Reading performance of monofocal pseudophakic patients with and without glasses under normal and dim light conditions.
OBJECTIVE
To evaluate reading performance of patients with monofocal intraocular lenses (IOLs) (Acrysof SN60WF) with or without reading glasses under bright and dim light conditions.


METHODS
Austrian Academy of Ophthalmology, Vienna, Austria.


METHODS
Evaluation of a diagnostic test or technology.


METHODS
In pseudophakic patients, the spherical refractive error was limited to between +0.50 diopter (D) and -0.75 D with astigmatism of 0.75 D (mean spherical equivalent: right eye, -0.08 ± 0.43 [SD]; left eye, -0.15 ± 0.35). Near addition was +2.75 D. Reading performance was assessed binocularly with or without reading glasses at an illumination of 100 candelas (cd)/m(2) and 4 cd/m(2) using the Radner Reading Charts.


RESULTS
In the 25 patients evaluated, binocularly, the mean corrected distance visual acuity was -0.07 ± 0.06 logMAR and the mean uncorrected distance visual acuity was 0.01 ± 0.11 logMAR. The mean reading acuity with reading glasses was 0.02 ± 0.10 logRAD at 100 cd/m(2) and 0.12 ± 0.14 logRAD at 4 cd/m(2). Without reading glasses, it was 0.44 ± 0.13 logRAD and 0.56 ± 0.16 logRAD, respectively (P < .05). Without reading glasses and at 100 cd/m(2), 40% of patients read 0.4 logRAD at more than 80 words per minute (wpm), 68% exceeded this limit at 0.5 logRAD, and 92% exceeded it at 0.6 logRAD. The mean reading speed at 0.5 logRAD was 134.76 ± 48.22 wpm; with reading glasses it was 167.65 ± 32.77 wpm (P < .05).


CONCLUSIONS
A considerable percentage of patients with monofocal IOLs read newspaper print size without glasses under good light conditions.
From the Austrian Academy of Ophthalmology (W. Radner, S. Radner, Raunig) and the Department of Phoniatrics (Diendorfer), Medical University of Vienna, Vienna, Austria. Electronic address: wolfgang.radner@inode.at.
Wolfgang
W
Radner
From the Austrian Academy of Ophthalmology (W. Radner, S. Radner, Raunig) and the Department of Phoniatrics (Diendorfer), Medical University of Vienna, Vienna, Austria.
Stephan
S
Radner
From the Austrian Academy of Ophthalmology (W. Radner, S. Radner, Raunig) and the Department of Phoniatrics (Diendorfer), Medical University of Vienna, Vienna, Austria.
Valerian
V
Raunig
From the Austrian Academy of Ophthalmology (W. Radner, S. Radner, Raunig) and the Department of Phoniatrics (Diendorfer), Medical University of Vienna, Vienna, Austria.
Gabriela
G
Diendorfer
D000368:Aged; D000369:Aged, 80 and over; D055253:Color Vision / Q000502:physiology*; D005139:Eyeglasses; D006801:Humans; D008027:Light; D055255:Mesopic Vision / Q000502:physiology*; D008875:Middle Aged; D009524:Newspapers as Topic; D019591:Pseudophakia / Q000503:physiopathology*; D011932:Reading; D014787:Vision Tests; D015348:Vision, Binocular / Q000502:physiology*; D014792:Visual Acuity / Q000502:physiology