Home Work About Ocular Trauma.docx

HOME WORK ABOUT OCULAR TRAUMA CYNTHIA OKTORA DWIYANA (I11109063) 1. What are the complication of traumatic hyphema? • • •

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Posterior synechiae. This complication is secondary to iritis or iridocyclitis. Increasing of IOPGlaucoma Peripheral anterior synechiae – The pathogenesis of peripheral anterior synechiae may be due to a prolonged iritis associated with the initial trauma and/or chemical iritis resulting from blood in the anterior chamber. Alternately, the clot in the chamber angle may subsequently organize, producing trabecular meshwork fibrosis that closes the angle. Corneal Bloodstaining – Corneal bloodstaining primarily occurs in patients with a total hyphema and associated elevation of intraocular pressureCorneal bloodstaining is more likely to occur in patients who have a total hyphema that remains for at least 6 days with concomitant, continuous intraocular pressures of greater than 25 mm Hg. Optic atrophy – may result from either acute, transiently elevated intraocular pressure or chronically elevated intraocular pressure; each occurrence was studied in a series of patients with hyphema in an attempt to identify predisposing factors Secondary Hemorrhage Other complications associated with hyphema involve disruption of the posterior segment. These complications include, but are not limited to, choroidal rupture, macular scarring, retinal detachment, vitreous hemorrhage, and zonular dialysis. Even a case of sympathetic ophthalmia following hyphema has been reported.

2. What will happen if the FB into the viterous? • • • • •

Endophtalmitis Vitreous Hemorrhage Vitreous abscess Chalcosis due to copper IOFB Retinal ablatio

3. Comberg Examination A contact lens with four lead marks is placed over the cornea and two exposurse are made, one exactly in the visual line and one at right angle from the first exposure. Location of the foreign body with reference to the central point then is easily determined by drawing lines between the shadows of the marks on the plate. The meridian of the globe is found by extending the line from the foreign body to the central point to meet the horizontal drawn on the chart and the distance of the particle from the plane of the limbus is easily determined in lateral view. The results are plotted in special chart.