{'fraction_non_alphanumeric': 0.020544672718585764, 'fraction_numerical': 0.00047778308647873863, 'mean_word_length': 5.564263322884012, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Letter to the editor: Changes in macular function after ozurdex for retinal vein occlusion.

in Macular Function after Ozurdex for Retinal Vein Occlusion We congratulate Querques et al. for their study entitled ‘‘Changes in Macular Function after Ozurdex for Retinal Vein Occlusion.’’ The authors investigated the relationship between the changes in macular morphology and function after intravitreal dexamethasone implant (Ozurdex) for retinal vein occlusion. The study reports important results especially in terms of ocular electrophysiology and retinal morphology. The authors reported that at 1 month, mean best-corrected visual acuity, retinal sensitivity, and central macular thickness (CMT) improved significantly. Improvement remained significant for retinal sensitivity and CMT at the third month. However, these improvements were no longer significant at the fourth month. In addition, the changes in multifocal electroretinogram (mfERG) were not significant at any of the time points. The authors reported significant correlations between functional (except mfERG) and morphological measures. The authors did not perform the correlations between mfERG and morphological measures. Although there was no reported significant difference in mfERG, we wonder about the possible correlation between mfERG and morphometric parameters at the pretreatment point. We know that mfERG is primarily a function of cone photoreceptors. For this reason, it might be more reasonable to correlate mfERG changes with cone outer segment tip (COST) thickness. We previously found similar results in that CMT was not significantly correlated to mfERG in patients with diffuse diabetic macular edema after intravitreal triamcinolone injection. However, in our study, we did not have COST thickness of the patients. We would be particularly interested in any correlations the authors found between mfERG and COST thickness. This new statistics will clarify whether COST thickness alone may be used as a biomarker for objective retinal function as assessed by mfERG in patients with retinal vein occlusion.