PURPOSE: To estimate the outpatient clinic burden and surgical workload related to glaucoma in Lagos, Nigeria. METHODS: A multicentre study involving the 2 tertiary eye institutions, 7 secondary eye centers with eye care facilities, and the largest private eye hospital in Lagos state, Nigeria. Data on outpatient department (OPD) visits were collected over a 4-week period, using a specially designed tally sheet. Theater records were examined in each hospital over a 1-year period (2009) for the number and types of glaucoma surgeries performed. RESULTS: A total of 6240 patients visited the OPD over the 4-week period, out of which 1577 (25.3%) were glaucoma patients. OPD visit per ophthalmologist were 274, 323, and 61, whereas glaucoma visits per ophthalmologist were 75, 70, and 23 in the tertiary, secondary, and private centers, respectively. Glaucoma surgeries constituted 8.6% of total surgeries (n=4050). Trabeculectomy with intraoperative 5-fluorouracil was the most common procedure (81.0%). Number of glaucoma surgeries per ophthalmologist per month in the tertiary, secondary, and private centers were 0.5, 0.9, and 1.4, respectively. Overall number of glaucoma surgery per ophthalmologist per month was 1. CONCLUSIONS: Glaucoma visits constitute a significant proportion of eye clinic visits in Lagos state, Nigeria, and therefore, necessary manpower, infrastructure, and equipments should be mobilized for its optimal management. Also, there is a relatively low output of glaucoma surgeries that needs to be further investigated and appropriate measures taken to manage it.