Atrophy of optic nerve fibres in compression of the chiasm. Observer variation in assessment of atrophy.
Different observers' assessment of atrophy according to a semi-quantitative method was analysed. Five observers scored the degree of atrophy on magnified black-and-white fundus photographs from normal controls and from patients with chiasmal lesions of different severity. Four of the five examiners achieved a reasonably uniform assessment of atrophy. The results of the test prompted some modification in the grading system.
D000238:Adenoma, Chromophobe / Q000150:complications*; D002983:Clinical Competence; D005069:Evaluation Studies as Topic; D005451:Fluorescein Angiography; D006801:Humans; D009408:Nerve Compression Syndromes; D009896:Optic Atrophy / Q000175:diagnosis* / Q000209:etiology; D009897:Optic Chiasm; D010911:Pituitary Neoplasms / Q000150:complications*