June 2015
Volume 56, Issue 7
Free
ARVO Annual Meeting Abstract  |   June 2015
Temporal choroidal hump in the Swept-Source OCT choroidal thickness profile of a healthy population.
Author Affiliations & Notes
  • Jorge Ruiz-Medrano
    Hospital Universitario Clinico San Carlos, Madrid, Spain
  • Ignacio Flores-Moreno
    Department of Ophthalmology, Castilla La Mancha University. Albacete. SPAIN, Albacete, Spain
  • Javier A Montero
    Pío del Río Hortega University Hospital, Ophthalmology Unit. Valladolid. SPAIN, Valladolid, Spain
  • Jose M Ruiz-Moreno
    Department of Ophthalmology, Castilla La Mancha University. Albacete. SPAIN, Albacete, Spain
  • Footnotes
    Commercial Relationships Jorge Ruiz-Medrano, None; Ignacio Flores-Moreno, None; Javier A Montero, None; Jose M Ruiz-Moreno, None
  • Footnotes
    Support None
Investigative Ophthalmology & Visual Science June 2015, Vol.56, 5287. doi:
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      Jorge Ruiz-Medrano, Ignacio Flores-Moreno, Javier A Montero, Jose M Ruiz-Moreno; Temporal choroidal hump in the Swept-Source OCT choroidal thickness profile of a healthy population.. Invest. Ophthalmol. Vis. Sci. 2015;56(7 ):5287.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract
 
Purpose
 

The choroid and its involvement in a variety of ocular pathologies has been the subject of intensive study during the last few years. The purpose of this study is to describe choroidal thickening temporal to the fovea in the horizontal macular choroidal thickness (CT) profile in a healthy population using swept-source optical coherence tomography (SS-OCT).

 
Methods
 

Cross-sectional, non-interventional study. 276 eyes from 154 healthy patients, with spherical equivalent (SE) ±3D were scanned using a SS-OCT (Topcon Corporation, Japan). The presence of choroidal thickening (hump) in the analysis of the horizontal macular CT profile was recorded and the distance to the fovea and CT was manually measured. The hump was defined as an evident choroidal thickening compared to the two adjacent measured points by SS-OCT without any other relevant choroidal finding.

 
Results
 

Choroidal hump was found in 36 eyes (12.8%). All the humps were found in the temporal sector, with a mean distance to the fovea of 4427.3±627.9 µm (range 2531 to 5492) with a mean hump CT of 372.1±76.8 µm (range 168 to 538). Mean age of the patients with hump was 16±19 years (range 4 to 82) vs. 36±25 years (range 3 to 95) in the patients without hump (p=0.000; Student t test for unpaired data). A thicker temporal CT was noted in the hump group.

 
Conclusions
 

Temporal choroidal humps can be considered normal variations without clinical significance. This focal increase in temporal CT is more frequent in younger patients, and it can be explained by the reduced scleral stiffness in younger age and the traction applied by the insertion of the inferior oblique muscle.  

 
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