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Magalasi owonera a 1.74 MR-174 FSV High Index HMC
Kawirikawiri, tikamanena za index ya resin lens, imachokera pa 1.49 – 1.56 – 1.61 – 1.67 – 1.71 – 1.74. Chifukwa chake mphamvu yomweyo, 1.74 ndiyo yopyapyala kwambiri, mphamvu ikakhala yayikulu, zotsatira zake zimakhala zoonekeratu.
