Installing a central air conditioner costs on average $2650, although it can cost as much as $15,000. This installation cannot be considered a DIY project, and it is traditional for a homeowner to hire a contractor for the job. Cost breakdown.
If the light blue iris ring you are seeing is at or near the margin between the iris (colored part of your eye) and the sclera (white part) and forms a large ring around that margin it is likely to be a deposit of cholesterol. It does not damaging to the eye and does not interfere with vision.
inflammation: swelling and inflammation in the eye, often caused by infection, can cause eye floaters. deposits: crystal-like deposits may form in the vitreous and interfere with light passing from the front of the eye to the back. diabetic retinopathy: diabetes can damage the blood vessels that lead to the retina.