At 3.0 mm pupil, the MTF values at 50lp/mm for the primary focus were 0.39 and 0.37, and for the secondary focus, 0.29 and 0.26 for the AT LARA and Proming IOLs, respectively. Light intensity assessment revealed that both IOLs allocate more energy to primary than secondary focus. The ray propagation of the two IOLs showed two distinct foci.
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In addition, the optical quality of the IOLs was assessed by measuring the modulation transfer function (MTF) values at 50lp/mm and 3.0 and 4.5 mm apertures on the optical bench OptiSpheric® IOL PRO II. An experimental set-up with 0.01% fluorescein solution and monochromatic light (532 nm) was used to visualize the IOLs’ ray propagation. This study assessed the Proming EDOF Multifocal AM2UX and the AT LARA 829MP. To assess the optical behavior of a new diffractive intraocular lens (IOL) and compare its performance to that of an established extended-depth-of-focus (EDOF) IOL. It is the investigation of choice in the today's era considering patient satisfaction and visual outcomes, postpremium intraocular lens implantations. The system integrates corneal topography with wavefront aberrometry, which has the unique feature of revealing the internal aberrations of the eye by subtracting the corneal aberrations from total aberration.
This review will help all the ophthalmologists including residents and fellows learn the principle, features, and clinical applications of iTrace. In this review, our prime focuses on Ray Tracing aberrometer, iTrace. A variety of aberrometers with different principles are available, such as Ray Tracing, Hartmann-Shack, Tscherning, and automatic retinoscopy. Aberrometers are the most vital instruments used for estimating optical aberrations so that a more comprehensive understanding of optical error can be quantified and corrected. The QoV is primarily affected by both higher-and lower-order optical aberration. Moreover, they are the departure of the performance of an optical system from the predictions of paraxial optics. Optical aberrations are defect in a lens or a mirror prevents light rays from being focused at a single point and results in a distorted or blurred image. Similarly, the quantity of vision is documented by measuring uncorrected and best-corrected distance visual acuities. The QoV is an integration of varied optical and neural factors. The quality of vision (QoV) can be easily assessed by documenting objectively the higher-order aberrations or by using subjective questionnaires available. A combination of both determines the final visual acuity. Visual acuity is the sum of qualitative and quantitative factors.
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