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  • Title: Choroidal thickness in macular telangiectasia type 2.
    Author: Chhablani J, Kozak I, Jonnadula GB, Venkata A, Narayanan R, Pappuru RR, Rao PS.
    Journal: Retina; 2014 Sep; 34(9):1819-23. PubMed ID: 24896138.
    Abstract:
    PURPOSE: To assess the choroidal thickness changes in eyes with macular telangiectasia Type 2 and their relationship with the integrity of outer retinal structures and visual acuity. METHODS: This is a prospective observational study that included 81 eyes (41 subjects) with macular telangiectasia Type 2, including 21 women who underwent enhanced depth choroidal imaging. The choroidal thickness measurements were made at the fovea and at 5 points with an interval of 500 μm in both directions, nasal and temporal from the fovea, and were compared with age-matched healthy subjects. Masked observers assessed the outer retinal structure integrity. Stepwise regression was used to find the relationship between age, spherical equivalent, central macular thickness, integrity of the inner segment/outer segment junction, external limiting membrane integrity, and subfoveal choroidal thickness (SFCT). RESULTS: The mean age of the subjects was 55.2 ± 7.8 years in study subjects. The mean SFCT was 274.6 ± 45.7 μm. There was no significant difference between the SFCT in eyes with macular telangiectasia Type 2 and age-matched healthy subjects (P = 0.38). There was no correlation between the visual acuity (r = 0.008); integrity of inner segment/outer segment (r = 0.54); external limiting membrane (r = 0.47); central macular thickness (r = 0.31) and SFCT. CONCLUSION: Choroidal thickness did not vary between eyes with macular telangiectasia Type 2 and age-matched healthy subjects. There was no correlation between SFCT and visual acuity, and integrity of the outer retinal structures and central macular thickness.
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