{'fraction_non_alphanumeric': 0.02456140350877193, 'fraction_numerical': 0.017543859649122806, 'mean_word_length': 5.074468085106383, '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}}
The drainage of subretinal fluid.

Drainage of subretinal fluid was performed in 84% of a consecutive series of 662 scleral buckling procedures. Complications of drainage occurred in 5.6% of cases, and the ultimate anatomical success rate in the series was 94.2%. Ninety-seven percent of failures were due to massive PVR, but this process was not associated with complications of surgery. Although drainage of subretinal fluid is a potentially hazardous maneuver, complications of this procedure are an uncommon cause of anatomical failure in retinal detachment surgery.