CENTRAL CORNEAL THICKNESS VARIATIONS FOLLOWING PHACOEMULSIFICATION: A PRE- AND POST-SURGICAL ANALYSIS
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Keywords
Cataract, phacoemulsification surgery, central corneal thickness
Abstract
Background: Cataract is the most prevalent cause of blindness worldwide, with cataract-related blindness being especially prevalent in low-income countries. However, performing surgery on a cataract that has advanced to a hypermature and cloudy state is challenging and carries a higher risk of postoperative complications, including corneal edema.
Objective: To determine the mean change in central corneal thickness after phacoemulsification surgery.
Material And Methods: This prospective observational study was conducted at the cataract clinic of Shaheed Mohtarma Benazir Bhutto Medical College Lyari and Sindh Government Lyari General Hospital, Karachi, over a six-month period from October 2018 to March 2019. Patients aged 40 to 80 years with cataracts, and no associated ocular conditions such as uveitis, glaucoma, subluxated lens, or pseudo-exfoliation (PXF) as assessed by slit lamp examination, were included. Both genders were considered. Selected cases were referred to the ward for preoperative assessment and central corneal thickness (CCT) measurement using ultrasound pachymetry, first by the principal investigator and then by a senior ophthalmologist. The final decision regarding phacoemulsification surgery was made by the senior ophthalmologist. CCT was measured again one day post-surgery and recorded on a CCT Assessment Proforma.
Results: Overall 65 patients were studies. In terms of gender, the sample of study consists of 31 males (47.6%), and 35 females (52.4%). On the central corneal thickness comparison before and after surgery, thickness was 538.2+34.16 before surgery, while after surgery it was found 578.83+29.11 with significant difference p-value 0.065.
Conclusion: Study revealed that the mean central corneal thickness increased after phacoemulsification surgery. Due to the small sample size and the limited 24-hours follow-up period, these results cannot be considered as finally conclusive and larger-scale studies are needed to confirm the findings.
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Dr. Asma Shams
Assistant Professor of Ophthalmology, Liquate Medical & Dentistry College & Consultant ophthalmologist Sessi Landhi Hospital Karachi
Dr. Narain Das
Associate Professor of Ophthalmology SMBB Medical College & Lyari General Hospital Karachi
Dr. Jai Kumar
Consultant Ophthalmologist, SMBB Medical College & Lyari General Hospital Karachi.
Dr. Ikramuddin Indhar
Consultant Ophthalmologist, Social Security Landhi Hospital Karachi.
Dr. Shehla Dareshani
Professor of Ophthalmology SMBB Medical College & Lyari General Hospital Karachi
Dr. Mohammad Nasir Bhatti
Professor and HOD, departments of Ophthalmology SMBB Medical College & Lyari General Hospital Karachi