Meyer P A, Watson P G
Br J Ophthalmol. 1987 Jan;71(1):2-10. doi: 10.1136/bjo.71.1.2.
By reducing the dose of injected fluorescein its leakage from conjunctival and episcleral capillaries has been minimised. These vessels have been demonstrated with great clarity, and the venous circulation, previously obscured by extravascular fluorescein, has also been revealed. The anatomy of the anterior segment vessels, and the blood flow within them, has been studied in eight normal subjects. The anterior ciliary arteries feed an anterior episcleral arterial circle that has superficial and deep components. This supplies the anterior conjunctival and episcleral circulations, the limbal arcades, and the iris arterioles. Where the superficial arterial circle is deficient, isolated vessels emerge from the deep segments of the circle to supply the episcleral plexus and conjunctival arterioles. Watershed zones between the anterior and posterior territories of the conjunctival and episcleral circulations overlap. They may fluoresce up to 30 seconds after the anterior ciliary arteries. The scope of this technique and the implications of these findings are discussed.
通过减少荧光素的注射剂量，其从结膜和巩膜上毛细血管的渗漏已降至最低。这些血管已清晰地显示出来，并且之前被血管外荧光素遮蔽的静脉循环也已显现。对8名正常受试者的眼前节血管解剖结构及其内部的血流情况进行了研究。睫状前动脉供血形成一个有浅层和深层成分的巩膜前动脉环。该动脉环供应眼前结膜和巩膜循环、角膜缘血管弓以及虹膜小动脉。在浅层动脉环缺失的部位，有孤立的血管从动脉环的深层段发出，供应巩膜丛和结膜小动脉。结膜和巩膜循环前后区域之间的分水岭区相互重叠。它们可能在睫状前动脉之后长达30秒仍发出荧光。本文讨论了该技术的范围以及这些发现的意义。
