<prompt> A relatively newer agent latanoprost is now being used. Which of the following statements is true regarding this agent?It is PGF2a derivative used in glaucomaIt is selective a1 blocker used in benign hyperophy of prostateIt is a 5a reductase inhibitor used to reduce the size of enlarged prostate glandIt is a PGE2 analogue used intravaginally for cervical priming  <response>: -Latanoprost is PGF2 alpha derivative. -It is drug of choice for primary open angle glaucoma. -Heterochromia iridis and hyperichosis are major ocular adverse effects of latanoprost. 