There are multiple definitions:

1. somatosensory evoked response(English)

   • Electrophysiology

2. smooth endoplasmic reticulum(English)

   • RER
   • Cell biology

3. spherical equivalent refraction(English)

   • refers to hyperopia, emmetropia, and myopia
   • AL
   • Ophthalmology, Ethnicity
   • https://doi.org…opr.2021.100010