[Assessment of retinal function in cataract by electroretinography].
Electroretinography (ERG) was used to assess the functions of the retinal central and peripheral sections in patients with cataracts of various origins and different degrees of opacities; the method is based on the use of 18-20 degrees red saturating stimulus fit in sucker electrode for macular ERG and Hanz-Feld white stimulus for total ERG. Macular biopotential recorded in the patients with mature cataracts without pathologic changes in the macular region coincided with the mean values of local macular ERG recorded in transparent ocular media with medium-intensity stimuli. Macular biopotentials in cataracts significantly differed from the normal values in dystrophic changes of the macular area. Total ERG values in transparent ocular media and in mature cataract patients coincided only in with saturating white stimulus in cases when no retinal abnormalities were present. ERG with weak and medium-intensity stimulating light has shown has shown a significant difference of ERG parameters in these patient populations. Analysis of ERG findings in 375 patients with cataracts of various origins and with various opacity degrees has shown the possibility of extrapolating the data on ERG symptoms of retinal abnormalities known in transparent ocular media to the diagnosis of the pathologic processes in the retina when the fundus of the eye cannot be seen; this method will be useful in predicting visual functions in the postoperative period.
Shamshinova
A M
AM
Iakovlev
A A
AA
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002386:Cataract / Q000503:physiopathology*; D002648:Child; D002675:Child, Preschool; D004596:Electroretinography / Q000295:instrumentation; D006801:Humans; D007223:Infant; D008266:Macula Lutea / Q000503:physiopathology; D008875:Middle Aged; D012160:Retina / Q000503:physiopathology*
Otsenka funktsii setchatki pri katarakte s pomoshch'iu élektroretinografii.