Abstract
Importance: Little evidence exists for prediction error in iris-sutured intraocular lenses. Background: To determine the magnitude of prediction error in iris-sutured intraocular lenses, associated factors and their long-term stability. Design: Retrospective, nonrandomized, noncomparative case series conducted at the Wilmer Eye Institute (Baltimore, Maryland, United States). Participants: Adult patients with subluxated intraocular lenses that underwent iris-suture fixation between January 2000 and December 2014 by a single surgeon. Pregnant women, children (below the age of 18) and cases with follow-up under 1 month were excluded. Methods: Prediction error was calculated in 60 eyes and survival analysis was performed on 99 eyes. Main Outcome Measures: Prediction error (the difference between the postoperative manifest refraction in spherical equivalent and the spherical equivalent predicted by the Barrett Universal II, Holladay 2 and SRK/T formulas), preoperative and postoperative distance-corrected visual acuity, manifest refraction, frequency of postoperative complications and time until re-subluxation. Results: Mean prediction error using the Barrett formula was −0.35 ± 1.0 D. Higher axial length (≥25.5 mm) was associated with greater prediction error (−0.72 ± 1.11 D vs −0.18 ± 0.91 D, P =.048). Twelve re-subluxations occurred over a mean follow-up period of 30.28 ± 41.86 months. The predicted 50% survival of iris-sutured lenses was 114.25 months. Conclusions and Relevance: Iris-suture fixation may require moderate lens power adjustment to compensate for prediction error, especially in eyes with higher axial length. Longer follow-up demonstrates that iris-suture fixation remains a viable technique, yet re-subluxations require routine monitoring of such eyes.
Original language | English (US) |
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Pages (from-to) | 1175-1182 |
Number of pages | 8 |
Journal | Clinical and Experimental Ophthalmology |
Volume | 48 |
Issue number | 9 |
DOIs | |
State | Published - Dec 2020 |
Keywords
- axial length
- dislocated crystalline lens
- intraocular lens (IOL)
- lens subluxation
- prediction error
ASJC Scopus subject areas
- Ophthalmology