteriole terminali e ramificanti. Vengono particolarmente sottolineate le alterazioni vascolari congiuntivali nel diabete.

Resume

On décrit une méthode simple pour l'examen et la photographie de la structure vasculaire conjonctivale. On présente un système pratique de classification pour les variations les plus communes comme la congestion, la tortuosité, les dilatations irrégulières et les micro-aneurysmes des veinules, l'ischémie capillaire et les ectasies capillaires, la constriction artériolaire et l'agrégat érythrocytaire. On discute la signification des différentes anomalies vasculaires du fait qu'elles se présentent dans les veinules confluentes, dans les veinules post-capillaires, dans les capillaires et dans les artérioles terminales et ramifiantes. On souligne tout particulièrement les altérations vasculaires conjonctivales dans le diabète.

Resumen

Se describe un método sencillo para el examen y la fotografía de la estructura vascular de la conjuntiva. Un sistema práctico de clasificación está descrito en el presente trabajo, para las variaciones más comunes, como la congestión, la tortuosidad, las dilataciones irregulares y los micro-aneurismas de las vénulas, la isquemia capilar y las ectasias capilares, la constricción arteriolar y el agregado eritrocitario. La significación de las distintas anomalías vasculares se discute, ya que ellas se presentan en las vénulas confluyentes, en las vénulas post-capillares, en los capillares y en las arteriolas terminales y ramificadas. Se subrayan de modo particular las alteraciones vasculares de la conjuntiva en la díabetes.

Zusammenfassung

Es wird eine einfache Methode fuer die Untersuchung und die Photographie der Bindehautgefaess-Struktur beschrieben. Ferner wird ein praktisches System der Klassifizierung fuer die gewoehnlichsten Veraenderungen wie z. B. die Kongestion, die Schlaengelung, die unregelmaessigen Erweiterungen, die Mikroaneurysmen der Venulae, die Kapillar-Ischaemie und Kapillar-Ektasien, die Arteriolen-Zusammenschnuerung sowie die Erythrozyten-Aggregate vorgestellt. Dann diskutiert man ueber die Bedeutung der verschiedenen vaskulaeren Anomalien, da diese bei den zusammenfliessenden Venulae, den post-kapillaren Venulae sowie den terminalen und verzweigenden Kapillaren und Arteriolen auftreten. Es werden insbesondere die Bindehautgefaess-Veraenderungen beim Diabetes hervorgehoben.

Summary

A simple method for screening and photographing the conjunctival vasculature is described. A practical grading system is presented for the commoner variations such as venular congestion, tortuosity, irregular dilatations and microaneurysms, capillary ischemia and ectasias and arteriolar constriction and red-cell aggregation. The significance of the various vascular anomalies is discussed as they are present in the collecting venules, postcapillary venules, capillaries, and in the terminal and branching arterioles. Special emphasis is laid on conjunctival vascular changes in diabetes.

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Supported in part by Grants from the U.S. Public Health Service (AM-04146), the John A. Hartford Foundation, and the Massachusetts Lions' Eye Research Fund. Dr. Chazan was holder of an Earl WilsonFight for Sight Award, of the National Council to Combat Blindness, Inc.

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Chazan, B.I., Balodimos, M.C. Conjunctival vascular lesions. Classification and clinical significance with special reference to diabetes. Acta diabet. lat 6, 355–370 (1969). https://doi.org/10.1007/BF01548059

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