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Choroid thickness dependending on the anteroposterior eyeball size and age in healthy persons

Year: 2020, volume 16 Issue: №2 Pages: 575-578
Heading: Ophtalmology Article type: Original article
Authors: Balalin A.S., Khzardzhan Yu.Yu., Fokin V.P., Balalin S.V., Sarkisyan A.S.
Organization: S. Fyodorov Eye Microsurgery Federal State Institution
Summary:

The purpose of the study is to define the dependence of choroid thickness (CT) from age and anteroposterior eyeball size (APES) in healthy persons. Material and Methods. We analysed data on 62 patients (62 eyes) aged 25 to 78 without retina and/or optic nerve pathology (45.5±1.7, M±m). Anteroposterior size of the eyeball was from 21.39 to 28.75 mm (23.97±0.18 mm, M±m). The examination included determination of the best corrected visual acuity, optical coherence tomography and optic biometry. Choroidal thickness was measured on two B-scans (vertical and horizontal) in the projection of the fovea and at 24 points from the fovea (in the superior, inferior, nasal and temporal sections) with an interval of 500 urn from each other. Results. CT is predominantly thinner peripapillary and in the inferior section of retina (p<0.01). CT is inversely proportional to the anteroposterior eyeball size (p<0.01). Calculation formula and a chart map of normal values of the choroid thickness depending on APES are proposed. Dependence on age was statistically unreliable (p=0.68). Conclusion. A method for calculating individual values of the choroidal thickness depending on the anteroposterior eyeball size is proposed. This method can be applied in practice in the diagnosis of pachychoroid diseases.

Keywords: choroid, optical coherent tomography

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