Optical Coherence Tomography-Based Quantification of Photoreceptor Injury and Recovery in Vogt–Koyanagi–Harada Uveitis

ABSTRACT

Purpose: To determine if the inflammatory composition of subretinal fluid in Vogt–Koyanagi–Harada (VKH) serous retinal detachments is predictive of photoreceptor injury, and to quantify photoreceptor recovery, following resolution of these detachments.

Methods: Optical density (OD) measurements of spectral-domain optical coherence tomography (SD-OCT) scans were used to derive the fibrinous index, a measure of the inflammatory composition of subretinal fluid. In order to assess photoreceptor status, photoreceptor outer segment (PROS) volume was measured from SD-OCT scans.

Results: The fibrinous index of subretinal fluid in VKH uveitis was strongly correlated with the PROS volume following resolution of subretinal fluid (r = –0.70, p = 0.006). Following fluid resolution, both PROS volume (p < 0.0001) and visual acuity (p = 0.0015) improved.

Conclusions: The fibrinous index of subretinal fluid during the acute stage of VKH can predict photoreceptor status following resolution of subretinal fluid. PROS volume is a useful measure of photoreceptor recovery in VKH.

Keywords:

• Optical coherence tomography
• outer segments
• photoreceptors
• uveitis
• Vogt–Koyanagi–Harada

DECLARATION OF INTEREST

The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.