The injection can also cause the eye to become very dry. This may be due to corneal abrasion: a scratch on the cornea (the clear glassy part of the eye). The eye can develop significant discomfort or severe pain about one hour or more after the injection. Pain in the hours following an eye injection There may be a bit of discomfort when the anaesthetic wears off, but this is usually mild. The injection should therefore be painless. The effect of the local anaesthetic normally lasts for about half an hour. Saline will be used to wash the eye after the injection. A drop of Betadine will still be used in the exact point the injection will be given. Chlorhexidine kills a smaller range of microbes than Betadine and there’s less evidence about how effective it is at preventing infection, so your specialist should make sure you fully understand the possible risks. If none of these changes help, they may talk to you about using a different antiseptic called chlorhexidine, which doesn’t contain iodine. They may use a different local anaesthetic, saline or lubricant drops. If you experience discomfort or pain after injections, tell your specialist or nurse. Pain during your eye injectionĪlthough a true allergic reaction to iodine is rare, some people find that it causes irritation to their eye or skin. Before the injection, the eye is numbed with local anaesthetic and povidone iodine (brand name Betadine) is used to clean the eye and the eyelids. The current recommended treatments for wet age-related macular degeneration (AMD), diabetic macular oedema (DMO), and retinal vein occlusion (RVO) require injections into the eye (intravitreal injections).
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