<prompt> You have been referred a middleaged patient to rule out open angle glaucoma. Which of the following findings will help in the diagnosisCupping of the discDepth of anterior chamberVisual acuity and refractive errorAngle of the anterior chamber  <response>: At least two of the following three are required to make a diagnosis of POAG :-Raised IOP 21 mmHg on more than one occasion and a circadian variation in TOP 8 mmHg.Glaucomatous changes in optic disc including cupping of discVisual field changes. 