Many people suffer from headaches, eye strain, or trouble reading despite having "normal" eyesight on a standard eye chart. This is because routine eye exams typically check only visual acuity (20/20 vision) and can miss underlying coordination problems. For instance, adults with convergence insufficiency who often complain of double vision and fatigue, yet they pass the visual acuity assessment. In such cases, orthoptist vision therapy  for adults may offer relief. Vision th