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Comparison of outcomes of primary and secondary implantation of scleral fixated posterior chamber intraocular lens

¹ Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong Eye Hospital, Kowloon, Hong Kong, People’s Republic of China
² Departments of Ophthalmology, Queen Mary Hospital and the Hong Kong Sanatorium and Hospital,.Hong Kong, People’s Republic of China

Correspondence to:
Correspondence to:
Dr Alvin K H Kwok
Department of Ophthalmology, Hong Kong Sanatorium and Hospital, 2 Village Road, Happy Valley, Hong Kong; alvinkwok{at}hksh.com

ABSTRACT
Aim: To assess and compare the results of primary and secondary implantation of scleral fixated posterior chamber intraocular lens (SFIOL).

Methods: The medical records of a consecutive series of 55 eyes of 55 patients with SFIOLs implanted during (group 1) or after (group 2) complicated senile cataract surgery were retrospectively reviewed and analysed.

Results: There were 30 and 25 eyes in group 1 and 2, respectively. Follow up was from 6 to 36 months. Mean logMAR postoperative best corrected visual acuity in group 1 was not significantly different (0.50 (SD 0.36)) from that of group 2 (0.36 (0.21)) (p = 0.109). Postoperative best corrected visual acuity of 6/12 or better was achieved in 58.6% and 76.0% in group 1 and 2, respectively. The difference was not statistically significant (p = 0.177). In group 1, 25 (83.3%) eyes had a total of 55 early complications, while in group 2, 16 (64%) eyes had 26 early complications (p = 0.028). The difference in early complication was statistically significant. For late complication after 1 month, 21 (70.0%) eyes had a total of 37 complications in group 1, while 13 eyes (52.0%) had 19 complications in group 2 (p = 0.077). The difference in late complication was not statistically significant.

Conclusion: Secondary implantation of SFIOL after cataract extraction seems to have a lower early complication rate than primary implantation in complicated cataract extraction although the final visual acuity and late complication rate are not significantly different.

Keywords: implantation; intraocular lens

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