J Korean Ophthalmol Soc.
2002 Mar;43(3):478-491.
Clinical Usefulness of Infrared image for Subretinal Structure in Chorioretinal Disease
- Affiliations
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- 1Department of Ophthalmology, KyungHee University Hospital, Korea. hwkwak@khmc.or.kr
Abstract
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PURPOSE: Scanning laser ophthalmoscope (SLO) has improved Infrared (IR) imaging. Since greater penetration of IR light permitted better visualization of subretinal structures, we evaluated chorioretinal layer in various chorioretinal dieases with SLO.
METHODS
Cases of central serous chorioretinopathy (CSC), drusen, age-related macular degeneration (AMD), Vogt-Koyanagi-Harada disease, MEWDS (multiple evanesant white dot syndrome) and inflammatory choroiditis, toxoplasmosis, Stargardt's disease, proliferative diabetic retinopathy (PDR) and submacular hemorrhage were included. We used SLO (101, Rodenstock, Germany) for IR image and compared argon laser image with monochromatic IR image (780 nm wave length).
RESULTS
The demarcation and extent of serous retinal detachment and macular star were more distinct in IR image. Small drusen, subretinal deposit and RPE atropy which could not be seen in argon green laser image were visible and appeared brightly with high reflectance in IR image. The CNV membrane which was not seen in full extent in argon laser image were observed completely in IR image. In case of inflammatory choroiditis, patch-like hot spot with surrounding high reflectance was observed in IR image. The subretinal structures and new vessels were clearly visible in IR image despite overlying thick preretinal fibrous prolifertive membrane and vitreous hemorrhage.
CONCLUSIONS
The IR image using SLO is a fast and non-invasive diagnostic tool. Compared to fluorescein angiography, IR image gave a improved image for subretinal structure and additional information. Therefore IR imaging is recommended along with clinical symptom, FAG, ICGA for the diagnosis and treatment.
