Structural dark field adaptive optics retina imager

Abstract

The invention provides a structural dark field adaptive optics retina imager which comprises a light source, an optical system, a structural dark field realizing device, an adaptive optical device and a computer. Light emitted by the light source is collimated into parallel light after passing through an illuminating objective lens. The parallel light forms ring-shaped structural light through a ring-shaped diaphragm. The ring-shaped light shines on eye ground retinas through a human eye optical system. The light directly reflected by the retinas is still reflected according to an incident light path. A light beam is unchanged in structure after passing through a light beam matching system, a deformable mirror and the light beam matching system and then enters an imaging light path. As the radius of a round hole diaphragm is the same as the inner diameter of the ring-shaped diaphragm, the light beam is filtered out by the round hole diaphragm, and can not participate in imaging. The light scattered by the retinas enters the imaging light path after passing through the light matching system, the deformable mirror and the light matching system. Most of the light in the light beam can participate in imaging through the round hole diaphragm. The imager achieves dark field imaging through a structural illuminating and receiving method, and improves a contrast ratio of retina images compared with the prior art.

Description

technical field [0001] The invention relates to a structural dark field adaptive optics retinal imager. Background technique [0002] Eyes are the windows to the soul. More than 80% of the external information obtained by people relies on eyes to obtain. Everyone desires to have a pair of bright and healthy eyes. However, in reality, the number of people suffering from eye diseases is quite large, and there are still signs of rising, which has attracted more and more people's attention. From a medical professional point of view, except for ocular trauma and refractive errors, eye diseases actually originate from the retina of the fundus. When there is a problem with the fundus, it will show abnormal shape or color clinically (such as swelling, edema, hole, atrophy, spots or color circles, exudates, etc.). On the other hand, the human eye is a part of the human body, and eye lesions may also come from other problems in the body. Medical research and clinical studies have p...

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Problems solved by technology

However, the above studies are limited to in vitro ophthalmic experiments and cannot be applied to live human retinal imaging.

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