Low visual acuity and asteroid hyalosis
Salim Belhassan, Rajaa, Daoudi
The Pan African Medical Journal. ;18:247. doi:10.11604/pamj..18.247.4917

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Images in clinical medicine

Low visual acuity and asteroid hyalosis

Salim Belhassan, Rajaa, Daoudi
Pan Afr Med J. 2014; 18:247. doi:10.11604/pamj.2014.18.247.4917. Published 26 Jul 2014



A 56 years old man was admitted to the ophthalmology department for low visual acuity since his 45 years old with no amelioration after optic correction. The physical exam found visual acuity at 1/10 on the right eye and 9/10 on the left one, clear cornea, intraocular pressure at 14 mmhg on both eyes, the fundus of the right eye showed multiple yellow mobile vitreous particles that are absent on the left fundus. Asteroid hyalosis is a degenerative condition of the eye involving small white opacities in the vitreous humor. Clinically, these opacities are quite refractile, giving the appearance of stars (or asteroids) shining in the night sky except that ocular asteroids are often quite mobile. Ocular asteroids must be distinguished from the more common typical vitreous floaters, which are usually fibrillar or cellular condensates. The cause of asteroid hyalosis is unknown, but it has been associated with diabetes mellitus, hypertension and hypercholesterolemia. The asteroid bodies are made up of hydroxylapatite, which in turn consists of calcium and phosphates or phospholipids. While asteroid hyalosis does not usually severely affect vision, the floating opacities can be quite annoying, and may interfere significantly with visualization and testing of the retina. The treatment of asteroid hyalosis is usually unnecessary, vitrectomy may occasionally be indicated, for both diagnostic and therapeutic purposes.


Corresponding author:
Salim Belhassan, University of Mohamed V Souissi, hôpital des Spécialités, ophtalmology A department, Morocco
belhassansalim@gmail.com

©Salim Belhassan et al. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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