What home monitoring instruction is given for ERM?

• A. Check your vision at home every day with both eyes using an Amsler grid
• B. Check your vision at home using one eye at a time with an Amsler grid, at least once every week
• C. Do not monitor vision at home
• D. Use a daily vision diary with no grid

Answer: (B)

Home monitoring for an epiretinal membrane focuses on using an Amsler grid to check each eye separately for metamorphopsia. Checking one eye at a time isolates distortions that may be present in that eye and helps detect changes that binocular viewing could mask. Doing this at least once a week provides timely detection between clinical visits while remaining practical for ongoing self-monitoring. If lines appear distorted, wavy, or missing, it signals possible progression and should be reported to the eye care provider promptly. Using both eyes together or keeping a diary without a grid doesn’t provide the reliable, eye-specific assessment needed to catch these changes early.