Anterior chamber indices in a population-based study using the Pentacam

Hashemi, Hassan; Yekta, Abbasali; Khodamoradi, Farzad; Aghamirsalim, Mohamadreza; Asharlous, Amir; Assadpour, Mehrdad; Khabazkhoob, Mehdi

doi:10.1007/s10792-018-1037-5

Cited by 22 publications

(15 citation statements)

References 34 publications

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“…Though the follow-up time was less than 6 months and glaucoma drainage device surgery was included in the combined group, it remains a meaningful result. Old age has been associated with structural changes of scleral collagen ber and changes of ACD [40,41], therefore, some studies reported that age of patients may affect the refractive outcomes after cataract surgery [42,43]. Our study also supports this result, as old age appeared to be risk factor up to 12 months after phacotrabeculectomy.…”

Section: Discussionsupporting

confidence: 87%

Long-Term Refractive Outcomes After Combined Phacoemulsification and Trabeculectomy in Glaucoma Patients

Kang

et al. 2020

Preprint

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Background: To investigate long-term refractive outcomes after phacotrabeculectomy and to determine risk factors that may cause unstable refractive outcomes after phacotrabeculectomy in glaucoma patients.Methods: A total 120 eyes of 120 patients who had underwent uncomplicated phacotrabeculectomy (combined group) or phacoemulsification (phaco-only group) were included. Best-corrected visual acuity (BCVA), intraocular pressure (IOP) were measured before and after surgery, and anterior segment parameters including anterior chamber depth (ACD), lens vault (LV), and anterior vault (AV) measured using anterior-segment optical coherence tomography were compared between the two groups. The mean absolute error (MAE) at 3, 6, 12, and 24 months postoperatively were compared. Risk factors associated with unstable refractive outcomes (MAE ≥ 0.5) were investigated in the combined group.Results: In both groups, BCVA was improved and IOP was decreased significantly. MAE at 3, 6, 12, 24 months postoperatively were not significantly different between two groups. The risk factors for unstable refractive outcomes after 12 months of phacotrabeculectomy were old age and LV. Whereas, the only factor predicting unstable refractive outcome after 24 months of phacotrabeculectomy was LV. The cut-off value of LV for predicting unstable refractive outcome analyzed by the ROC curve was 0.855 mm.Conclusions: Phacotrabeculectomy may be an effective treatment with predictable long-term refractive outcomes similar to phacoemulsification in patients with glaucoma. However, elderly patients or patients with large LV may be predisposed to unpredictable postoperative refractive outcomes after phacotrabeculectomy.

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Section: Discussionsupporting

confidence: 87%

Long-Term Refractive Outcomes After Combined Phacoemulsification and Trabeculectomy in Glaucoma Patients

Kang

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…Though the follow-up time was less than 6 months, glaucoma drainage device surgery was included in the combined group, it remains a meaningful result. Old age has been associated with structural changes of scleral collagen ber and changes of ACD [40,41], therefore, some studies reported that age of patients may affect the prediction errors after cataract surgery [42,43]. Our study also supports this result, as old age appeared to be a risk factor up to 12 months after phacotrabeculectomy.…”

Section: Discussionsupporting

confidence: 87%

Long-term outcomes of prediction error after combined phacoemulsification and trabeculectomy in glaucoma patients

