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Cone b-wave implicit time as an early predictor of rubeosis in central retinal vein occlusion
J Larsson1, S Andreasson, B Bauer
1Department of Ophthalmology, Lund University Hospital, Sweden. Jorgen.Larsson@oft.lu.se
Purpose:
To investigate the predictive value of the cone b-wave implicit time in the 30-Hz flicker electroretinogram for rubeosis in the acute phase of central retinal vein occlusion.
Methods:
In a prospective study, 25 patients (25 eyes) with a central retinal vein occlusion of less than 14 days' duration were examined with electroretinography and followed up for a minimum of 18 months.
Results:
The cone b-wave implicit time in the eyes that developed rubeosis (n = 11) was more than 37.1 milliseconds and in the eyes that did not develop rubeosis (n = 14), less than 37 milliseconds (P < .00001).
Conclusion:
The cone b-wave implicit time in the 30-Hz flicker electroretinogram is a good predictor of rubeosis at an early stage in eyes with central retinal vein occlusion.