This series of photos is called fluorescein angiography. When you have fluorescein angiography, a yellow dye is injected into your arm which then passes through the blood vessels in your retina. This makes it easier to see the blood vessels in the photos. Ophthalmologist can then use the photos if laser surgery for diabetic retinopathy is required. This is normal, and will disappear after about a day.
Laser photocoagulation is one of the most common treatments for diabetic retinopathy.
In this kind of surgery, short spots of the laser's beam are directed at the retina to seal leaking blood vessels. This can help prevent retinal detachment. Laser surgery can usually be done in the ophthalmologist's office or outpatient surgery center. You may also have an injection of local anesthesia to numb the entire area around the eye. Often, topical or local anesthesia is all that's needed, but you and your surgeon may decide you need some medication to make you less anxious-as well.