Katz B, Hoyt W F
Neuro-ophthalmology Unit, California Pacific Medical Center, San Francisco 94115.
Ophthalmology. 1995 Feb;102(2):349-54. doi: 10.1016/s0161-6420(95)31018-4.
The authors describe a benign condition characterized by intrapapillary and subretinal peripapillary hemorrhage, incomplete posterior vitreous detachment with persisting attachments to the disc, and preservation of optic nerve function in young patients.
Eight patients 11 to 42 years of age with no or mild symptoms (blur, spot, or smudge) were referred for disc hemorrhage; seven of these patients were Asian. All underwent complete ophthalmologic examination, including detailed slit-lamp microscopy; particular attention was paid to vitreous attachments.
Superficial hemorrhage occurred predominantly in the superior hemidisc and was often striking in appearance. Subretinal hemorrhage occurred at the superonasal disc margin in six patients and was centered inferonasally in two. Discs were generally small, mildly dysplastic, and tilted; all were mildly elevated. The posterior vitreous body was separated from the retina but remained attached to the disc. Six patients had subtle visual field abnormalities in the involved eye. The hemorrhages resolved without sequelae or impairment of vision. During a 6-month follow-up, no patient progressed to complete vitreous detachment, retinal tear, or retinal detachment or required surgery to release traction.
The authors postulate that vitreopapillary traction traumatized disc vessels, causing hemorrhage in and around the disc. The superior hemidisc received the shearing force of detachment, which tore superficial vessels; transmission of the force through the retina caused subretinal bleeding. Posterior vitreous detachment remained incomplete because of tenacious vitreopapillary attachments. Mildly dysplastic discs, as in the young patients with myopia reported here, may have unusual vitreous attachments, predisposing them to the occurrence of and trauma from premature vitreous separation. The condition described is benign and requires no further evaluation or intervention.
作者描述了一种良性病症,其特征为乳头内和视网膜下视乳头周围出血、不完全性玻璃体后脱离且与视盘持续相连,以及年轻患者视神经功能得以保留。
8例年龄在11至42岁之间、无症状或仅有轻微症状(视物模糊、黑点或暗影)的患者因视盘出血前来就诊;其中7例为亚洲人。所有患者均接受了全面的眼科检查,包括详细的裂隙灯显微镜检查;特别关注了玻璃体的附着情况。
浅表出血主要发生在视盘上半区,外观通常较为显著。6例患者视网膜下出血发生在视盘鼻上缘,2例以鼻下缘为中心。视盘通常较小,轻度发育异常且倾斜;均有轻度隆起。玻璃体后极部与视网膜分离,但仍与视盘相连。6例患者患眼有轻微视野异常。出血自行消退,无后遗症或视力损害。在6个月的随访期间,无患者进展为完全性玻璃体脱离、视网膜裂孔或视网膜脱离,也无需手术解除牵拉。
作者推测玻璃体视盘牵拉损伤了视盘血管,导致视盘及其周围出血。视盘上半区承受了脱离的剪切力,撕裂了浅表血管;该力通过视网膜传导导致视网膜下出血。由于玻璃体视盘附着紧密,玻璃体后脱离仍不完全。如本文报道的患有近视的年轻患者那样的轻度发育异常视盘,可能有异常的玻璃体附着,使其易发生过早玻璃体分离及其所致的损伤。所描述的这种病症是良性的,无需进一步评估或干预。