Which tests are used for ERM testing?

Which tests are used for ERM testing?

• A. Mac OCT, Fundus photo, Amsler
• B. Optical coherence tomography angiography, fluorescein angiography, cone dystrophy testing
• C. Fluorescein angiography, OCT, and Amsler grid
• D. Visual acuity testing alone

Answer: (A)

For ERM testing you want a combination of structural visualization, documentation, and functional assessment. Macular OCT provides high-resolution cross-sectional images that show the epiretinal membrane on the inner retina, any traction on the fovea, and distortion of retinal layers—this is the primary tool to confirm the membrane and gauge its severity. Fundus photography gives a clear surface image to document the membrane’s appearance and extent over time. The Amsler grid evaluates functional impact by revealing metamorphopsia or scotomas that patients notice in daily vision, helping track progression or treatment response. Visual acuity testing alone can show reduced vision but cannot reveal the membrane or quantify distortion. Fluorescein angiography or OCT angiography focus on retinal vasculature and are not routinely required for diagnosing ERM unless another vascular condition is suspected; cone dystrophy testing targets a different disorder. Therefore, the combination of macular OCT, fundus photography, and an Amsler grid best covers ERM testing.

For ERM testing you want a combination of structural visualization, documentation, and functional assessment. Macular OCT provides high-resolution cross-sectional images that show the epiretinal membrane on the inner retina, any traction on the fovea, and distortion of retinal layers—this is the primary tool to confirm the membrane and gauge its severity. Fundus photography gives a clear surface image to document the membrane’s appearance and extent over time. The Amsler grid evaluates functional impact by revealing metamorphopsia or scotomas that patients notice in daily vision, helping track progression or treatment response. Visual acuity testing alone can show reduced vision but cannot reveal the membrane or quantify distortion. Fluorescein angiography or OCT angiography focus on retinal vasculature and are not routinely required for diagnosing ERM unless another vascular condition is suspected; cone dystrophy testing targets a different disorder. Therefore, the combination of macular OCT, fundus photography, and an Amsler grid best covers ERM testing.