First Author: J.Zhao CHINA
Co Author(s):
Purpose:
To investigate feasibility of Tetraflex accommodative intraocular lens implantation in the incomplete lens capsular bag for traumatic cataract.
Setting:
Written communication
Methods:
17 eyes of 17 patients with traumatic cataract that were because of the perforating injuries were collected. The age range: 24 to 57 years, mean 39.24 ± 10.34 years old. There were the ruptures of the anterior lens capsule and incomplete lens capsular bag in the all eyes. 4 eyes of 4 patients associated with the posterior lens capsule rupture. Using SRK / T formula calculated the intraocular lens diopter and according to axial length to decide a residual value that was -0.65 ~-1.25D. Pacoemulsification and Tetraflex accommodative intraocular lens (U.S. Lenstec company) implantation were performed in 17 eyes. There were 2 eyes with posterior capsule rupture occurred vitreous loss. All eye lens haptics placed in the ciliary sulcus. Followed up for 6 to 12 months.
Results:
In the follow-up period, postoperative uncorrected distance visual acuity: 0.4 to 1.0, average: 0.68 ± 0.17. The naked eye near vision (near vision standard table, check the distance of 30cm): 0.5 ~ 1.0, average: 0.71 ± 0.20. Using negative lens method detected the postoperative amplitude of accommodation. After 1 week (1.91 ± 0.31) D (1.25 ~ 2.25 D), after 1 month (1.93 ± 0.34) D (1.75 ~ 2.25 D), after 6 months is (1.97 ± 0.33) D (1.50 ~ 2.50 D), compared with no significant difference between groups (P >0.05), All patients who read the newspaper with small V word were fluent.
Conclusions:
Tetraflex accommodative intraocular lens implantation in the eye that associated with incomplete lens capsular bag is feasible and the capacity of the accommodation is existent. The adjust source may be related to extraocular muscles contraction because of the eye converge reaction that arise from near reflex, thereby lead to increased vitreous cavity pressure and ciliary muscle contraction. These factors force the intraocular lens optic part move along. FINANCIAL DISCLOSURE?: No
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