Related Experiment Video
Updated: Feb 4, 2026
05:12
Robotized Testing of Camera Positions to Determine Ideal Configuration for Stereo 3D Visualization of Open-Heart Surgery
Published on: August 12, 2021
2.5K
8K ultra-high-definition microscopic camera for ophthalmic surgery
Hiromasa Yamashita1,2, Kenkichi Tanioka2, Goichiro Miyake3
1Kairos Co. Ltd., Tokyo, Japan, yamashita@kairos-8k.co.jp.
Clinical Ophthalmology (Auckland, N.Z.)
|October 3, 2018
Summary
A new 8K ultra-high-definition (UHD) microscopic camera offers superior resolution for ophthalmic surgery. This compact, lightweight camera demonstrated feasibility in cadaver studies, paving the way for human clinical trials.
Area of Science:
- Ophthalmology
- Surgical Technology
- Medical Imaging
Background:
- A novel compact and lightweight 8K ultra-high-definition (UHD) camera has been developed.
- This 8K UHD camera is designed for interchangeable use with existing ophthalmic surgical microscopes.
Purpose of the Study:
- To evaluate the feasibility of using the new 8K UHD microscope in various ophthalmic surgeries.
- To assess the image quality and performance of the 8K UHD system compared to conventional microscopic cameras.
Main Methods:
- A feasibility study was conducted using pig cadaver eyes for cataract, glaucoma, and vitreous surgeries.
- The 8K UHD microscope system includes a surgical microscope, camera adaptor with relay lenses, an 8K UHD camera, and an 8K UHD LCD monitor.
Main Results:
- The 8K UHD microscope achieved higher resolution images compared to conventional microscopic cameras during ophthalmic surgeries.
- Image quality on the 8K UHD LCD was comparable to direct observation through the microscope eyepieces.
Conclusions:
- The feasibility study indicates promising results for the 8K UHD microscopic camera in ophthalmic surgery.
- Clinical trials in human patients are recommended to further validate the technology's efficacy.
Related Concept Videos
01:29Definite Integral
73
Consider a real-valued function defined on a closed interval. One of the fundamental objectives in calculus is to determine the area under the graph of such a function. When an exact computation is not readily available, this area can be estimated by dividing the interval into a finite number of equal subintervals. Each subinterval corresponds to a rectangle whose width is the length of the subinterval and whose height is determined by the value of the function at a selected point within that...
73
01:26Definition of z-Transform
1.6K
The z-transform is a powerful mathematical tool used in the analysis of discrete-time signals and systems. It is an essential analytical tool, analogous to the Laplace transform used in continuous-time systems. It plays a crucial role in the analysis of signals and systems, complementing the discrete-time Fourier transform. Both the z-transform and the Laplace transform convert differential or difference equations into algebraic equations, simplifying the process of solving complex problems.
1.6K
01:30Properties of Definite Integral I
62
A car’s motion over time can be effectively analyzed using integral calculus, particularly through the concept of the definite integral applied to a velocity–time relationship. The definite integral describes how velocity accumulates over a specified time interval to produce total displacement. From a geometric perspective, this displacement is interpreted as the area under the velocity–time curve. Several key properties of definite integrals make it easier to analyze motion...
62
01:27The Precise Definition of a Limit
312
Understanding the formal definition of a limit is essential for precise mathematical analysis. This concept allows us to rigorously determine how a function behaves near a particular point without relying on ambiguous notions such as "getting close." The ε-δ definition plays a foundational role in calculus, ensuring analytical clarity and logical consistency in limit evaluation.The formal definition states that the limit of a function f(x) as x approaches a is L, written asif for...
312
01:24Properties of Definite Integral II
55
Definite integrals are essential tools in calculus, used to quantify accumulated change over an interval. A common physical application is calculating the total displacement from a velocity-time graph. If a velocity function, v(t), describes the motion of an object over time, the definite integral gives the net displacement between times a and b. This integral corresponds to the signed area under the velocity curve between those two points.Two fundamental properties of definite integrals aid in...
55
01:23Integration by Parts: Definite Integrals
82
Definite integrals involving the product of two functions over a fixed interval can be evaluated using integration by parts. This method rewrites the integral as the difference of a product evaluated at the endpoints and a remaining definite integral that is often simpler to compute.A representative example is the definite integral of the inverse tangent function. Since there is no direct integration formula for arctan x, the integrand is rewritten as a product of arctan x and the...
82