Vitreous opacities may be the result of developmental abnormalities, degenerative processes, inflammation, intraocular bleeding, and trauma. Among the vitreous opacities, we can mention asteroid hyalosis (AH) and synchysis scintillans (SC). AH is characterized by the presence of small spherical opacities of yellowish white color, composed of lipids, calcium and phosphorus. This condition is usually unilateral and more common in men. SC is characterized by the presence of highly refractive vitreous opacities, flattened, brown or gold colored, composed of cholesterol. This condition occurs at an earlier age than asteroid hyalosis and is usually bilateral. Both AH and SC are diagnosed through ophthalmologic examination, but complementary exams provide additional information on the retinal condition. The treatment of these opacities is not usually necessary and vitrectomy is performed in the presence of symptoms or to facilitate the monitoring and treatment of other retinal diseases.
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Allison KL, Price J, Odin L. Asteroid hyalosis and axial length measurement using automated biometry. J Cataract Refract Surg. 1991;17(12):181–6.CrossRefGoogle Scholar
Andrews JS, Lynn C, Scobey JW, et al. Cholesterosis bulbi. Case report with modern chemical identification of the ubiquitous crystals. Br J Ophthalmol. 1973;57(11):838–44.CrossRefGoogle Scholar
Wand M, Smith TR, Cogan DG. Cholesterosis bulbi: the ocular abnormality known as synchysis scintillans. Am J Ophthalmol. 1975;80(2):177–83.CrossRefGoogle Scholar
Winkler J, Lunsdorf H. Ultrastructure and composition of asteroid bodies. Invest Ophthalmol Vis Sci. 2001;42(5):902–7.PubMedGoogle Scholar
Wong SC, Sampath R. Erroneous automated refraction in a case of asteroid hyalosis. J Cataract Refract Surg. 2002;28(9):1707–8.CrossRefGoogle Scholar
Yamaguchi T, Inoue M, Ishida S, et al. Detecting vitreomacular adhesions in eyes with asteroid hyalosis with triamcinolone acetonide. Graefes Arch Clin Exp Ophthalmol. 2007;245(2):305–8.CrossRefGoogle Scholar
Yannuzzi LA, et al. The retinal atlas. Philadelphia: Elsevier; 2017.Google Scholar