Cinescan a b

Ocular examinations were performed at baseline, 1, 2, 3, 6 and 12 months after FCVB implantation. The arrangements of ocular examinations consist of VA with Snellen eye charts (transformed to logMAR) and IOP with Goldmann applanation tonometry (GAT; Haag-Streit AG, Köniz, Switzerlan), traditional slit lamp biomicroscopy (Nikon FS-2, Nikon Inc., Melville, NY), direct ophthalmoscopy, and fundus photography (TRC- 50EX; Topcon, Tokyo, Japan). A-scan ultrasound (CineScan A/B; Quantel Medical, Bozeman, MT), B-scan ultrasound (CineScan A/B; Quantel Medical, Bozeman, MT), noncontact specular microscopy (SP-3000P; Topcon, Tokyo, Japan), optical coherence tomography (OCT, Visante; Carl Zeiss Meditec, Dublin, CA), ultrasound biomicroscopy (UBM, SW-3200 Kinscan; Suoer, Tianjin, China) and were performed at baseline and 3 months after implantation.

Before the cataract surgery, patients underwent a thorough ophthalmologic examination, including a slit lamp evaluation, intraocular pressure measurement, ophthalmoscopy after mydriasis, as well as biometry and keratometry measurement. Axial length (AL) and anterior chamber depth (ACD) measurements were obtained from IOL-Master500 (Carl Zeiss Meditec, Jena, Germany) and A-scan ultrasonography (Cinescan A/B, Quantel Medical, France). The keratometry values (K1 and K2) were measured using autorefractor keratometer RK-F1 (Canon Co, Tokyo, Japan). The above ophthalmic parameters, as well as the age at cataract surgery, patient sex, and PCD were collected in this study.

After topical anesthesia with 0.5% proparacaine hydrochloride (Alcon), ocular axial length was measured using an A-scan ultrasonography (Cinescan A/B, Quantel Medical, Clermont Ferrand, France). The ultrasound frequency was 11 MHz. Sound velocities were assumed to be 1557.5 m/s for the anterior segment, 1723.3 m/s for the lens, and 1540 m/s for the vitreous humor [19 (link), 23 (link), 24 (link)]. The ultrasound data represented the mean of 10 repeated measurements.