Scleral-fixated and iris-fixated intraocular lens implantation or fixation:meta-analysis
Bibliographic record
Abstract
Scleral fixation and iris fixation are common intraocular lens (IOL) implantation techniques performed because of zonulopathy. There is a lack of consensus regarding their comparative efficacy and safety. This study aims to compare the efficacy and safety outcomes after scleral-fixated (SF) vs iris-fixated (IF) IOL implantation or fixation in adults. A systematic literature search was conducted on Ovid MEDLINE, Embase, and Cochrane CENTRAL from 2005 to 2020. 785 eyes from 2 randomized controlled trials and 9 nonrandomized studies were included. There was no significant difference in the mean corrected distance visual acuity at the final follow-up ( P = .52) or absolute change in spherical equivalent ( P = .88) between SF IOL and IF IOL implantation. The incidence of vitreous hemorrhage was significantly higher in the SF IOL group (risk ratio = 3.66, 95% CI, 1.16-11.55, P = .03). There were no differences in visual acuity and refractive outcomes between SF IOL and IF IOL implantation or fixation. Trade-offs in complications exist between the 2 techniques.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.008 | 0.018 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.015 | 0.028 |
| Bibliometrics | 0.004 | 0.005 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.003 | 0.001 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.005 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".