<prompt> A 67-year-old man complains of a lesion in his left eye. Physical examination reveals a triangular fold of vascularized conjunctiva growing horizontally into the cornea in the shape of an insect wing. Which of the following terms best describes this patients lesion?LoiasisOnchocerciasisPingueculaPterygium  <response>: Pterygium is a fold of vascularized conjunctiva that grows horizontally onto the cornea in the shape of an insect wing hence the name. It is often associated with a pinguecula conjunctival lump, choice C and frequently recurs after excision.Diagnosis: Pterygium 