Two-photon excitation fluorescence in ophthalmology: safety and improved imaging for functional diagnostics

被引:3
作者
Kaushik, Vineeta [1 ]
Dabrowski, Michal [1 ,2 ]
Gessa, Luca [2 ]
Kumar, Nelam [2 ]
Fernandes, Humberto [2 ]
机构
[1] Polish Acad Sci, Inst Phys Chem, Warsaw, Poland
[2] Polish Acad Sci, Inst Phys Chem, Int Ctr Translat Eye Res, Warsaw, Poland
关键词
two-photon excitation fluorescence; diagnostics; ophthalmology; functional imaging; non-invasive; adaptive optics; ADAPTIVE OPTICS; MICROSCOPY; LIGHT; AUTOFLUORESCENCE; VISUALIZATION; GENERATION; EXPOSURES; RETINOIDS; CONTRAST; STORAGE;
D O I
10.3389/fmed.2023.1293640
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Two-photon excitation fluorescence (TPEF) is emerging as a powerful imaging technique with superior penetration power in scattering media, allowing for functional imaging of biological tissues at a subcellular level. TPEF is commonly used in cancer diagnostics, as it enables the direct observation of metabolism within living cells. The technique is now widely used in various medical fields, including ophthalmology. The eye is a complex and delicate organ with multiple layers of different cell types and tissues. Although this structure is ideal for visual perception, it generates aberrations in TPEF eye imaging. However, adaptive optics can now compensate for these aberrations, allowing for improved imaging of the eyes of animal models for human diseases. The eye is naturally built to filter out harmful wavelengths, but these wavelengths can be mimicked and thereby utilized in diagnostics via two-photon (2Ph) excitation. Recent advances in laser-source manufacturing have made it possible to minimize the exposure of in vivo measurements within safety, while achieving sufficient signals to detect for functional images, making TPEF a viable option for human application. This review explores recent advances in wavefront-distortion correction in animal models and the safety of use of TPEF on human subjects, both of which make TPEF a potentially powerful tool for ophthalmological diagnostics.
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页数:8
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