驗光實務上，常使用調節靈活度測試來直接測調節能力的速度、持久力，間接測試調節反應，調節滯後和調節超前及雙眼視功能是否異常的測量，當然也是驗光師判斷眼鏡矯正及視覺功能的工具。
accommodative facility testing
High PRA values (>= 3.50 diopters) are
considered to be diagnostic of disorders involving accommodative excess. Those
with accommodative insufficiency typically have PRA values below −1.50
diopters.
High NRA values (above +2.50) might be
evidence to over minus, uncorrected hyperopia or latent hyperopia.
Acc fac normal” – if both -3.50, +2.00 and
-2.00 are cleared swiftly and consistently
Acc fac normal on plus, slow on -3.50,
fatigues to fail on -2”
Acc fac normal on plus, failed -3.50, cleared
-2 on cycles”
