Ophthalmic Microscope Vertical Magnification Control
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Solution Overview
Problem
Existing ophthalmic surgery microscopes with additional optical systems for wide-angle observation compromise stereoscopic effects, leading to reduced vertical magnification and impaired image quality during procedures like macular pucker treatment and ILM peeling.
Innovation Solution
An ophthalmic surgery microscope system with a control unit that detects the presence of an additional optical system and adjusts the vertical magnification control value to compensate for the loss of stereoscopic effects, using a combination of image detection and refractive index information to maintain optimal image presentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If an additional optical system is provided in a surgical microscope to achieve wide-angle observation, then the operative field width is improved, but the stereoscopic effects are lost and vertical magnification is reduced
Solution Approach 1:
The control unit dynamically adjusts the vertical magnification control value based on the detection result of the additional optical system. When the additional optical system is detected, the control unit changes the vertical magnification control value to compensate for the reduction in vertical magnification caused by the additional optical system, thereby maintaining stereoscopic effects while using the wide-angle observation capability.
Solution Approach 2:
The system incorporates a feedback mechanism where the detection unit continuously monitors the presence of the additional optical system, and the control unit adjusts the vertical magnification control value in response to the detection result. This closed-loop control ensures that the stereoscopic effects are maintained despite the use of the additional optical system for wide-angle observation.
2Area of moving object
If an additional optical system is provided to obtain a four times wider operative field, then the field of view is improved, but the vertical magnification becomes 1/4 times and image unevenness increases
Solution Approach 1:
The control unit adjusts the vertical magnification control value in response to the detection of the additional optical system. By changing this parameter, the system compensates for the 1/4 reduction in vertical magnification and the resulting image unevenness, thereby maintaining image quality while achieving the four times wider operative field.
3Manufacturing precision
If lenses of different magnifications are used for elaborate operations, then the image quality is improved, but the device complexity increases and operation time increases
Solution Approach 1:
Instead of requiring manual switching between different lenses, the system dynamically adjusts the vertical magnification control value through electronic control. This dynamic adjustment allows the system to maintain optimal image quality for elaborate operations without the physical complexity of multiple lenses, reducing both device complexity and operation time.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively compensates for the reduction in stereoscopic effects caused by additional optical systems, providing a wider operative field without impairing image quality, thus enhancing surgical precision and comfort during procedures.
Implementation Method 1
in consideration of the refractive index of a crystalline lens or cornea
Data Source
AI summary
The stereoscopic effect of an image presented in accordance with an additional optical system is compensated for. There is provided an ophthalmic surgery microscope system including: a surgical microscope that observes an inside of an eye from a pupil, and magnifies and presents a real image; an additional optical system selectively arranged between the surgical microscope and the pupil; an imaging unit that acquires the real image presented by the surgical microscope as an image; a presentation unit that stereoscopically presents the image; and a control unit that changes a vertical magnification control value for adjusting a vertical magnification of the real image in accordance with a detection result of the additional optical system.