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LETTER TO THE EDITOR |
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Year : 2011 | Volume
: 59
| Issue : 3 | Page : 261-262 |
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Hemi-central retinal artery occlusion in young adults
Amresh Chopdar
7 Chantry Hurst, Epsom, Surrey KT18 7 BN, United Kingdom
Date of Web Publication | 13-May-2011 |
Correspondence Address: Amresh Chopdar 7 Chantry Hurst, Epsom, Surrey, KT18 7 BN United Kingdom
Source of Support: None, Conflict of Interest: None | Check |
DOI: 10.4103/0301-4738.81033
How to cite this article: Chopdar A. Hemi-central retinal artery occlusion in young adults. Indian J Ophthalmol 2011;59:261-2 |
Dear Editor,
I read the article with interest on hemi-central retinal artery occlusion in young adults by Rishi et al.[1]
This condition is unlikely to occur on ground of embryology, as the central retinal artery develops from a single hyaloid artery and enters the lamina cribrosa, and divides further into its principal branches. However, one may have a hemi-central retinal vein occlusion because two veins develop on either side of the hyaloid artery, which exit from the lamina cribrosa after joining to form a single central retinal vein. Occasionally, they may not come closer to unite and exit the lamina cribrosa separately, thus creating two central retinal veins. [2],[3],[4] The clinical pathology produced by such an anomaly has been extensively reported. [5] These cases reported here is early branching of the central retinal artery prior to its entry through the lamina cribrosa. In case 1, [Figure 1] shows associated choroidal infarct of the upper half of the fundus. [Figure 2] shows that the upper artery is a cilioretinal artery, whereas the lower one is the true central retinal artery. The fluorescein angiography in [Figure 3] shows the upper artery brighter than the lower, indicating that this is an earlier branch. Cases 2-4 are identical to case 1 and all of them are associated with choroidal and retinal ischemia.
References | | |
1. | Rishi P, Rishi E, Sharma T, Mahajan S. Hemi-central retinal artery occlusion in young adults. Indian J Ophthalmol 2010;58:425-32. [ PUBMED] |
2. | Mann I. The development of human eye. 3 rd ed. London: British Medical Association; 1964. p. 228. |
3. | Hayreh SS, Hayreh MS. Hemi central retinal vein occlusion, abstracted. Invest Ophthalmol Vis Sci 1979;18:ARVO suppl:170. |
4. | Chopdar A. Dual trunk central retinal vein Incidence in clinical practice. Arch Ophthalmol 1984;102:85-7. [ PUBMED] [ FULLTEXT] |
5. | Chopdar A. Hemi central retinal vein occlusion, pathogenesis, clinical features, natural history and incidence of dual trunked central retinal vein. Trans Ophthalmol Soc U K 1982;102:241-8. [ PUBMED] |
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