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A gas bubble may be placed inside the eye, to keep the retina in place. If a gas bubble is used, sometimes a certain head positioning (posturing) has to be maintained, such as face down or sleeping on the right or left side. The gas bubble will dissolve over time, but this takes several weeks.
Visual representation of an eye with a gas bubble looking at a bouquet of flowers (8 days after vitrectomy surgery). Vitrectomy is a surgical procedure used to treat complicated retinal detachments. [8] It is especially useful for large retinal tears or tears that are not easily visible. [8]
Vitrectomy is the common way to treat a macular hole. It is done by placing a gas bubble in the vitreous of the eye which helps flatten the macular hole and holds it in place as the eye heals. The gas bubble slowly shrinks on its own. [6] Treatment is also done using ocriplasmin. [7]
Retinal detachments are usually caused by retinal tears, and a scleral buckle can be used to close the retinal break, both for acute and chronic retinal detachments. [citation needed] Scleral buckles come in many shapes and sizes. A silicone sponge (with air filled cells) is a cylindrical element that comes in various sizes.
The contents of the resultant gas bubble are thought to be mainly carbon dioxide, oxygen and nitrogen. [13] The effects of this process will remain for a period of time known as the "refractory period", during which the joint cannot be "re-cracked", which lasts about 20 minutes, while the gases are slowly reabsorbed into the synovial fluid.
The gas-filled microbubbles, typically air or perfluorocarbon, oscillate, and vibrate if a sonic energy field is applied and may reflect ultrasound waves. This distinguishes the microbubbles from surrounding tissues. Because gas bubbles in liquid lack stability and would therefore quickly dissolve, microbubbles are typically encapsulated by shells.
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