Effect of spherical aberration on visual function under photopic and mesopic conditions after cataract surgery.
OBJECTIVE
To evaluate the effect of spherical aberration on visual function under natural pupil conditions after cataract surgery.


METHODS
Keio University Hospital, Tokyo, Japan.


METHODS
This study comprised cataract patients who had cataract extraction with implantation of an acrylic intraocular lens. Preoperative and postoperative visual acuity, higher-order aberration in the whole eye, contrast sensitivity function, and pupil diameter under photopic and mesopic conditions 1 month after surgery were measured. The area under log contrast sensitivity function (AULCSF) and spherical aberration corresponding to the individual pupil diameter under photopic and mesopic conditions were evaluated.


RESULTS
One hundred seven eyes of 79 patients (30 men, 49 women; mean age 68.0 years +/- 9.6 [SD]) were evaluated. The mean pupil diameter was 2.9 +/- 0.50 mm under photopic conditions and 3.6 +/- 0.57 mm under mesopic conditions. The mean spherical aberration was 0.03 +/- 0.04 mum (range -0.12 to 0.34 mum) under photopic conditions and 0.05 +/- 0.10 mum (range -0.14 to 0.55 mum) under mesopic conditions. The postoperative AULCSF without glare under photopic conditions was significantly negatively correlated with spherical aberration (P = .014). The postoperative AULCSF with and without glare under mesopic conditions was significantly negatively correlated with spherical aberration (P<.001 and P = .01, respectively).


CONCLUSIONS
Postoperative spherical aberration had a significant effect on visual function under photopic and mesopic conditions. This result indicates that reduced postoperative spherical aberration improves postoperative visual function under photopic and mesopic conditions.
Yamaguchi
Takefumi
T
Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.
Dogru
Murat
M
Yamaguchi
Kazuko
K
Ono
Takeshi
T
Saiki
Megumi
M
Okuyama
Hiromi
H
Tsubota
Kazuo
K
Negishi
Kazuno
K
D000180:Acrylic Resins; D000368:Aged; D000369:Aged, 80 and over; D015350:Contrast Sensitivity / Q000502:physiology; D005260:Female; D019466:Glare; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008027:Light; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D019591:Pseudophakia / Q000503:physiopathology*; D011680:Pupil / Q000502:physiology* / Q000528:radiation effects; D014792:Visual Acuity / Q000502:physiology*
D000180:Acrylic Resins