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Comparison of surgically induced astigmatism (SIA) values using three Holladay incorporated method SIA calculators

Md Mustafa, Md Muziman Syah and Mustapa, Nurul Adabiah and Ab. Halim, Noorhazayti and Marzuki, Nazaryna and Musa, Azuwan and Muhammad, Noryanti and Che Azemin, Mohd Zulfaezal and Badarudin, Noor Ezailina (2019) Comparison of surgically induced astigmatism (SIA) values using three Holladay incorporated method SIA calculators. Journal of Physics: Conference Series, 1366. pp. 1-6. ISSN 1742-6588

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Postoperative residual astigmatism is one of the unsatisfying visual outcomes of phacoemulsification resulting from surgically induced astigmatism (SIA). Various SIA calculators have been introduced to assist surgeons in calculating SIA for toric intraocular lens (IOL) determination. The aim of this study was to compare SIA values calculated using three different Holladay incorporated method SIA calculators. A data set of 80 eyes from 72 subjects who had undergone uneventful phacoemulsification using less than 3 mm clear corneal incision technique were included in the study. The preoperative and postoperative K-readings were computed into the three online Holladay incorporated method SIA calculators which were the SIA Calculator version 1.1 (SIAC1.1); Single Case SIA Calculator (SCSIAC); and Panacea SIA Calculator version 8(6.0) (Panacea). The mean individual SIA values obtained from each calculator were compared. There were no significant differences in mean individual SIA between the calculators (p > 0.05). Pearson’s correlation coefficients for all compared calculators achieved 0.99. The ranges of 95% limit of agreement between calculators were too small and tight, ranged from -0.012 to 0.012 only. In conclusion, the SIAC1.1, SCSIAC and Panacea produced a comparable SIA value among calculators. Hence, either one can be used interchangeably.

Item Type: Article (Journal)
Additional Information: 4891/76152
Uncontrolled Keywords: surgically induced astigmatism, SIA, Holladay incorporated method, SIA calculators
Subjects: R Medicine > RE Ophthalmology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Allied Health Sciences
Kulliyyah of Allied Health Sciences > Department of Optometry and Visual Science
Kulliyyah of Dentistry
Kulliyyah of Dentistry > Department of Paediatric Dentistry and Dental Public Health
Depositing User: Dr. Md Muziman Syah Md Mustafa
Date Deposited: 12 Nov 2019 16:14
Last Modified: 16 Jun 2022 14:54
URI: http://irep.iium.edu.my/id/eprint/76152

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