_____________________________________________________________________________________________________ *Corresponding author: E-mail: fchukwuka@yahoo.com; Ophthalmology Research: An International Journal 11(4): 1-7, 2019; Article no.OR.54095 ISSN: 2321-7227 Systemic Disease Comorbidities among Ophthalmic Patients in Nigeria: Implications for Preventive Ophthalmology Ireju Onyinye Chukwuka 1* and Chinyere Nnenne Pedro-Egbe 1 1 Department of Ophthalmology, College of Health Sciences, University of Port Harcourt, Nigeria. Authors’ contributions This work was carried out in collaboration between both authors. Author CIO designed the study, performed the statistical analysis, wrote the protocol and wrote the first draft of the manuscript. Author PECN managed the analyses of the study and the literature searches. Both authors read and approved the final manuscript. Article Information DOI: 10.9734/OR/2019/v11i430132 Editor(s): (1) Dr. Ahmad M Mansour, Professor, Department of Ophthalmology, American University of Beirut, Lebanon. Reviewers: (1) Sevil Karaman Erdur, Istanbul Medipol University, Turkey. (2) Gabor Nemeth, Borsod-Abaúj-Zemplén County Hospital and University Teaching Hospital, Hungary. (3) Italo Giuffre, Catholic University of Rome, Italy. Complete Peer review History: http://www.sdiarticle4.com/review-history/54095 Received 07 November 2019 Accepted 13 January 2020 Published 17 January 2020 ABSTRACT Background/Aim: Quite often patients who are refracted in our clinics have other ocular or systemic conditions that may affect the result or delay the issuance of spectacle corrections – for instance poorly controlled diabetic patients may have to wait for months to achieve better control of their condition. These associated comorbidities may require medical or surgical intervention before spectacles are ordered. The aim of this study is to determine the systemic comorbidities that exist in ophthalmic patients attending the Nigerian National Petroleum Corporation (NNPC) Eye Clinic in Port Harcourt, Nigeria. Methodology: This was a descriptive cross-sectional study in which adult patients who presented in the clinic for change of glasses within the stipulated period of the study were included. They were interviewed to get the relevant information and the data retrieved for each patient included baseline information such as age, gender, unaided visual acuity, visual acuity with their last correction if any as well as co-existing ocular or systemic pathology. The collected data was subsequently analysed using Predictive Analysis Software version 20. Original Research Article