Femtosecond laser assisted phacoemulsification plus IOL implant: Toric IOL vs astigmatism keratotomy
Bibliographic record
Abstract
Aims/Purpose: This study aimed at comparing the clinical outcomes of femtosecond laser‐assisted cataract surgery (FSACS) performing astigmatic keratotomy (AK) and toric intraocular lens (IOL t ) implantation for astigmatism correction. Methods: Based on autorefractor and corneal topography, all patients underwent pre‐operative and postoperative examinations including comparatively assessing refractive astigmatism, best corrected visual acuity and corneal high order aberrations. Results: This retrospective case series comprised a total of 20 eyes (IOL t : AK = 10: 10) of 16 patients (mean age: 62.70 ± 1.89 years). Refraction status was 1.98 ± 0.22 in IOL t (0.75~3.00 D) vs 1.95 ± 0.23 in AK (0.55~3.08 D). The follow‐up periods 9.63 ± 1.15 months after surgery. Total corneal astigmatism (CAtot) were 1.73 ± 0.20 D in IOL t /2.28 ± 0.23 D in AK preoperatively and significantly ( p < 0.01/ p < 0.001) reduced to 0.80 ± 0.17 D in IOL t /1.13 ± 0.07 D in AK. The pre‐operative and postoperative reduction in astigmatism between IOL t (0.93 ± 0.32 D) and AK (1.15 ± 0.21) was not significantly ( p = 0.56) different. However, anterior corneal astigmatism (CAant) were 1.99 ± 0.21 D in IOL t /1.95 ± 0.23 in AK preoperatively and not significantly/significantly ( p = 0.36/ p < 0.05) reduced to 1.73 ± 0.18 D in IOL t /1.10 ± 0.18 D in AK. Regarding CAant, the pre‐operative and postoperative reduction in astigmatism between IOL t (0.36 ± 0.25 D) and AK (0.69 ± 0.21 D) was not significantly ( p = 0.3) different. Pre‐FSACS IOLt total corneal HOAs (0.47 ± 0.15) decreased, but not significantly, after FSACS IOLt (0.41 ± 0.11; p = 0.76). However, pre‐FSACS AK total corneal HOAs (0.19 ± 0.02) significantly increased after FSACS AK (0.29 ± 0.03; p < 0.01). Furthermore, the pre‐operative and postoperative changes in total corneal HOAs between IOL t (‐0.06 ± 0.04) and AK (0.10 ± 0.02 D) were significantly ( p < 0.01) different. Best corrected visual acuity (Snellen E) was preoperatively 0.42 ± 0.02 in IOL t /0.38 ± 0.02 in AK and significantly ( p < 0.001) increased to 0.82 ± 0.06 in IOL t /0.74 ± 0.07 in AK postoperatively. The preoperative and postoperative BCVA alteration was not significant between two groups (IOL t vs AK: 0.40 ± 0.04 vs 0.36 ± 0.07; p = 0.64). Conclusions: IOLt implantation efficient and harmless for correcting preoperative astigmatism in FSACS in a short period.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".