Unfortunately, the pharmaceutical drugs that doctors prescribe, often result in temporary symptom-relief, but remain in the body long after the prescription. Many antibiotics (and other pharmaceutical drugs) are sulfur-based (or "sulfa" or "sulphur") and do not leave the body after ingested. Instead they settle into different areas of the body, acting like glue in your tissues, and shutting down the body's lymph system and functioning of cells. It's very hard to detoxify synthetic sulfur out of the body.
Sulfur is also an aphrodisiac to fungus/yeast, and people with lots of sulfur in their body often have lots of issue with candida/yeast and/or arthritis/gout (as uric acid is a byproduct of high fungal growth). Sulfur-based drugs can show up in the eye as a yellow or orange color and sulfur likes to settle in the stomach and bowels area (directly around pupil) and in the brain tissue (11 o'clock to 1 o'clock).
In some of the pictures posted here, you can see large chunks of orange color in the iris (indicating suppressed function a particular part of the body) and orange around the perimeter of the iris (settlement in the lymph nodes). When people finally detoxify this out of their system, they tend to see orange stools, orange mucus, and orange urine and the orange color slowly disappears from the iris.
Schedule a full body detoxification consultation (includes iris reading) to start gaining more insight into the underlying causes of your health issues.