A 60 year old male patient operated for cataract 6 months back now complains of floaters and sudden loss of vision. The diagnosis is –
**Core Concept**
The patient's symptoms of sudden loss of vision and floaters 6 months post-cataract surgery suggest a potential complication of intraocular surgery, specifically related to the vitreous and retina.
**Why the Correct Answer is Right**
The most likely diagnosis in this scenario is a **vitreomacular traction (VMT)** or **vitreous detachment (VD)**, which can cause sudden vision loss and floaters. This condition occurs when the vitreous gel separates from the retina, leading to traction on the macula. The vitreous, being a clear gel-like substance, can cause floaters as it collapses and becomes more liquid. The patient's history of recent cataract surgery increases the risk of VMT or VD due to the manipulation of the vitreous during the procedure.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is likely a distractor, as there is no direct correlation between the patient's symptoms and a diagnosis of **epiretinal membrane (ERM)**. While ERM can cause vision problems, it is typically associated with a gradual decline in vision rather than sudden loss.
* **Option B:** **Macular hole** is a possible complication of VMT or VD, but it is not the primary diagnosis in this case. A macular hole would typically present with a more gradual decline in vision and central visual field defects.
* **Option C:** **Retinal detachment** is a serious condition that can cause sudden vision loss, but it is not the most likely diagnosis in this scenario. Retinal detachment often presents with more severe symptoms, such as flashes of light, floaters, and a "curtain" or "shadow" in the peripheral vision.
**Clinical Pearl / High-Yield Fact**
When evaluating a patient with sudden vision loss after cataract surgery, it is essential to consider the possibility of VMT or VD, as prompt diagnosis and treatment can help preserve vision.
**Correct Answer:** C.