What is intraocular gas injection?

What is intraocular gas injection?

Intraocular gas is used by both vitreoretinal and anterior segment surgeons as an intraocular stent to maintain juxtaposition of the retina to the retinal pigment epithelium or the corneal endothelium to Descemet’s me-mrane. Figure 24.3 shows a slit-lamp photograph of bubbles in the anterior chamber of the eye.

Which injection is used for retinal disorder?

An intravitreal injection is a painless injection of medicine into the vitreous, which is the jelly-like substance inside the eye. The procedure is performed to place medicines inside the eye, near the retina. Intravitreal injections are a treatment that can be used with retinal diseases.

How do you know when the gas bubble in your eye is gone?

Later on, your sight will begin to return. The timing depends on the type of gas used: short-acting gas (SF6) takes 2 to 3 weeks to disappear; long-acting gas (C3F8) takes about 2 months. When the gas bubble is down to half size, you will see a horizontal line across your vision, bobbing up and down with head movement.

What gas is used in vitrectomy?

Four different intraocular gases are commonly used in vitreoretinal surgery: air, sulfur hexafluoride (SF6), perfluoroethane (C2F6) and perfluoropropane (C3F8). In the vitreous cavity, these gases are colorless, odorless and inert.

What is vitrectomy done for?

A vitrectomy is a type of eye surgery to treat various problems with the retina and vitreous. During the surgery, your surgeon removes the vitreous and replaces it with another solution. The vitreous is a gel-like substance that fills the middle portion of your eye.

How long does pneumatic Retinopexy take?

Pneumatic retinopexy is typically completed within 30 minutes. The procedure itself lasts about a minute, but most of the time is in numbing the eye, so that you feel no pain during the procedure.

Is eye injection painful?

Are these injections painful? Although most patients don’t experience pain, there can be a hot or cold feeling or a feeling of pressure which lasts for seconds. Often people see a swirling pattern or floating dark circles in their vision immediately after the injections. These tend to settle over minutes or hours.

How many eye injections do I need?

All of the studies now show that, on average, patients need between six to eight shots a year. Some patients may need fewer, some patients more, but long-term, sustained treatment is important for disease control.

Can I drive with a gas bubble in my eye?

You cannot fly in an airplane or drive above 1000 feet elevation if you have an air or gas bubble in your eye. Talk to your doctor about the duration of this restriction. When can I shower and wash my hair? You may shower or bathe when you get home, but avoid getting water in your eye during the first 2 weeks.

How long does C3F8 last?

The duration of the bubble depends on which gas is injected into the eye. The most commonly used gases are known as “SF6” and “C3F8”. SF6 gas stays in the eye for about one month; C3F8 gas remains for about two months.

How long does it take to heal from a vitrectomy?

You might have some pain in your eye and your vision may be blurry for a few days after the surgery. You will need 2 to 4 weeks to recover before you can do your normal activities again. It may take longer for your vision to get back to normal.

What is C3F8 in eye surgery?

C3F8 is a gas commonly used in eye surgery. Patients recruited will be divided into four groups: control group that receive none of the above drugs; one group that receives only tPA; one group that receives only C3F8; and one group that receives both.

What is the boiling point of C3F8?

Device Description: ISPAN Perfluoropropane (C3F8) is a liquified gas under pressure and is administered by injection into the vitreous cavity. It is Octafluoropropane (C3F8) from the Haloalkanes chemical family. The boiling point is -36.7°C (-34.1°F) and the vapor pressure at 20°C is 100 psig (pounds per square inch gauge).

What is ISPAN C3F8?

ISPAN Perfluoropropane (C3F8) is a liquified gas under pressure and is administered by injection into the vitreous cavity. It is Octafluoropropane (C3F8) from the Haloalkanes chemical family. The boiling point is -36.7°C (-34.1°F) and the vapor pressure at 20°C is 100 psig (pounds per square inch gauge).