Those lenses provide improved vision under low light conditions to the patient.Methods We will show first the influence of ocular aberrations on visual performance, and how do they change with pupil size. We will also show the way higher order aberrations affect the manifest refraction procedure. ...
The first manifest refraction was performed after obtaining automated refraction and measuring the spectacles of the patient. The second refraction was typically refined from the first also considering wavefront refraction and tomography/topography. Results: The latest 2 manifest refractions of 1000 eyes ...
REFRACTION USING MYDRIATIC, CYCLOPLEGIC, AND MANIFEST TECHNIQUES ROGER L. HIATT, M.D., RAY BRASWELL, M.D., LLOYD S M I T H , AND JAMES W. PATTY, M.D. Memphis, Tennessee M.D., In measuring refractive errors, the oph thalmologist especially uses cycloplegic drugs. Refractive ...
Visual AcuityTo compare the achieved refractive accuracy of laser in situ keratomileusis (LASIK) performed based on manifest refraction with the predicted accuracy that would have been achieved using WASCA aberrometric refraction with and without Seidel correction factor for sphere. London Vision ...
On examination, visual acuity fully corrected was 6/12 right and left. Significant findings were limited to her bilateral nuclear sclerotic cataract. Corneal topography (Figure 2) (Alcon, Eyemap) produced results markedly different from those found on refraction, namely an astigmatism of 1.14 D...
Visual acuityRefractive surgeryBackground To evaluate accuracy of WASCA wavefront aberrometry (WA) refraction in comparison to manifest refraction (MR) in an older population awaiting cataract surgery. Methods Prospectively, refractive errors of 130 eyes were determined by WA and MR. Mean age was ...
Visual acuityWavefront aberrometryBackground: To evaluate accuracy of WASCA wavefront aberrometry (WA) refraction in comparison to manifest refraction (MR) in an older population awaiting cataract surgery. Methods: Prospectively, refractive errors of 130 eyes were determined by WA and MR. Mean age...
The cylinder axis on manifest refraction (MR) was significantly different from measured keratometry, so a second procedure was performed to align the cylinder axis of the IOL with the steep axis on MR. This repositioning procedure improved visual outcome to a final uncorrected vision of 20/25 (...
The cylinder axis on manifest refraction (MR) was significantly different from measured keratometry, so a second procedure was performed to align the cylinder axis of the IOL with the steep axis on MR. This repositioning procedure improved visual outcome to a final uncorrected vision of 20/25 (...
Near visual acuity, motility examination, slit lamp examination, dilated fundus examination, and cycloplegic refraction were recorded for each patient. Results Age range, was 3-41 years. Overall, near visual acuity was well preserved in all patients, with at least J3 acuity in the better eye. ...