2022年12月5日 · 前房深度(anterior chamber depth, ACD) ：前房由角膜虹膜，瞳孔区晶状体，睫状体前部共同围成的腔隙。 前房在瞳孔处最深，正常人约为3.0mm，周边部渐浅，最周边部称为前房角。

2024年7月4日 · In biometry, the anterior chamber depth (ACD) is defined as the distance between the central anterior corneal epithelium and the anterior lens capsule of the crystalline lens [1]) or the anterior surface of the intraocular lens (IOL) or the anterior surface of the remaining anterior capsule or anterior iris surface in aphakic eyes.

2023年10月19日 · AL作为IOL屈光力计算的关键参数，每1 mm的测量误差将导致术后1.75~3.75 D的屈光误差。 一般来说双眼的AL差异不超过0.3 mm (在角膜K值、眼球状态及屈光状态一致的情况下)，出现大的差异应进行排除性分析并进行诊断。

The ACD used in IOL studies and formulas is measured from the corneal epithelium to the lens (rather than the more anatomically correct corneal endothelium to lens). Given the rapidly changing nature of this field, we aimed to summarize the previous 10 years of IOL studies to provide an evidenced-based guide to IOL formula selection.

When the ACD measured with Pentacam was corrected for corneal thickness, the mean value was 3,76+/- 0,31 mm. ACD measurements obtained by IOL Master were significantly greater compared to Pentacam.

2025年1月29日 · Schematic eyes with different values of pseudophakic anterior chamber depth (ACD), refractive cylinder and sphere were used to calculate the exact toric and spherical power of the IOL needed to achieve emmetropia. The toric ratio could range between 0.88 and 1.6, while the spherical ratio between 1.01 and 1.61.

ACD measurements from the Galilei were compared to those obtained from the IOLMaster. The Galilei measures “internal” aqueous depth (AQD) from the posterior surface of the cornea, whereas IOLMaster measures ACD from the anterior corneal surface.

2022年2月1日 · To investigate the prediction accuracy of intraocular lens (IOL) calculation formulas, and the impact of anterior chamber depth (ACD) and lens thickness (LT) measurement errors on IOL power calculation in patients undergoing combined phakic IOL (PIOL) removal and cataract surgery.

This review describes the principles and practices involved in the calculation of intraocular lens (IOL) power. The theories behind formulas for calculating IOL power are described, using regression and optical methods employing ‘thin lens’ and ‘thick lens’ models, as well as exact ray-tracing methods.

The personalized ACD (pACD) is developed from any given series of a particular IOL style. It includes (1) a factor that increases the ACD with increasing AL, (2) a factor that increases the ACD with increasing corneal curvature, (3) a factor that moderates the change in ACD for extremely long and short eyes, and (4) a constant added to the ACD. 21