Hello It looks like sub conjunctival hemorrhage There is no treatment required It will resolve on its own in 2-3 week time

Good morning,thank you for posting the image. please do not worry. By the history and your picture it is probably subconjunctival hemorrhage, a small bleeding in the eye.. It may be due to small trauma unknowingly happened .eg,by nail or can occur spontaneously too. High blood pressure is sometimes associated with it. It will reduce on its own in few weeks time. You can take vitamin c tablets one a day for 2 weeks and also a prophylactic antibiotic eye drops like ofloxacin eye drops three times a day, for a week.. Hope this helps.