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Imaging Biological Samples with Optical Microscopy

Imaging Biological Samples with Optical Microscopy

Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...

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Optical Clearing of the Mouse Central Nervous System Using Passive CLARITY

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Published on: June 30, 2016

Enhancing image quality in cleared tissue with adaptive optics.

Marc R Reinig¹, Samuel W Novak¹, Xiaodong Tao¹

¹University of California Santa Cruz, W.M. Keck Center for Adaptive Optical Microscopy, Baskin Engineering, 1154 High Street, Santa Cruz, California 95064, United States.

Journal of Biomedical Optics

|October 14, 2016

Summary

This summary is machine-generated.

Adaptive optics in two-photon microscopy significantly improve deep tissue imaging clarity by correcting refractive aberrations. This advanced technique enhances image intensity and reduces errors, enabling clearer visualization of fine details.

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Area of Science:

Biomedical Optics
Microscopy
Tissue Imaging

Background:

Tissue scattering and refractive index variations limit deep tissue imaging.
Current clearing techniques improve depth but not necessarily clarity.
Refractive aberrations, including spherical and Zernike modes, degrade image quality at depth.

Purpose of the Study:

To investigate the impact of spherical and higher-order aberrations on two-photon microscopy imaging in fixed tissues.
To compare the effectiveness of correcting only spherical aberration versus correcting the first 22 Zernike aberrations using adaptive optics.

Main Methods:

Utilized an adaptive optics two-photon microscope.
Imaged two types of fixed tissue.
Applied adaptive optics to correct for spherical aberration only and for the first 22 Zernike aberrations.

Main Results:

Adaptive optics correction significantly improved image quality.
Compensating for all 22 Zernike aberrations resulted in a 1.6x increase in image intensity.
Root mean square error was reduced by 3x when correcting for all aberrations.

Conclusions:

Adaptive optics effectively corrects refractive aberrations in deep tissue imaging.
Comprehensive aberration correction (22 Zernike modes) offers superior performance over correcting only spherical aberration.
Adaptive optics enhances imaging clarity and efficiency in biological tissues.