基于Scheimpflug的光学生物仪与部分连贯干扰仪在患有角质的患者之间达成协议
Hassan Hashemi1, Alireza Jamali2, Morad Amir Ahmad3
1Noor Ophthalmology Research Center, Noor Eye Hospital, Tehran, Iran.
Scientific reports
|January 24, 2026
概括
在Pentacam AXL和IOL Master 500显示,在形患者的轴长度上有很好的一致性. 然而,角膜测量和其他测量的差异导致眼内透镜 (IOL) 功率计算的变化.
科学领域:
- 眼科医生 眼科 眼科
- 生物医学工程 生物医学工程
背景情况:
- 精确的眼内镜 (IOL) 功率计算对于白内障手术后成功的折射结果至关重要.
- 角膜 (KCN) 由于角膜不规则性,对生物识别提出了独特的挑战.
- 对比光学生物识别设备对于临床决策至关重要.
研究的目的:
- 评估Pentacam AXL和IOL Master 500之间的协议,用于测量形患者的生物识别参数.
- 为了评估设备差异对眼内透镜 (IOL) 功率计算的影响,使用各种公式.
主要方法:
- 这是一项涉及121只60岁以上和白内障患者眼睛的横截面研究.
- 使用Pentacam AXL和IOL Master 500进行的光学生物识别.
- 使用六种公式 (Kane keratoconus,Barret universal 2,Holladay 1,Haigis,Hoffer Q,SRK/T) 来计算基于设备测量的IOL功率.
- 使用布兰德-阿尔特曼方法分析的协议.
主要成果:
- 在两种设备之间的轴长度测量中发现了良好的一致性 (95%的一致性极限: -0.08到0.02).
- 在角质测量 (K1,K2),前腔深度 (ACD) 和白色对白色 (WTW) 测量中观察到差异.
- 在IOL功率计算中注意到了显著的差异,Pentacam AXL通常产生更高的功率值.
- 霍弗Q公式显示出最明显的差异 (+0.55 ± 0.92),而霍拉代1显示出最少的差异 (+0.34 ± 1.98).
结论:
- 在Pentacam AXL和IOL Master 500表现出在形患者中轴长度的良好一致性.
- 设备之间的角质量测量,ACD和WTW测量的差异会影响IOL功率计算.
- 选择IOL计算公式显著影响最终功率,而Pentacam AXL和Kane keratoconus公式导致了更高的估计值.
相关概念视频
Mixtures of Gases: Dalton's Law of Partial Pressures and Mole Fractions
43.7K
Unless individual gases chemically react with each other, the individual gases in a mixture of gases do not affect each other’s pressure. Each gas in a mixture exerts the same pressure that it would exert if it were present alone in the container. The pressure exerted by each individual gas in a mixture is called its partial pressure.
43.7K
Dalton's Law of Partial Pressure
2.5K
The partial pressure of a gas is a measure of the thermodynamic activity of the gas's molecules. The pressure that a gas would create if it occupied the total volume available is called the gas's partial pressure. If two or more gases are mixed together in a container, the molecules move randomly and collide with each other, causing them to reach thermal equilibrium. When the gases have the same temperature, their molecules have the same average kinetic energy. Thus, each gas obeys the...
2.5K
Dosage Regimens: Partial Pharmacokinetic Parameters
159
It is not uncommon for complete drug pharmacokinetic profiles to remain elusive in pharmacokinetics. This necessitates certain educated assumptions by pharmacokineticists to determine appropriate dosage regimens without comprehensive pharmacokinetic data from animal or human studies. One prevalent assumption is setting the bioavailability factor, denoted as F, to 1 or 100%. This assumption caters to the scenario where a drug doesn't achieve full systemic absorption, resulting in the patient...
159
Inverse z-Transform by Partial Fraction Expansion
691
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...
691
Weak Base Solutions
24.9K
Some compounds produce hydroxide ions when dissolved by chemically reacting with water molecules. In all cases, these compounds react only partially and so are classified as weak bases. These types of compounds are also abundant in nature and important commodities in various technologies. For example, global production of the weak base ammonia is typically well over 100 metric tons annually, being widely used as an agricultural fertilizer, a raw material for chemical synthesis of other...
24.9K
Patient-centered Care
2.9K
Patient-centered care involves delivering care beyond inpatient hospitalization. Reflective practice can enhance a patient-centered approach. Reflective practice is a process of reasoning that considers all aspects of the present situation, including practicalities, learning from personal practice, and consideration of patient needs. Patients appreciate care decisions made while considering their input. Involving the patient in their care provides the patient with a sense of contribution rather...
2.9K