Kang

Sung

Heo

et al. 2021

Preprint

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Background: To investigate long-term outcomes of prediction error after phacotrabeculectomy and to determine risk factors that may cause unstable prediction error after phacotrabeculectomy in glaucoma patients.Methods: A total 120 eyes of 120 patients who had underwent uncomplicated phacotrabeculectomy (combined group) or phacoemulsification (phaco-only group) were included. Best-corrected visual acuity (BCVA), intraocular pressure (IOP) were measured before and after surgery, and anterior segment parameters including anterior chamber depth (ACD), lens vault (LV), and anterior vault (AV) measured using anterior-segment optical coherence tomography were compared between the two groups. The mean absolute error (MAE) at 3, 6, 12, and 24 months postoperatively were compared. Risk factors associated with unstable prediction error (MAE ≥ 0.5) were investigated in the combined group.Results: In both groups, BCVA was improved and IOP was decreased significantly. MAE at 3, 6, 12, 24 months postoperatively were not significantly different between two groups. The risk factors for unstable prediction error after 12 months of phacotrabeculectomy were old age and LV. Whereas, the only factor predicting unstable prediction error after 24 months of phacotrabeculectomy was LV. The cut-off value of LV for predicting unstable refractive error analyzed by the ROC curve was 0.855 mm.Conclusions: Phacotrabeculectomy may be an effective treatment with stable long-term outcomes of prediction error similar to phacoemulsification in patients with glaucoma. However, elderly patients or patients with large LV may be predisposed to unstable prediction error after phacotrabeculectomy.

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“…One possible reason is that the lens becomes more opaque and thicker when getting older, thus increasing the risk of glaucoma and affecting preoperative measurement of ocular biometrics. Moreover, age has been reported to affect the morphology of the Schlemm's canal (SC) and trabecular meshwork (TM) as well as the anterior chamber depth measurement, especially in patients with PACG ( 22 , 23 ). However, age showed little effect-quantity and was not indicated as a significant predictor in the final nomogram models.…”

Section: Discussionmentioning

confidence: 99%

Development and Evaluation of the Prognostic Nomogram to Predict Refractive Error in Patients With Primary Angle-Closure Glaucoma Who Underwent Cataract Surgery Combined With Goniosynechialysis

Guo

Huang

et al. 2021

Front. Med.

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Objective: To evaluate the accuracy of different intraocular lens (IOL) power calculation formulas and develop prognostic nomograms to predict the risk of postoperative refractive error in primary angle-closure glaucoma (PACG) patients.Methods: A total of 111 eyes with PACG underwent goniosynechialysis combined with phacoemulsification and IOL implantation were included. SRK/T, Barrett II, Hoffer Q, and Kane formulas were used to predict postoperative refraction. Prediction error (PE) and absolute predictive error (APE) produced by the four formulas were calculated and compared. An APE >0.50 D was defined as the event. Binary logistic regression analysis and prognostic nomogram models were conducted to investigate reliable predictors associated with postoperative refraction.Results: The Kane (−0.06 D) and Barrett II (−0.07 D) formulas had mean prediction error close to zero (p = 0.44, p = 0.41, respectively). The Hoffer Q and SRK/T produced significantly myopic outcomes (p = 0.003, p = 0.013, respectively). The percentage of eyes within ± 0.5 D was 49.5% (55/111), 44.1% (49/111), 43.2% (48/111), and 49.5% (54/111), for the Kane, Barrett II, Hoffer Q, and SRK/T formula, respectively. Nomogram showed that AL had the greatest impact on the refractive outcomes, indicating a shorter preoperative AL is associated with a greater probability of refractive error event. The area under the receiver operator curve (AUC) of the nomogram for the Kane, Barrett II, Hoffer Q, and SRK/T was 0.690, 0.701, 0.708, and 0.676, respectively.Conclusions: The Kane and Barrett II formulas were comparable, and they outperformed Hoffer Q and SRK/T in the total eyes with PACG receiving cataract surgery combined with goniosynechialysis. The developed nomogram models can effectively predict the occurrence of postoperative refractive error events.

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Anterior chamber indices in a population-based study using the Pentacam

Cited by 22 publications

References 34 publications

Long-Term Refractive Outcomes After Combined Phacoemulsification and Trabeculectomy in Glaucoma Patients

Long-Term Refractive Outcomes After Combined Phacoemulsification and Trabeculectomy in Glaucoma Patients

Long-term outcomes of prediction error after combined phacoemulsification and trabeculectomy in glaucoma patients

Development and Evaluation of the Prognostic Nomogram to Predict Refractive Error in Patients With Primary Angle-Closure Glaucoma Who Underwent Cataract Surgery Combined With Goniosynechialysis

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