Aim: To review the ocular manifestations of Lassa fever.
Methods: Information about Lassa fever and other haemorrhagic fevers and their ocular manifestations from existing literature from journal publications, public health releases and internet search were analyzed.
Results: There is a paucity of literature on ocular findings in Lassa fever but it has been demonstrated that there is a high frequency of ocular findings in other viral haemorrhagic fevers such as West Nile Virus infection uveitis, retinal vasculitis, optic neuritis, subconjunctival haemorrhage, sixth nerve palsy, nystagmus, bilateral visual loss and congenital chorioretinal scarring; Dengue fever with ptosis, uveitis and retinal haemorrhages and macular oedema; Chikungunya with uveitis, retinitis, panophthalmitis, optic neuritis, keratitis, episcleritis, neuroretinitis, central retinal artery occlusion, lagophthalmos, and sixth nerve palsy; Rift Valley fever with macular or paramacular necrotizing retinitis, retinal haemorrhages, vitritis, optic disc oedema, and retinal vasculitis. Lassa fever has been reported to manifest with ocular discharge, ptosis, lid oedema, tearing, diffuse conjunctival injection, subconjunctival haemorrhage, uveitis, bilateral dendritic corneal ulcers in one case, flame shaped retinal haemorrhages and retinal oedema.
Conclusion: Lassa fever like other haemorrhagic fevers manifest with ocular features which include ptosis, conjunctivitis, subconjunctival haemorrhages, corneal ulcers, uveitis and retinitis