Asymptomatic Ophthalmomyiasis Interna Posterior with Central Pigment Accumulation in the Inner Retina

To report a case of ophthalmomyiasis interna posterior which was asymptomatic and had pigment clumps in the inner retina at the macula.

Single-centre, observational, retrospective case report.

A routine refractive error check-up for an asymptomatic 52-year-old Asian Indian woman, who had relied on glasses for 8 years, unfolded a captivating narrative within her retina. This coloured fundus photo unveils mid-peripheral retinal disease with multiple outer retinal atrophic tracts, circumlinear patterns, and intricately intertwined RPE atrophic tracts. These were hyper-autofluorescent on blue autofluorescence. The inferonasal periphery had two-disc diameters of pigmented retinal-choroidal atrophic scar. The macula revealed a collection of black intraretinal pigments in parafoveal areas. The distinct clinical presentation, marked by multiple tracts and unilateral manifestation without disc pallor, hinted at the intriguing possibility of self-resolved "Ophthalmomyiasis interna posterior."

The course of disease in ophthalmomyiasis interna posterior can be self-limiting and asymptomatic. The presence of inner retinal pigments at foveal and parafoveal areas, possibly due to pigment migration from the peripheral outer retinal tracts, is a rare presentation.