During a pre-travel health check, 12-year-old Quang was unexpectedly found to have nearly 5 diopters of astigmatism, despite never having worn glasses for many years.
Mr. Nhat, 36, who has had myopia in both eyes since age seven, now has a prescription of 10-12 diopters. Doctors diagnosed him with severe multiple refractive errors and recommended surgery.
A 32-year-old individual, who previously had good vision and never wore glasses, recently had an eye exam revealing a 1,5 diopter prescription for the right eye and 2 diopters for the left. Why does myopia appear in adulthood? (Thanh, Tay Ninh)
An, a three-year-old boy, has experienced rapidly worsening vision since he was one, with his prescription quickly increasing to 14 diopters, prompting doctors to diagnose congenital lens dislocation.
Farsightedness can emerge early, but many individuals only detect it after age 40, as the eyes age and accommodative ability declines, leading to blurred vision and eye strain.
