Short-Term Outcomes Using a Novel Femtosecond Laser-Assisted Keratotomy Nomogram to Manage Corneal Astigmatism During Phacoemulsification
Nguyen Truong,1 Brett Ernst,2 Gautam Mishra,2 Catherine Seeger,3 Ashley Sun,1 Amy Longenecker,1 Erik Lehman,4 Seth M Pantanelli1 1Department of Ophthalmology, Penn State College of Medicine, Hershey, PA, USA; 2Schein Ernst Mishra Eye, Harrisburg, PA, USA; 3Department of Ophthalmology, Jacobs School...
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Dove Medical Press
2025-02-01
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| author | Truong N Ernst B Mishra G Seeger C Sun A Longenecker A Lehman E Pantanelli SM |
| author_facet | Truong N Ernst B Mishra G Seeger C Sun A Longenecker A Lehman E Pantanelli SM |
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| description | Nguyen Truong,1 Brett Ernst,2 Gautam Mishra,2 Catherine Seeger,3 Ashley Sun,1 Amy Longenecker,1 Erik Lehman,4 Seth M Pantanelli1 1Department of Ophthalmology, Penn State College of Medicine, Hershey, PA, USA; 2Schein Ernst Mishra Eye, Harrisburg, PA, USA; 3Department of Ophthalmology, Jacobs School of Medicine & Biomedical Sciences, Buffalo, NY, USA; 4Department of Public Health Sciences, Penn State College of Medicine, Hershey, PA, USACorrespondence: Seth M Pantanelli, Department of Ophthalmology, Penn State College of Medicine, 500 University Drive, HU19, Hershey, PA, 17033-0850, USA, Tel +1717-531-8783, Fax +1717-531-5475, Email spantanelli@pennstatehealth.psu.eduPurpose: To evaluate the efficacy of a femtosecond laser assisted astigmatic keratotomy (AK) nomogram (FemtoAK.com) for correction of astigmatism during cataract surgery.Patients and Methods: Consecutive patients underwent cataract extraction with AKs and insertion of a non-toric intraocular lens. Eyes with greater than 0.5 D of against-the-rule (ATR) or 1.0 D of with-the-rule (WTR) or oblique (OBL) astigmatism were treated in accordance with the nomogram. Optical biometry and manifest refraction were checked pre- and one-month post-operatively. Outcome measures included correction index (CI), index of success (IOS), and proportion of eyes with less than 0.5 and 1.0 D of astigmatism.Results: Ninety-five eyes from 69 patients were included, of which 41 had ATR, 35 had WTR, and 19 had OBL astigmatism. Corneal CI (ATR = 0.86, WTR = 0.27) indicated a small and large under-correction of ATR and WTR astigmatism, respectively, while refractive CI revealed a near-ideal correction of WTR (ATR = 0.87, WTR = 1.02). The proportion of eyes with less than 0.5 and 1.0 D of refractive astigmatism increased from 28% and 54% pre-operatively to 56% and 92% post-operatively, respectively.Conclusion: The FemtoAK nomogram is effective at reducing corneal astigmatism at the time of cataract surgery. Astigmatic correction was more precise when evaluated by refractive rather than corneal measures.Keywords: arcuate incisions, astigmatism, FemtoAK, femtosecond laser, keratotomy |
| format | Article |
| id | doaj-art-0dd4c5b660b74b9cb7c0fd3c6f19aaf2 |
| institution | DOAJ |
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| language | English |
| publishDate | 2025-02-01 |
