Abstract:

Objective   To evaluate the occurrence of posterior vitreous detachment (PVD) in high myopia patients’ cataract surgery with Bigbag intraocular lens implantation. Methods   Sixty-six eyes in 38 high myopia patients received phacoemulsification to remove cataract. Then Bigbag intraocular lens were implanted into capsular bag. Pre-operative and post-operative best uncorrected distance visual acuity (BUDVA), best corrected distance visual acuity(BCDVA), refractive status were collected. The axial length of the eyeballs and the distance from the central of posterior capsule to the retina were measured by A-mode ultrasound. Occurrence of PVD was evaluated by B-scan ultrasonography and Non-contact slit lamp lenses. Results   Six months after the operations, BUDVA and BCDVA were significantly improved compared with those pre-operatively, while the spherical diopter was significantly decreased. But the axial length had not significantly changed. The distance from the central of posterior capsule to retinal became longer than that before the operations, with the average margin for distance variation of (1.56±0.41)mm. Pre-operatively, PVD was detected in 45 eyes (68.18%). Of the 21 eyes without PVD before the operation, 14 eyes (66.67%) developed PVD post-operatively. No retinal detachment was detected. Conclusion   Bigbag intraocular lens implantation is safe and effective for high myopia eyes with cataract. The incidence of PVD in such patients is relatively low.

Key words: Posterior vitreous detachment, Cataract, High myopia, Bigbag intraocular lens