CHOROIDAL THICKNESS CHANGES IN A PATIENT DIAGNOSED WITH CENTRAL SEROUS CHORIORETINOPATHY DURING FOLLOW-UP FOR PACHYCHOROID PIGMENT EPITHELIOPATHY

Purpose To evaluate chronological changes in choroidal thickness in a patient with pachychoroid pigment epitheliopathy (PPE) who was later diagnosed with central serous chorioretinopathy (CSC) during follow-up. Methods Case report. Results A 43-year-old man complained of metamorphopsia in the left eye. Funduscopy showed several punctate white subretinal lesions at the macula, but no macular serous retinal detachment in the left eye. Retinal pigment epithelium abnormality without serous retinal detachment at the macula on optical coherence tomography and choroidal vascular hyperpermeability on indocyanine green angiography suggested PPE in the left eye. Macular lesions disappeared with no treatment. Twenty-five months after the initial visit, PPE recurred in the left eye. Thirty-five months after the initial visit, the patient was diagnosed with CSC in the left eye. Macular serous retinal detachment spontaneously resolved. In the eye with PPE and CSC, the choroid was consistently thicker than that in the fellow eye during follow-up. The choroid became thicker during the alternate onsets of PPE and CSC and thinner after regression of these diseases. Conclusion These results suggest that PPE and CSC overlap clinically and choroidal thickening is involved in the pathogenesis of both diseases.