Anterior ischemic optic neuropathy

master's thesis

• Author: Laurent Antoine Roger Martini
• Mentor: Branimir Cerovski (mentor)
• Committee member: Smiljka Popović-Suić (predsjednik povjerenstva)
• Committee member: Miro Kalauz (član povjerenstva)
• Committee member: Branimir Cerovski (član povjerenstva)
• Granter: University of Zagreb; School of Medicine; Zagreb
• Defense date and country: 2016-07-15, Croatia
• Scientific / art field, discipline and subdiscipline: BIOMEDICINE AND HEALTHCARE; Clinical Medical Sciences; Ophthalmology

Abstract

AION is a condition that involves the impairment or complete loss of vision due to
damage to the optic nerve from insufficient blood supply. By definition, AION involves
the first 1mm segment of the optic disc, the optic head. It is very important because it
constitutes one of the major causes of blindness or seriously impaired vision among
the middle-aged and elderly population, although no age is spared. AION is divided
into two main categories according to its etiologies: NAION and AAION. The
presentation at clinical examination of the two types of AION is similar, but
differences exist. The biomicroscopic exam shows the color, size of cup (cup-to-disc
ratio), sharpness of edge, swelling, hemorrhages, notching in the optic disc and any
other pathological abnormalities. In the case of AION the optic disc is swollen and
pale. Since this presentation is not specific to this condition, further examination
methods have to be used like a perimeter to test the visual field of the patient. AAION
occurs in aproximately 20% of patients with GCA and constitutes 5 to 10% of all
AION.The pathophysiology of NAION remains unknown but several risk factors and
conditions have been shown to increase its incidense. NAION is the most frequent
kind of AION and no treatment has been proven really effective until now, while
AAION is managed with corticosteroids.

• Keywords: ophthalmology; optic neuropathy; giant cell arteritis
• Language: english
• URN:NBN: urn:nbn:hr:105:625722
• Study programme: Title: Medicine (in English language); Study programme type: university; Study level: integrated undergraduate and graduate; Academic / professional title: doktor/doktorica medicine (doktor/doktorica medicine)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2017-08-30 12:09:53