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        Anterior Segment Changes during Accommodation in Accommodative Esotropia

        Mustafa Koç,Hakan Halit Yaşar,Mehmet Murat Uzel,Salih Çolak,Irfan Durukan,Pelin Yılmazbaş 대한안과학회 2018 Korean Journal of Ophthalmology Vol.32 No.1

        To evaluate the anterior segment biometric parameters of non-accommodative and accommodativerefractive accommodative esotropia (RAE). Methods: Eighty-one eyes of 81 patients were included in this prospective, case-control study. The patientswere divided into three groups as follows: the RAE group (n = 31), the hypermetropia group (n = 25), and theemmetropia group (n = 25). Measurements were obtained in the non-accommodative (0.0 diopters) and accommodativestatus (-5.0 diopters) using a Pentacam HR. The anterior chamber depth (ACD), anterior chambervolume (ACV), pupil diameter (PD), and anterior chamber angle (ACA) were evaluated at all four quadrants. Results: The ACD, ACV and PD values in the RAE group were lower than those of the other groups in bothstates (p < 0.05). The ACD values were lower in the hypermetropia group than in the emmetropia group for thenon-accommodative status (p = 0.024) but were similar for the accommodative status (p = 0.225). PD and ACVvalues were lower in the hypermetropia group than in the emmetropia group in both states (non-accommodativestatus, p = 0.011 and p = 0.022; accommodative status, p = 0.026 and p = 0.034, respectively). Changes inACD, ACV and PD during accommodation (Δ) were not significant in the RAE group but were significant for theother groups (hypermetropia: ΔACD, p = 0.001; ΔACV, p = 0.001; ΔPD, p = 0.002; emmetropia: ΔACD, p < 0.001;ΔACV, p = 0.001; ΔPD, p < 0.001). These changes were significantly lower in the hypermetropia group than inthe emmetropia group (ΔACD, p = 0.012; ΔACV, p = 0.031; ΔPD, p = 0.034). Conclusions: The anterior chamber in RAE patients was shallower and the increase in convexity of the anteriorsurface or forward movement of the crystalline lens was more limited during accommodation in RAE.

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