Comparison of surgically induced astigmatism after superotemporal and superonasal clear corneal incisions in post phacoemulsification

Md Mustafa, Md Muziman Syah and Marzuki, Nazaryna and Mohd. Kamal, Khairidzan and Ab Halim, Noorhazayti (2018) Comparison of surgically induced astigmatism after superotemporal and superonasal clear corneal incisions in post phacoemulsification. In: 3rd Ophthalmology-Optometry Conference 2018, 10-12 Aug 2018, Aman Jaya Convention Centre, Ipoh, Perak, Malaysia.

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Abstract

Objective: To compare the surgically induced astigmatism (SIA) of 2.75mm superotemporal and superonasal clear corneal incisions in post phacoemulsification. Methodology:This comparative cross-sectional study evaluated 60 eyes of 56 Malaysian subjects. Those who attended at least six weeks of postoperative follow-up visit were recruited in this study. The phacoemulsification procedure was performed using sutureless clear corneal incisions of 2.75mm size by three ophthalmic surgeons of International Islamic University Malaysia Eye Specialist Clinic, Kuantan, Pahang, Malaysia. Two surgeons have performed superotemporal incisions on the right eye and superonasal incisions on the left eye, while one surgeon has performed superotemporal incisions on the left eye and superonasal incisions on the right eye. Postoperative keratometry was measured by IOLMaster 700, whereas the preoperative keratometry was retrieved from subjects’ medical record. The SIA was calculated through Holladay's method of vector analysis using SIA 2.1 calculator. Results: Total number of subjects in superotemporal and superonasal group were 34 and 26 with mean preoperative astigmatism of 0.79 ± 0.47 D and 0.74 ± 0.83 D respectively, whereas mean postoperative astigmatism were 1.01 ± 0.52 D and 0.68 ± 1.04 D respectively. Vector analysis result showed that mean SIA were 0.72 ± 0.45 D for superotemporal incision and 0.81 ± 0.44 D for superonasal incision groups. However, there was no statistically significant difference between these two incision groups (p > 0.05). Conclusion: The selected location of incision did not influence the SIA value in postoperative phacoemulsification among Malaysian eyes.

Item Type:	Conference or Workshop Item (Slide Presentation)
Additional Information:	4891/66698
Uncontrolled Keywords:	surgically induced astigmatism, SIA, superotemporal incision, superonasal inscision, clear corneal incisions,post phacoemulsification, cataract
Subjects:	R Medicine > RE Ophthalmology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Allied Health Sciences > Department of Optometry and Visual Science Kulliyyah of Dentistry > Department of Paediatric Dentistry and Dental Public Health Kulliyyah of Medicine > Department of Ophthalmology
Depositing User:	Dr. Md Muziman Syah Md Mustafa
Date Deposited:	08 Oct 2018 22:31
Last Modified:	22 Feb 2020 09:59
URI:	http://irep.iium.edu.my/id/eprint/66698

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