Search

Background: Strabismus is a potential cause of ocular morbidity., Objective: The aim of this study was to determine the frequency, types of manifest strabismus and co-morbidities among patients attending a referral paediatric ophthalmology and strabismus clinic in Calabar, Nigeria., Methods: A retrospective review of case-notes of patients attending the paediatric ophthalmology and strabismus clinic from January 1, 2017 to December 31, 2019 was done. Collected data was analyzed using chi square test (or Fisher's Exact Test) and multivariate binary regression. A p-value of <0.05 was considered statistically significant., Results: Of the 4644 patients reviewed, 169 patients (3.6%) had strabismus during the study period but only 136 (80.4%) met the eligibility criteria for inclusion into this study. Most patients (89.0%) were aged below 16 years. Females (52.2%) were proportionately more. Sixty-three (46.3%) had one ocular comorbidity, 56(41.2%) had two while 16(11.8%) had three. The most common ocular comorbidity was amblyopia (31.6%), followed by hypermetropia (27.7%). Twenty-nine (21.3%) had systemic comorbidities. Sensory and infantile esotropia were the most common types; 35.3% and 32.4% respectively. Others included intermittent exotropia (16.2%) and sensory exotropia (6.6%). Primary strabismus was more common among those aged 16 years and above compared with those aged below 16 years (66.7% versus 57.0%), p=0.475. There were statistically significant relationships between strabismus and cataracts, retinoblastoma, hypermetropia, astigmatism among others. Amblyopia (AOR: 3.339; 95% CI: 1.100-10.131), hypermetropia (AOR: 10.615; 95% CI: 2.393-47.077), and myopia (AOR: 0.109; 95% CI: 0.016 to 0.732) were predictors of strabismus., Conclusion: The prevalence of strabismus in this study revealed a higher burden than previously reported in Nigeria. Some comorbidities serve as predictors of strabismus, and their presence may aid timely case finding. Treatment of causes of secondary strabismus may reduce the burden of avoidable causes of strabismus and associated visual loss., Competing Interests: The Authors declare that no competing interest exists, (Copyright © 2024 by West African Journal of Medicine.)

Aim: To determine the degree of visual loss associated with retinitis pigmentosa (RP) in Nigerians at first ophthalmic clinic presentation, Methodology: Multicenter, prospective, cross-sectional study in four collaborating retina clinics within Nigeria between January and December 2018. The primary outcome measure was the World Health Organization’s visual status classification at presentation. Clinical examination, including a Snellen’s visual acuity, refraction, anterior segment examination using a slit lamp biomicroscope, and dilated fundus examination using a +90D or +78D, was done in all consecutive RP patients. We analyzed the data using SPSS (version 22), P < 0.05., Results: Of 8614 patients seen within the study period, fiftyfour eyes of 27 patients diagnosed to have RP with a mean age of 44.1years ± 17.6 years (ranging between 5–73 years) constituted the study population. Eighteen (66.7%) were males and 9 (33.3%) females. The hospital-based prevalence of RP was 0.31%. Ten patients (37.0%) presented with myopia. RP was bilateral in all cases and non-syndromic. Bilateral low vision and blindness were noted in 44.4% and 22.2% of patients respectively., Conclusion: About a quarter of patients with RP presenting to the retina clinics would have some degree of visual morbidity. Educating eye care providers and patients about the disease would improve understanding, encourage early clinic visits, manage visual morbidity and enhance rehabilitation when necessary., Competing Interests: The Authors declare that no competing interest exists, (Copyright © 2021 by West African Journal of Medicine)