Sunday Nnamdi Okonkwo

Outcome of Pterygium Excision with Conjunctival Autograft in a Tertiary Hospital in Southern Nigeria

Sunday Nnamdi Okonkwo, Dominica Ibhaduwede Adebayo & Ikenna Kizito Ogbonna · Asian Journal of Medicine and Health · 2022

Aim: To report the outcome of pterygium surgery with conjunctival autograft at a tertiary hospital in Southern Nigeria. Methods: This is a retrospective non comparative study of post operative outcomes in which the medical records of all patients who had pterygium excision with c...

Open access Research Article 10.9734/ajmah/2022/v20i1130526

Chemical Characterization and Phytochemical Profiling of Ethanol Leaf Extracts of Chromolaena odorata, Anacardium occidentale, and Phyllanthus amarus Harvested in Calabar, Nigeria

Chibuzor Onyinye Okonkwo, Gregory Elayeche Oko, Nelson Bikom Oyong, Sunday Nnamdi Okonkwo, Chizuruoke Oluomachi Chukwu & David-Oku Esien · South Asian Research Journal of Natural Products · 2025

Medicinal plants continue to constitute an invaluable source of natural bioactive chemicals with diverse Pharmaceutical Potentials. This study evaluated the chemical composition and phytochemical profile of ethanol leaf extracts of Chromolaena odorata, Anacardium occidentale, and...

Open access Research Article 10.9734/sarjnp/2025/v8i3213

Refractive Errors and Spectacle Use Behavior among Medical Students in a Nigerian Medical School

Emmanuel Olu Megbelayin, Uduak Edet Asana, Dennis George Nkanga, Roseline Ekanem Duke, Affiong Andem Ibanga, Bassey Archibong Etim & Sunday Nnamdi Okonkwo · Journal of Advances in Medicine and Medical Research · 2014

Aim: To determine the prevalence of refractive errors and spectacle use behavior among medical students in University of Calabar Teaching Hospital, Nigeria. Study Design: Cross sectional study. Place and Duration of Study: Department of Ophthalmology, University of Calabar Teachi...

Open access Research Article 10.9734/BJMMR/2014/7518