A foreign body presents inside the eye (dust or sand) can cause abrasions to the eye's surface. Corneal abrasions are very uncomfortable and cause eye redness, eye pain and severe sensitivity to light. In the presence of a foreign body and/or corneal abrasions, the eye becomes more susceptible to infection. Don’t try to remove the foreign body yourself as you may cause even more injury to your eye. If it’s very painful to keep your eye open, simply close your eye and see your doctor as soon as possible.
Having splashed or sprayed unknown substances in the eye can be dangerous.
Acid can cause considerable redness and burning. It can be washed out fairly easily.
Alkali (toilet bowl cleaners, oven cleaner) don't cause as much immediate eye pain or redness as acids however they are much more dangerous.
If you have unknown substance in the eye, wash your eyes immediately with water for a minimum of 10 minutes. Then call and visit your eye doctor as soon as possible.
Presence of an off-center anterior chamber implant associated with an non reactive mydriasis following ocular trauma:
The first step is to make a corneal incision (a scleral tunnel is an alternative) to remove the anterior chamber implant (ICA). A large 4.5 to 5mm incision is required in order to extract the ICA. The next step is to insert a 3-piece posterior chamber implant and fix it to the sclera (here by a technique called "Yamanee" named after its inventor. The choice of the appropriate material is essential for the success of this technique, especially a smooth micro-forceps so as not to alter fragile haptics. 30-gauge, wide-lumen needles are also useful in order to facilitate the introduction of the haptics. Finally, haptics and needles must be positionned in a parallel way in order to succeed. Any rough handling risks damaging the haptics and affecting the correct centering of the implant.
In this specific case, pupilloplasty is the last stage of the surgery and will reduce significantly photophobia felt by the patient preoperatively.