![]() ConclusionsĪll 6 methods used in this study were effective for the mechanical dilatation of small pupils and didn’t affect the postoperative visual acuity and intraocular pressure in microcoria cataract phacoemulsification. PD was largest in group II (median value: 5.5 mm), which was significantly larger than other groups (P adjusted < 0.05). The ECDs were better at 6 months postoperatively in group III and V, median values: 2114/mm 2, 1961/mm 2. There were no significant statistical differences for the conditions of the eyes before surgery among six groups. The eyes’ condition before surgery and at 6 months after surgery were compared. One same doctor finished all cataract surgeries successfully. The best corrected visual acuity (BCVA), intraocular pressure(IOP), corneal endothelium cell density(ECD), pupil diameter(PD) of before and after surgery were compared. All cases were followed up at 1 week and 1, 3, 6 months after the surgery. 3.0 mm clear corneal incision were used in phacoemulsification. 99 microcoria cataract patients (120 eyes) were collected and were divided into 6 groups(20 eyes each group), and their pupils were dilated by bimanual stretching pupil (group I), pupil radial cut open(group II), mechanical pupil dilatation with iris-retractor hooks (group III), OASIS iris expander (group IV), and Malyguin-ring (Microsurgical company, America) (group V), B-HEX Pupil Expander (Med Invent Devics, India)(group VI),respectively. This was a prospective case–control study. To compare 6 methods for intraoperative pupil dilatation in eyes with insufficient pupil size during phacoemulsification.
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