PubMed · 5710899
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O A Wiegmann. 1968. Quantitative plotting of ocular deviations.. https://pubmed.ncbi.nlm.nih.gov/5710899/
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Erdheim-Chester disease (ECD) is an increasingly recognised form of fibro-inflammatory process characterised by xanthomatous histiocytes containing large amounts of ingested lipid, plasma cells, macrophages and Touton-type giant cells. Ophthalmic involvement in ECD has been reported in only 22 cases. We describe two patients, one presenting with diabetes insipidus and subsequently developing orbital pseudotumours and retroperitoneal fibrosis, the other presenting with exophthalmos and diplopia. The first patient was treated with cladribine and subsequently developed sudden onset of bilateral blindness while the second required radiation therapy for the retro-orbital process and developed radiation retinopathy. These cases typify the variable presentation and course in patients with ECD.
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UNLABELLED: THE ARTIFACT: The artifact is a light rectangular slate of black cardboard showing two white lines at 40 degrees angle. It provokes physiological diplopia in lateral vision. BACKGROUND: In normal subjects, the right oblique line stimulates the right nasal hemiretina, perceived as an oblique line, and the left temporal hemiretina, perceived as a vertical line, both lines being on the right hand side. Likewise, the left oblique line is seen as two lines on the left hand side. The 4 lines form and M and a W combined. The strabismus subject sees 3 lines for he neutralizes one; the alternating squint sees only 2; the heterophoric sees 4 lines, two of which blurred, and the hemianopic sees only part of the dial. RESULTS: The subject must select the image he sees from an array of possibilities shown on the back of the dial. From 5 years of age on, normal subjects select the [symbol: see text] or the "butterfly"; hemianopic subjects correctly describe the loss of either the left or right field. CONCLUSIONS: The sundial facilitates both the screening and the treatment of binocular vision disorders. Bangerter's hemifilter will be used in association with exercises for physiological diplopia at home under monthly orthoptic control. All this made it possible to obtain useful peripheral fusion in early onset strabismus.