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| spelling | doaj-art-0dd4c5b660b74b9cb7c0fd3c6f19aaf22025-08-20T03:05:01ZengDove Medical PressClinical Ophthalmology1177-54832025-02-01Volume 19721731100649Short-Term Outcomes Using a Novel Femtosecond Laser-Assisted Keratotomy Nomogram to Manage Corneal Astigmatism During PhacoemulsificationTruong NErnst BMishra GSeeger CSun ALongenecker ALehman EPantanelli SMNguyen Truong,1 Brett Ernst,2 Gautam Mishra,2 Catherine Seeger,3 Ashley Sun,1 Amy Longenecker,1 Erik Lehman,4 Seth M Pantanelli1 1Department of Ophthalmology, Penn State College of Medicine, Hershey, PA, USA; 2Schein Ernst Mishra Eye, Harrisburg, PA, USA; 3Department of Ophthalmology, Jacobs School of Medicine & Biomedical Sciences, Buffalo, NY, USA; 4Department of Public Health Sciences, Penn State College of Medicine, Hershey, PA, USACorrespondence: Seth M Pantanelli, Department of Ophthalmology, Penn State College of Medicine, 500 University Drive, HU19, Hershey, PA, 17033-0850, USA, Tel +1717-531-8783, Fax +1717-531-5475, Email spantanelli@pennstatehealth.psu.eduPurpose: To evaluate the efficacy of a femtosecond laser assisted astigmatic keratotomy (AK) nomogram (FemtoAK.com) for correction of astigmatism during cataract surgery.Patients and Methods: Consecutive patients underwent cataract extraction with AKs and insertion of a non-toric intraocular lens. Eyes with greater than 0.5 D of against-the-rule (ATR) or 1.0 D of with-the-rule (WTR) or oblique (OBL) astigmatism were treated in accordance with the nomogram. Optical biometry and manifest refraction were checked pre- and one-month post-operatively. Outcome measures included correction index (CI), index of success (IOS), and proportion of eyes with less than 0.5 and 1.0 D of astigmatism.Results: Ninety-five eyes from 69 patients were included, of which 41 had ATR, 35 had WTR, and 19 had OBL astigmatism. Corneal CI (ATR = 0.86, WTR = 0.27) indicated a small and large under-correction of ATR and WTR astigmatism, respectively, while refractive CI revealed a near-ideal correction of WTR (ATR = 0.87, WTR = 1.02). The proportion of eyes with less than 0.5 and 1.0 D of refractive astigmatism increased from 28% and 54% pre-operatively to 56% and 92% post-operatively, respectively.Conclusion: The FemtoAK nomogram is effective at reducing corneal astigmatism at the time of cataract surgery. Astigmatic correction was more precise when evaluated by refractive rather than corneal measures.Keywords: arcuate incisions, astigmatism, FemtoAK, femtosecond laser, keratotomyhttps://www.dovepress.com/short-term-outcomes-using-a-novel-femtosecond-laser-assisted-keratotom-peer-reviewed-fulltext-article-OPTHarcuate incisionsastigmatismfemtoakfemtosecond laserkeratotomy |
| spellingShingle | Truong N Ernst B Mishra G Seeger C Sun A Longenecker A Lehman E Pantanelli SM Short-Term Outcomes Using a Novel Femtosecond Laser-Assisted Keratotomy Nomogram to Manage Corneal Astigmatism During Phacoemulsification Clinical Ophthalmology arcuate incisions astigmatism femtoak femtosecond laser keratotomy |
| title | Short-Term Outcomes Using a Novel Femtosecond Laser-Assisted Keratotomy Nomogram to Manage Corneal Astigmatism During Phacoemulsification |
| title_full | Short-Term Outcomes Using a Novel Femtosecond Laser-Assisted Keratotomy Nomogram to Manage Corneal Astigmatism During Phacoemulsification |
| title_fullStr | Short-Term Outcomes Using a Novel Femtosecond Laser-Assisted Keratotomy Nomogram to Manage Corneal Astigmatism During Phacoemulsification |
| title_full_unstemmed | Short-Term Outcomes Using a Novel Femtosecond Laser-Assisted Keratotomy Nomogram to Manage Corneal Astigmatism During Phacoemulsification |
| title_short | Short-Term Outcomes Using a Novel Femtosecond Laser-Assisted Keratotomy Nomogram to Manage Corneal Astigmatism During Phacoemulsification |
| title_sort | short term outcomes using a novel femtosecond laser assisted keratotomy nomogram to manage corneal astigmatism during phacoemulsification |
| topic | arcuate incisions astigmatism femtoak femtosecond laser keratotomy |
| url | https://www.dovepress.com/short-term-outcomes-using-a-novel-femtosecond-laser-assisted-keratotom-peer-reviewed-fulltext-article-OPTH |
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