You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is A 60 year old man underwent phacoemulsification surgery and placement of foldable intraocular lens in the left eye a year back . He now presents to OPD with complaints of hazy vision in that eye. There is no associated redness , pain or watering of eye. The most common cause is: and explain in detail?
1. Posterior capsular opacification- Most common complication of cataract surgery which usually present after 1 year of cataract surgery. 2.Neovascular glaucoma usually occurs in conditions which predisposes to hypoxia like DM and CRVO . 3. Chorioretinitis usually occurs in toxoplasma ,herpes, CMV ,TB and other infectious and autoimmune conditions. It does not occur as a complication of cataract surgery. 4. Cystoid macular edema can occur as a complication of cataract surgery, but it presents within 2-3 months of surgery.