Fig. 8. The diagrams explain the photoreceptor disarrangement theory for metamorphopsia. (A) The photoreceptors are displaced centrifugally and arranged in a barrel shape in macular hole (MH), and pincushion distortion will result. (B) After ideal closure of MH, the photoreceptors return to their original position, resolving metamorphopsia. (C) After internal limiting membrane (ILM) removal to a small extent, the nasal parafovea is deformed due to contraction of the retinal nerve fibers (RNFs). Asymmetric elongation of the fovea results in less reduction of metamorphopsia. (D) When the ILM is removed to a large extent, the fovea is displaced to the optic disc while maintaining the rectangular configuration of the square grid. Perifoveal deformation is more prominent causing photoreceptor disarrangement and resulting in metamorphopsia. DD = disc diameter. Adapted from Park et al. [18].

J Retin 2024;9:1-9 https://doi.org/10.21561/jor.2024.9.1.1

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