Changes in contrast sensitivity after Artisan lens implantation for high myopia.
OBJECTIVE
To determine the effects of Artisan lens implantation on contrast sensitivity.


METHODS
Prospective consecutive interventional case series.


METHODS
Forty-nine eyes of 30 patients with myopia and myopia with astigmatism, who underwent implantation of the Artisan iris-fixated phakic intraocular lens. Preoperative testing served as the control.


METHODS
Implantation of the Artisan phakic intraocular lens to correct myopia.


METHODS
Refractive predictability and Snellen visual acuity were evaluated preoperatively and at least 4 months postoperatively. Additionally, photopic and mesopic contrast sensitivities were measured at 1.5, 3, 6, 12, and 18 cycles per degree, with and without glare testing.


RESULTS
The mean preoperative spherical equivalent (SE) was -12.16 diopters (D) (range, -6.88 to -18.00). The mean postoperative SE was -0.46+/-0.58 D (range, +0.50 to -1.75). Ninety percent of eyes were within 1.00 D of the predicted result, and 39% gained > or =1 lines of best-corrected visual acuity (BCVA). When compared with preoperative measurements, postoperative contrast sensitivity was increased under photopic conditions and slightly decreased under mesopic conditions. Adverse events were one wound leak requiring resuturing in the immediate postoperative period and one subluxed lens after significant blunt trauma. No eyes lost > or =2 lines of BCVA.


CONCLUSIONS
Artisan implantation for the correction of high myopia seems to be a predictable procedure. Increases in photopic contrast sensitivity values after implantation of this phakic intraocular lens stand in distinction to the decreases in photopic contrast sensitivity previously reported after LASIK correction of this degree of myopia.
Lombardo
Anthony J
AJ
Eye Surgeons of Indiana, Indianapolis, Indiana 46256, USA.
Hardten
David R
DR
McCulloch
Amanda G
AG
Demarchi
Janet L
JL
Davis
Elizabeth A
EA
Lindstrom
Richard L
RL
D000328:Adult; D001251:Astigmatism / Q000503:physiopathology; D015350:Contrast Sensitivity / Q000502:physiology*; D005260:Female; D019466:Glare; D006801:Humans; D007498:Iris / Q000601:surgery; D019654:Lens Implantation, Intraocular / Q000379:methods*; D007908:Lens, Crystalline / Q000502:physiology; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000503:physiopathology* / Q000601:surgery*; D011446:Prospective Studies; D014792:Visual Acuity