Most common symptom of posterior uveitis ?
**Core Concept**
Posterior uveitis refers to inflammation of the posterior segment of the eye, including the retina and choroid. The most common symptom of posterior uveitis is related to the visual disturbances caused by the inflammation.
**Why the Correct Answer is Right**
The correct answer is photopsia, which is the perception of flashes of light. This symptom occurs due to the inflammation and damage to the retina, leading to abnormal electrical activity in the retina. Photopsia is often described as seeing sparks, flashes, or lightning-like sensations in the visual field. The inflammation can also cause retinal detachment or scarring, leading to permanent vision loss.
**Why Each Wrong Option is Incorrect**
* **Option A:** Pain is a common symptom of anterior uveitis, but not typically associated with posterior uveitis.
* **Option B:** Blurred vision can occur in posterior uveitis, but it is not the most common symptom.
* **Option D:** Floaters are a symptom of posterior vitreous detachment, not posterior uveitis.
**Clinical Pearl / High-Yield Fact**
Photopsia is a classic symptom of posterior uveitis, and it is essential to recognize this symptom early to prevent permanent vision loss. In addition to photopsia, patients with posterior uveitis may also experience blurred vision, eye pain, and sensitivity to light.
**Correct Answer: C. Photopsia.