Testing the dioptric power accuracy of exact-power-labeled intraocular lenses

Abstract

The small improvement in power-prediction accuracy for exact-power-labeled IOLs decreased in IOLs of 20.00 D or greater. For IOLs of 15.00 to 20.00 D, the increased accuracy (+/-0.09 D) was statistically significant and could increase predictability of postoperative refractions. Acrylic dioptric power was directly proportional to temperature.

Bilateral implantation of +56 and +58 diopter custom-made intraocular lenses in patient with extreme nanophthalmos

“…First of all, the International Organization for Standardization allows the tolerance of ±1.0 D for the IOLs of >30.0 D, while the tolerance for lower-powered IOLs is ±0.5 D or even less. 11 , 19 This is a concern when trying to achieve a good refractive outcome, especially as the IOL calculation is already less accurate in very short eyes. 2 , 9 Another issue is the increase of spherical aberration with increasing IOL power.…”

Assessing the effect of laser beam width on quantitative evaluation of optical properties of intraocular lens implants

“…[10][11][12] Briefly, a 1 × 2 single-mode optical fiber coupler (Newport Corp., Irvine, California) was integrated with a 10× infinity corrected objective lens (Edmund Optics Inc., Barrington, New Jersey) to establish a collimated Gaussian beam. [10][11][12] Briefly, a 1 × 2 single-mode optical fiber coupler (Newport Corp., Irvine, California) was integrated with a 10× infinity corrected objective lens (Edmund Optics Inc., Barrington, New Jersey) to establish a collimated Gaussian beam.…”

“…[10][11][12][13] The CLM operating principle is based on a simple fiber-optic confocal laser design that integrates properties of high-resolution confocal microscopy and fiber-optic sensing. [10][11][12][13] The CLM operating principle is based on a simple fiber-optic confocal laser design that integrates properties of high-resolution confocal microscopy and fiber-optic sensing.…”

Refractive Index Shaping: In Vivo Optimization of an Implanted Intraocular Lens (IOL)

“…Also, current standards regarding IOL power labeling allow a tolerance of ±0.30 D for IOLs of 0.00 D to 15.00 D or less. The tolerance increases to ±0.40 D for IOLs with a power from greater than 15.00 D to 25.00 D or less, which means that an IOL of 22.61 D and another of 23.39 D could be labeled with a dioptric power of 23.00 D or the IOL of 23.39 D could be labeled as both 23.0 D and 23.5 D [37]. All these factors make postoperative IOL adjustment technologies particularly interesting.…”