A prospective study
نویسنده
چکیده
Irvine (I953) emphasized that macular degeneration was a major complication in cataract extraction. Gass and Norton (I966) described the appearance of aphakic cystoid macular oedema as shown by fluorescein angiography in patients who experienced a fall in visual acuity 4 to I2 weeks after cataract extraction. Gass and Norton (i 969) showed that, while the oedema settled in 6 months in 50 per cent of the eyes involved, it persisted for over 3 years in 8 per cent. Tolentino and Schepens (I965) and Maumenee (I967) thought that I per cent of newly aphakic patients developed macular oedema, their views being based on the results of slit-lamp examination. By contrast, in a prospective study using fluorescein angiography, Irvine, Bresky, Crowder, Forster, Hunter, and Kulvin (I97I) showed the much higher incidence of cystoid macular oedema of 40 per cent 6 to 8 weeks after cataract extraction. In this last series the oedema was transient in many cases and in only a few was the visual acuity severely affected. In order to establish the incidence of macular oedema after cataract extraction and to assess the factors implicated in the pathogenesis of this condition, a prospective study was carried out on IOO consecutive patients undergoing cataract extraction who were cared for by us between October 1972 and June I973.
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