Prevalence and Pattern of Eye Disorders Among Primary Schoolchildren in Abakaliki, Nigeria: A Cross-Sectional Study.

Background A child's learning ability depends on vision, and visual impairment negatively affects neurological, intellectual, and emotional development by limiting children's exposure to a range of experiences and information. This study aims to determine the prevalence and pattern of ocular morbidity among primary schoolchildren in Abakaliki and provide evidence that can be used in planning a school eye health program for the state. Methodology A school-based, cross-sectional study was conducted within the Abakaliki metropolis between January and April 2018 to determine the ocular health status of schoolchildren recruited using stratified random sampling. Data were analyzed using SPSS version 22 (IBM Corp., Armonk, NY, USA) and presented using descriptive statistics. Univariate analysis was performed to determine the association between dependent and independent variables, with the level of significance determined by a p-value <0.05 (95% confidence interval (CI)). Results A total of 553 schoolchildren aged 6-16 years were examined. The prevalence of eye disorders was 23.5%. Common disorders included refractive error (12.7%) and allergic eye disease (7.1%). Other findings included glaucoma suspect (15, 2.7%), infective conjunctivitis (1, 0.2%), amblyopia (3, 0.5%), cataract (1, 0.2%), and squint (1, 0.2%). The prevalence of visual impairment was 3.1%. Univariate analysis showed a significant association between ocular morbidity and attending private schools (95% CI = 6.5-11.1, p = 0.003). Conclusions Eye disorders such as uncorrected refractive error and allergic conjunctivitis were common among schoolchildren. School eye health programs can ensure that eye screening is done periodically, allowing for early detection, referral, and prompt treatment of eye diseases that can potentially cause visual impairment.

Toxic anterior segment syndrome following trabeculectomy with mitomycin C.

Objective: Toxic anterior segment (TASS) is a rare acute sterile anterior segment inflammation that typically develops within 12 to 24 hours after an anterior segment surgery. The purpose of this case report is to alert surgeons to the possibility of this complication following any anterior segment surgery, including trabeculectomy, and to highlight the possible etiologies and measures to prevent it. Patient and method: A 58-year-old male glaucoma patient was initially managed medically for primary open angle glaucoma with antiglaucoma medications. There was rapidly progressive glaucomatous optic nerve damage in his left eye within the following year, despite the use of antiglaucoma medications, hence the need for trabeculectomy. Result: The post-operative condition of the patient's eye was stormy with diffuse limbus-to-limbus corneal edema and profound Descemet's membrane folds, among other features of TASS, with associated deteriorating visual acuity. Conclusion: Although there is no documented report of TASS following trabeculectomy with mitomycin C, surgeons should be alerted to this possibility. Preventive measures include extreme care to avoid errors while preparing and administering diluted solutions, especially medications that are administered into the intracameral space.

Clinical Characteristics and Stage at Presentation of Glaucoma Patients in Sub-Saharan Africa.

PRCIS: The initial presentation of glaucoma varies meaningfully across SSA. A comprehensive strategy with regional customization based on local differences is needed to reduce glaucoma blindness in SSA. PURPOSE: To explore regional variations in the presentation of newly diagnosed glaucoma in Sub Saharan Africa (SSA). METHODOLOGY: This was a multicenter, cross-sectional study in which newly diagnosed, consecutive, glaucoma patients aged older than or equal to 18 years were recruited from 27 eye clinics in 10 countries throughout SSA. Demographic and ophthalmic examination data were collected. Glaucoma severity was based on optic nerve head and visual field assessment. Statistical analyses were performed using STATA version 14.0. RESULTS: Among 1214 enrolled patients with newly diagnosed glaucoma from Western, Eastern, and Southern Africa, the overall mean (SD) age was 59.9 (17.1) years. More than half of all patients (716/1178; 60.8%) presented with severe glaucoma in the worse eye, and one-third (36.9%) had severe glaucoma in both eyes. Primary open angle glaucoma was the commonest form of glaucoma in all regions (77.4%). A family history of blindness (260/1204, 21.6%) was common. Patients from Western Africa had lower mean presenting intraocular pressure (26.4 [11.1] mm Hg, P <0.001), but had worse glaucoma in the better eye based on mean cup-disc ratio (0.8; P <0.001) and mean visual field mean deviation [10.4 (8.4)] dB, P =0.016) compared with other regions. Exfoliation glaucoma was more common in Eastern Africa (30/170=17.7%, P <0.001) compared with other regions. CONCLUSION: The initial presentation of glaucoma varies meaningfully across SSA. A comprehensive strategy with regional customization based on local differences is needed to reduce glaucoma blindness in SSA.

Comparing posture induced intraocular pressure variations in normal subjects and glaucoma patients.

AIM: To compare the posture-induced variations in intraocular pressure (IOP) between the primary open angle glaucoma (POAG) and non-glaucomatous eyes. METHODS: A case-controlled age matched study was conducted in 55 successive newly diagnosed POAG and 56 non-glaucomatous patients seen in glaucoma clinic and general outpatient eye clinic in the Alex Ekwueme University Teaching Hospital, Abakaliki. The IOPs of eligible correspondents were measured with Perkin's hand-held tonometer in the sitting, supine flat and supine with pillow positions respectively. Measurement of IOP in each position was done after 15min of assuming such posture. RESULTS: The IOP difference between the sitting and supine flat position was significantly higher in the POAG than non-glaucoma subjects (7.68±2.08 vs 4.03±0.13 mm Hg, P<0.001). The IOP difference between the sitting and supine with pillow positions was 2.61±1.49 mm Hg for POAG and 1.44±0.70 mm Hg in non-glaucoma (P<0.001), while difference between supine flat and supine with pillow positions was 5.07±2.24 mm Hg in POAG and 2.59±0.66 mm Hg in non-glaucomatous patients (P<0.001). CONCLUSION: Greater variations in posture induced IOP occurred in POAG patients than non-glaucomatous. The posture induced IOP variation is lowest in the sitting position and highest in the supine flat position. Evaluation of posture induced IOP changes may be an important tool in the management of glaucoma.

Pediatric ocular injuries in a resource-deficient rural mission eye hospital in southeastern Nigeria.

INTRODUCTION: Pediatric ocular trauma is a significant worldwide problem of public health importance being a leading cause of non-congenital unilateral blindness. This study evaluated the proportion, type and causes of ocular injuries among children in a rural hospital of Nigeria. METHODS: Children (<16 years) presenting with ocular trauma at the Eye clinic of the Presbyterian Joint Hospital, Ohaozara, Ebonyi state, Nigeria, between November 2011 and May 2012 were studied. Participant's socio-demographics, type of trauma, cause of trauma, and occupation of parents were collected and analysed. RESULTS: The Proportion of ocular injuries was 26.4%. Injuries were more common among males (P=.041) and children from lower social class (P=.026). Injuries occurred more frequently during farm work (59.4%) and play (21.9%). The most common causes of injury were stick (34.4%) and stones (21.8%). CONCLUSION: The proportion of ocular injuries among children at the rural hospital is high. Most causes are preventable.