Abstract
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.
Full text
PDF








Images in this article
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- ASHTON N. Anatomical study of Schlemm's canal and aqueous veins by means of neoprene casts. II. Aqueous veins. Br J Ophthalmol. 1952 May;36(5):265–contd. doi: 10.1136/bjo.36.5.265. [DOI] [PMC free article] [PubMed] [Google Scholar]
- ASHTON N. Anatomical study of Schlemm's canal and aqueous veins by means of neoprene casts. Part I. Aqueous veins. Br J Ophthalmol. 1951 May;35(5):291–303. doi: 10.1136/bjo.35.5.291. [DOI] [PMC free article] [PubMed] [Google Scholar]
- ASHTON N., SMITH R. Anatomical study of Schlemm's canal and aqueous veins by means of neoprene casts. III. Arterial relations of Schlemm's canal. Br J Ophthalmol. 1953 Oct;37(10):577–586. doi: 10.1136/bjo.37.10.577. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Bron A. J., Easty D. L. Fluorescein angiography of the globe and anterior segment. Trans Ophthalmol Soc U K. 1970;90:339–367. [PubMed] [Google Scholar]
- Bruun-Jensen J. Fluorescein angiography of the anterior segment. Am J Ophthalmol. 1969 Jun;67(6):842–845. doi: 10.1016/0002-9394(69)90076-2. [DOI] [PubMed] [Google Scholar]
- Cobb B. Vascular tufts at the pupillary margin: a preliminary report on 44 patients. Trans Ophthalmol Soc U K. 1969;88:211–221. [PubMed] [Google Scholar]
- Jensen V. A., Lundbaek K. Fluorescence angiography of the iris in recent and long-term diabetes. Preliminary communication. Acta Ophthalmol (Copenh) 1968;46(3):584–585. doi: 10.1111/j.1755-3768.1968.tb02854.x. [DOI] [PubMed] [Google Scholar]
- MACLEAN A. L., MAUMENEE A. E. Hemangioma of the choroid. Am J Ophthalmol. 1960 Jul;50:3–11. doi: 10.1016/0002-9394(60)90833-3. [DOI] [PubMed] [Google Scholar]
- Marsh R. J., Ford S. M. Blood flow in the anterior segment of the eye. Trans Ophthalmol Soc U K. 1980 Sep;100(3):388–397. [PubMed] [Google Scholar]
- Mitsui Y., Matsubara M., Kanagawa M. Fluorescence irido-corneal photography. Br J Ophthalmol. 1969 Aug;53(8):505–512. doi: 10.1136/bjo.53.8.505. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Morrison J. C., Van Buskirk E. M. Anterior collateral circulation in the primate eye. Ophthalmology. 1983 Jun;90(6):707–715. doi: 10.1016/s0161-6420(83)34501-2. [DOI] [PubMed] [Google Scholar]
- NOVOTNY H. R., ALVIS D. L. A method of photographing fluorescence in circulating blood in the human retina. Circulation. 1961 Jul;24:82–86. doi: 10.1161/01.cir.24.1.82. [DOI] [PubMed] [Google Scholar]
- Palestine A. G., Brubaker R. F. Plasma binding of fluorescein in normal subjects and in diabetic patients. Arch Ophthalmol. 1982 Jul;100(7):1160–1161. doi: 10.1001/archopht.1982.01030040138025. [DOI] [PubMed] [Google Scholar]
- Rosen E., Lyons D. Microhemangiomas at the pupillary border demonstrated by fluorescein photography. Am J Ophthalmol. 1969 Jun;67(6):846–853. doi: 10.1016/0002-9394(69)90077-4. [DOI] [PubMed] [Google Scholar]
- Talusan E. D., Schwartz B. Fluorescein angiography. Demonstration of flow pattern of anterior ciliary arteries. Arch Ophthalmol. 1981 Jun;99(6):1074–1080. doi: 10.1001/archopht.1981.03930011074018. [DOI] [PubMed] [Google Scholar]
- Tanaka T., Riva C., Ben-Sira B. Blood velocity measurements in human retinal vessels. Science. 1974 Nov 29;186(4166):830–831. doi: 10.1126/science.186.4166.830. [DOI] [PubMed] [Google Scholar]
- Watson P. G., Bovey E. Anterior segment fluorescein angiography in the diagnosis of scleral inflammation. Ophthalmology. 1985 Jan;92(1):1–11. doi: 10.1016/s0161-6420(85)34074-5. [DOI] [PubMed] [Google Scholar]
- Weinstein P. New Concepts Regarding Anterior Drainage of the Eye. Br J Ophthalmol. 1950 Mar;34(3):161–168. doi: 10.1136/bjo.34.3.161. [DOI] [PMC free article] [PubMed] [Google Scholar]





