What might you notice?
Words may appear incomplete or straight lines may look wavy in the centre of your vision. One possible cause is a macular hole in the area of the retina responsible for detailed vision. Symptoms alone cannot establish the cause, because other eye conditions can produce similar blurring.
How is it assessed and treated?
An ophthalmologist examines the retina after dilating the pupil and may use optical coherence tomography (OCT). Some small holes are monitored, while other cases may need vitrectomy with a gas bubble placed inside the eye. The decision depends on the examination and the effect on vision.
What should you ask before travelling?
Ask about the size of the hole, the expected aim of surgery, any required head positioning afterwards and follow-up appointments. If a gas bubble is used, do not fly or receive nitrous oxide anaesthesia until the bubble has disappeared and your ophthalmologist has cleared you. Tell any anaesthesia team that the bubble is present.
Next step
See an ophthalmologist promptly for new distortion in central vision. Have your OCT scan and earlier reports ready when requesting help arranging a visit. A specific improvement cannot be guaranteed before assessment.
Source
US National Eye Institute: Macular Hole. General educational information; diagnosis and treatment are determined by your doctor.