雅科比-富里埃相口罩作为眼科元素来纠正长视
Ángel Salas-Sanchez1, Enrique González-Amador1, Alfonso Padilla-Vivanco1
1Universidad Politécnica de Tulancingo, Tulancingo, Hidalgo, Mexico.
概括
这项研究表明,雅科比-富里埃相口罩通过扩大清晰视野范围,有效地纠正近视. 新的眼镜镜设计最大限度地减少了对瞳孔大小和色谱偏差的依赖,以提高视觉敏度.
科学领域:
- 眼科光学 眼科光学
- 视觉科学是一种视觉科学.
- 生物医学工程 生物医学工程
背景情况:
- 长视障碍的纠正是眼科的一个重大挑战.
- 目前对长视障碍的解决方案通常涉及视觉质量或适应能力的权衡.
- 像视觉斯特雷尔比率这样的客观指标对于评估眼镜镜片性能至关重要.
研究的目的:
- 为了研究Jacobbi-Fourier相口罩作为眼科元素用于长视障碍的纠正.
- 开发一种接触或眼内透镜,其性能对瞳孔直径变化不敏感.
- 为了提高长视障碍患者清晰视力的范围.
主要方法:
- 使用富里埃光学来评估Jacob-Fourier多项式的数值模拟.
- 在不同瞳孔大小 (6,4和2毫米) 和波长 (656.3,587.6,486.1纳米) 的性能评估.
- 使用Visual Strehl联合目标度量 (VSCombined) 对非对称相位函数的验证.
主要成果:
- 雅科比-富里埃相口罩有效地扩展了长视眼 (1-6米) 的眼睛的清晰视力.
- 达到至少0.10 logMAR (6/7.5 Snellen) 的视力敏度.
- 性能在不同的瞳孔大小中保持一致,视网膜图像对比度得到改善,文物减少.
结论:
- 雅科比-富里埃相口罩显示出对长视障碍的纠正有希望.
- 建议的眼科元素提供了良好的清晰视觉范围.
- 减少对瞳孔大小和色谱偏差的依赖是关键优势.
相关概念视频
Focusing of Light in the Eye
2.6K
Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
2.6K
Distance Corrections
27
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
27
Power Factor Correction
161
The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
161
Inverse z-Transform by Partial Fraction Expansion
308
The inverse z-transform is a crucial technique for converting a function from its z-domain representation back to the time domain. One effective method for finding the inverse z-transform is the Partial Fraction Method, which involves decomposing a function into simpler fractions with distinct coefficients. These fractions correspond to known z-transform pairs, facilitating the inverse transformation process.
To begin the process, the poles of the function are identified and the function is...
To begin the process, the poles of the function are identified and the function is...
308
Linear Approximation in Frequency Domain
88
Linear systems are characterized by two main properties: superposition and homogeneity. Superposition allows the response to multiple inputs to be the sum of the responses to each individual input. Homogeneity ensures that scaling an input by a scalar results in the response being scaled by the same scalar.
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
88
Trigonometric Fourier series
245
Fourier series is a foundational mathematical technique that decomposes periodic functions into an infinite series of sinusoidal harmonics. This method enables the representation of complex periodic signals as sums of simple sine and cosine functions, facilitating their analysis and interpretation in various fields, including signal processing, acoustics, and electrical engineering.
The trigonometric Fourier series specifically expresses a periodic function with a defined period T using sine...
The trigonometric Fourier series specifically expresses a periodic function with a defined period T using sine...
245


