Opacification of the posterior capsule occurs most commonly from Elschnig pearl migration or fibrosis. The physical contact of a posterior chamber lens, particularly one with a reverse optic, has been postulated to decrease the rate of capsular opacification by creating a barrier to Elschnig pearl migration. This randomized prospective clinical study comparing the 3M style 34S convex-plano optic and style 34R plano-convex (reverse) optic posterior chamber lens demonstrated a statistically significant reduction in capsular opacification by Elschnig pearls at one year in the reverse optic lenses (18.2% versus 7.6%, P = .03). No statistically significant difference in capsular fibrosis rates was noted (2.5% versus 4.5%, P = .48). The reverse optic implant also demonstrated greater iris to implant optic clearance.
Fat embolism is well known in traumatic skull fractures, chest compression and long bone fractures. Inkeles and Walsh (1975) first described fat embolism of retinal vessels following acute pancreatitis. Fat embolism of ocular vessels in this disease is presumably due to enzymatic destruction of omental tissue. The patient described here fell ill with acute pancreatitis after years of alcohol abuse; he noticed a considerable deterioration in vision. This was a result of fat embolism of the retinal arteries. Multiple cotton wool spots around the optic nerve and in the macular area, combined with some intraretinal hemorrhages, were seen at ophthalmoscopic examination. The pathogenesis of fat embolism of choroidal and retinal vessels following acute pancreatitis is discussed in brief.
Ultrasonography of the lacrimal gland is a harmless method of examination. Depending on reflectivity, sound attenuation, interior echo patterns and borders, a variety of diseases can be diagnosed echographically. Histological findings and corresponding ultrasonographical criteria are compared.
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