Effect of the capsular tension ring on refractive outcome after phacoemulsification.
Purpose: To evaluate how capsular tension rings (CTR) affect refractive outcomes following cataract extraction by phacoemulsification complicated by zonular instability. Study design: Retrospective. Methods: In a retrospective case-control study, the 29 eyes of 29 patients with CTRs were compared with the 29 eyes of patients without zonular instability following routine phacoemulsification, with mean arithmetic refractive prediction error (ArRPE) and mean absolute refractive prediction error (AbRPE) as primary outcome measures. Results: A comparison of eyes with and without CTRs according to the SRK/ T formula revealed no statistically significant difference in ArRPE (0.52 vs. 0.45 D, p = 0.570) or AbRPE (0.52 vs. 0.55 D, p = 0.799). Postoperative hypermetropic shift occurred in most cases in both groups, although the mean difference between eyes with CTR (22/ 29) and without CTR (25/ 29) was not statistically significant (p = 0.315). Conclusion: Implanting CTRs did not consistently affect refractive outcomes versus routine phacoemulsification. Results suggest that intraocular lens power can be calculated as usual when CTRs are used. Abbreviations: CTR = capsular tension ring, ArRPE = arithmetic refractive prediction errors, AbRPE = absolute refractive prediction errors, IOL = intraocular lens, WTW = white-to-white, ACD = anterior chamber depths, AL = axial lengths, RPE = refractive prediction error.
['Saadet|Gültekin Irgat|GI|', 'Fatih|Özcura|Ö|']
D000368:Aged D000369:Aged, 80 and over D001699:Biometry D016022:Case-Control Studies D005260:Female D006801:Humans D007910:Lenses, Intraocular D008297:Male D008875:Middle Aged D018918:Phacoemulsification D012029:Refraction, Ocular D012189:Retrospective Studies D016896:Treatment Outcome D014792:Visual Acuity
capsular tension ring refraction phacoemulsification surgery