Surgically induced corneal refractive change following glaucoma surgery
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Bibliographic record
Abstract
PURPOSE: To compare surgically induced corneal refractive change following trabeculectomy with the nonpenetrating trabecular filtering surgeries with and without implant. SETTING: Department of Ophthalmology, Ege University School of Medicine, Izmir, Turkey. METHODS: A consecutive series of 34 patients (34 eyes) with uncontrolled open-angle glaucoma had trabecular filtering surgery. Patients were assigned randomly to receive viscocanalostomy (12 patients), nonpenetrating deep sclerectomy (NPDS) with T-flux implant (10 patients), and trabeculectomy (12 patients). Autokeratometry and computerized corneal videokeratoscopy with the Topcon KR-7000P autokeratorefractometer were performed preoperatively and 1 day and 1, 3, and 6 months postoperatively to analyze surgically induced keratometric and topographic astigmatism. RESULTS: Thirty patients (11 trabeculectomy, 11 viscocanalostomy, and 8 NPDS with nonabsorbable implant) completed the study. Mean patient age was 61.7 years +/- 10.9 (SD) (range 37 to 81) and did not differ among groups. Postoperative intraocular pressure (IOP) levels and visual acuity (logMAR values) did not differ among groups compared with preoperative levels. Average induced astigmatism was lower in the NPDS group than the trabeculectomy group at postoperative month 3 and 6 based on autokeratometry values (P =.023 and.042, respectively). Nonpenetrating surgeries resulted in less induced astigmatism in the early postoperative period and less against-the-rule shift over 6 months. CONCLUSION: Despite larger flap size and surgical area, nonpenetrating trabecular surgeries induced less astigmatism than trabeculectomy.
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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 | 0.002 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.002 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.002 |
| 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 it