Summary
Seeds of Ammi majus were fed to a group of ducklings which were exposed to sunlight. Acute symptoms of photosensitization developed after 2 to 3 days. One month later, after the acute phase had passed, mydriasis was seen in all the ducklings. In addition, ophthalmoscopic examination revealed dense pigment spots in the fundus. The control group of ducklings exposed to sunlight but not fed A. majus seeds showed no mydriasis or pigment spots.
Zusammenfassung
Augenveränderungen bei jungen Enten nach Fütterung von Ammi majus‐Samen
Jungen Enten wurde Ammi majus‐Samen (Umbelliferenart) verabreicht unter gleichzeitiger Sonnenlicht‐Exposition der Versuchstiere. Nach 2–3 Tagen entwickelten sich Symptome der Photosensibilisierung. Ein Monat später, d. h. nach Abklingen der akuten Krankheitsphase trat bei alien Entchen eine Mydriasis auf, wobei sich im Augenfundus dichte Pigmentflecken entwickelten. Bei den Kontrolltieren (ohne Ammi majus‐Futter) fehlten sowohl die Mydriasis als auch die Pigmentflecken.
Résumé
Lesions oculaires chez des canetons alimentés avec des graines d'Ammi majus
De jeunes canards ont reçu des graines d'Ammi majus (sorte d'ombellifère) et ont été en même temps exposes à la lumière solaire. Des symptômes de photosensibilisation se développèrent après 2–3 jours. Une mydriase est apparue chez tous les canetons un mois plus tard après la cessation de la phase aiguë de la maladie; d', épaisses taches de pigment se développèrent au fond de l'oeil. La mydriase comme les taches de pigment ne sont pas apparues chez les animaux de contrôle qui n'ont pas reçu d'Ammi majus.
Resumen
Modificaciones oftálmicas en patitos tras la alimentación con semilla de Ammi majus
Se administró a patitos semillas de Ammi majus (umbelífera), exponiendo los animales al mismo tiempo a la luz solar. Tras 2–3 días se desarrollaron síntomas de fotosensibilización. Un mes más tarde, es decir, tras declinar la fase aguda de enfermedad, apareció una midriasis en todos los patitos, desarrollándose manchas pigmentarias densas en el fondo del ojo. En los animales testigos (que no recibieron pienso con Ammi majus) faltaban la midriasis y las manchas pigmentarias.
We present a passive, solid-state threshold-triggered Wideband Protection Filter (WPF) that blocks the transmission only if the power exceeds a certain threshold. We demonstrate the protection ability of the WPF against laser threats including protection behavior for single and series of pulses. The WPF can be readily used for protection of detectors, cameras, or eye safety.
Acute and chronic manifestations of photosensitization were induced in ducklings by the oral administration of the dermatological drug methoxsalen in conjunction with exposure to sunlight. An acute keratoconjunctivitis, photophobia and epiphora were seen in all the affected birds and were followed by closure of the ocular fissure, mydriasis and in some cases ankyloblepharon. A severe pigmentary retinopathy was the most striking eye lesion. This latter change indicates the desirability of a careful appraisal of the use of this drug in medicine and it is suggested that patients under treatment be examined for any ocular side-effects.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.