{"id":9785,"date":"2026-09-01T14:06:15","date_gmt":"2026-09-01T14:06:15","guid":{"rendered":"https:\/\/siview.ai\/?post_type=faq&#038;p=9785"},"modified":"2026-09-01T14:06:15","modified_gmt":"2026-09-01T14:06:15","slug":"what-happens-if-a-patient-initially-indicates-a-preference-for-a-cylinder-but-later-achieves-better-visual-acuity-without-it","status":"publish","type":"faq","link":"https:\/\/siview.ai\/en\/faq-en\/what-happens-if-a-patient-initially-indicates-a-preference-for-a-cylinder-but-later-achieves-better-visual-acuity-without-it\/","title":{"rendered":"What happens if a patient initially indicates a preference for a cylinder but later achieves better visual acuity without it ?"},"excerpt":{"rendered":"<p>During astigmatism verification, SiVIEW does not rely solely on the cylinder in the initial prescription or on the preference expressed at the beginning of the test. The cylinder is retained only if it provides a real visual benefit. 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