Título / Title

OCT ANGIOGRAPHY IN PATHOLOGICAL MYOPIA WITHOUT NEOVASCULAR MEMBRANE

Introdução / Purpose

Pathological myopia, or high myopia, encompasses eyes with spherical equivalent more than - 6D. Some patients with pathologic myopia develop a degenerative form of myopia, characterized by lattice retinal degeneration, scleral expansion and stifling, axial length increase, posterior staphyloma, lacquer cracks, choroidal attenuation and, in some cases, choroidal neovascular membrane.

Material e Método / Methods

Purpose: To describe the main qualitative findings of patients with Pathological Myopia using the OCT-A technology.
Methods: This was an observational, unmasked study conducted at a tertiary Institution. Were included patients with pathological myopia - spherical equivalent equal or greater than - 6 D and/or axial length greater than 26.50 mm.

Resultados / Results

Results: The mean spherical equivalent was -13.97 D (range, -6.25 to -24 D). Mean axial length was 28.25 mm (range, 25.94 to 31.5 mm). In the OCT finds, were observed an ellipsoid zone irregularity in 5 of 25 eyes. It was also observed foveosquisis in one eye and staphyloma of the posterior pole in 2 of them. Regarding the OCT-A finds, in 7 of 25 eyes (28%) revealed a high-flow network, here called Myopic Vascular Net (MVN), but neovascular pattern.

Discussão e Conclusões / Conclusion

Conclusion: The OCT-A seems to be a valuable tool in detecting early myopic vascular changes. However, its evolution needs to be investigated in further studies.

Palavras Chave

OCT-A; PATHOLOGICAL MYOPIA