Large-scale interrogation of retinal cell functions by 1-photon light-sheet microscopy

Area of Science:

• Neuroscience
• Ophthalmology
• Biomedical Imaging

Background:

• Retinal visual processing relies on coordinated activity across neuronal layers.
• Existing methods for layer-specific neural ensemble activity measurement are costly, utilizing pulsed infrared lasers for 2-photon activation.

Purpose of the Study:

• To introduce a novel, cost-effective 1-photon light-sheet imaging system for ex vivo retinal activity measurement.
• To enable functional classification of retinal cell types and high-resolution imaging of synaptic activity.

Main Methods:

• Development and application of a 1-photon light-sheet imaging system.
• Imaging of neuronal ensemble activity in the ex vivo retina under visual stimulation.
• High-resolution imaging of calcium entry at synaptic release sites.

Main Results:

• The system successfully measured activity in hundreds of retinal neurons over a large field of view.
• Reliable functional classification of different retinal cell types was achieved.
• Sufficient resolution was demonstrated for imaging calcium entry at individual synaptic release sites.

Conclusions:

• The 1-photon light-sheet system offers a powerful, affordable alternative for high-throughput retinal research.
• The system facilitates detailed investigation of retinal processing and synaptic function.