: Research published in the SPIE Digital Library uses these calculations to estimate the focal spot size on the retina in patients with turbid eye lenses. 3. International Trade and Customs

to describe the diffraction length for partial-coherent light beams.

In scientific literature regarding eye health, "Ld" often stands for .

While less common in academic databases, .rar files with "LD" in the title are often found in gaming communities.

: It is frequently discussed in Rietveld Method forums where scientists exchange software tutorials and data for X-ray diffraction (XRD) analysis. 2. Physical Optics and Ophthalmology