Immediately sequential bilateral cataract surgery: an academic teaching center's experience
Bibliographic record
Abstract
PURPOSE: To evaluate the safety and outcomes of immediately sequential bilateral cataract surgery (ISBCS) at a Canadian academic teaching center. SETTING: Tertiary university teaching hospital of Laval University, Quebec City, Canada. DESIGN: Retrospective cohort study. METHODS: 2003 consecutive patients (4006 eyes) who underwent ISBCS under topical anesthesia from January 2019 to December 2019 were included. All charts were retrospectively reviewed. Outcome measures included intraoperative and postoperative complications, postoperative uncorrected distance (UCVA) and pinhole (PHVA) visual acuities, and autorefraction measurements. RESULTS: 4006 eyes from 1218 (60.8%) female and 785 (39.2%) male patients with a mean age of 74 ± 8 years had a mean preoperative visual acuity of 0.503 logMAR (Snellen 20/63). The mean axial length was 23.53 ± 1.37 mm. Most eyes had monofocal intraocular lenses (IOLs) implanted (n = 3738, 93.3%) followed by toric (n = 226, 5.6%), multifocal (n = 25, 0.6%), and multifocal toric (n = 17, 0.4%) IOLs. Intraoperative complications included 14 (0.3%) posterior capsule ruptures with 5 (0.1%) requiring sulcus IOL placement, and 7 (0.2%) partial zonulysis, with 3 requiring capsular tension rings (0.07%). There were no cases of endophthalmitis or toxic anterior segment syndrome. Mean 5-week postoperative UCVA was 0.223 (Snellen 20/33), PHVA was 0.153 (Snellen 20/28) with a mean spherical equivalent of -0.21 diopters. CONCLUSIONS: ISBCS performed following International Society of Bilateral Cataract Surgeons recommended guidelines is a safe procedure. This cohort of 4006 eyes had very few complications, with none attributable to the surgery being done bilaterally. The UCVA, PHVA, and refractive outcomes were good.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.003 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.003 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.003 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".