Bastos Albedy Moreira, Rodrigues Anderson Raiol, Côrtes Maria Izabel Tentes, Lacerda Eliza Maria da Costa Brito, Lima Mônica Gomes, Teixeira Cláudio Eduardo Corrêa, Silveira Luiz Carlos de Lima
Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil.
Núcleo de Medicina Tropical, Universidade Federal do Pará, Belém, Brazil.
Front Neurol. 2017 Sep 21;8:487. doi: 10.3389/fneur.2017.00487. eCollection 2017.
Deficits in visual acuity, visual field, and oculomotor function are commonly detected after repair of cerebral aneurysms. However, when these deficits are absent, it does not mean that other potential visual deficits also are absent. Here, we report three cases that after complete recover from surgical repair of cerebral aneurysms presented minimal visual acuities of about 20/20 and no visual disturbances. While two of them (Cases 1 and 2) showed visual fields with no relevant central defects, two of them showed relevant impairments in spatial contrast sensitivity (Cases 2 and 3). This evidence supports that after complete recover from surgical repair of hemorrhagic cerebral aneurysms spatial contrast sensitivity can be asymptomatically impaired when visual acuity (Cases 2 and 3) and visual fields (Case 2) are not correlated with symptoms of visual disturbances. Hypothetical explanations and consequences of such evidence are discussed.
在脑动脉瘤修复术后，常可检测到视力、视野和动眼功能的缺陷。然而，当这些缺陷不存在时，并不意味着其他潜在的视觉缺陷也不存在。在此，我们报告三例病例，这些病例在脑动脉瘤手术修复后完全康复，视力约为20/20，且无视觉障碍。其中两例（病例1和病例2）视野无相关中央缺损，但有两例存在空间对比敏感度的相关损害（病例2和病例3）。这一证据支持，在出血性脑动脉瘤手术修复完全康复后，当视力（病例2和病例3）和视野（病例2）与视觉障碍症状不相关时，空间对比敏感度可能会无症状地受损。本文讨论了此类证据的假设性解释及后果。
