Influence of laser posterior capsulotomy on anterior chamber depth, refraction, and intraocular pressure.
OBJECTIVE
To evaluate the effect of neodymium:YAG (Nd:YAG) laser posterior capsulotomy on anterior chamber depth (ACD), intraocular pressure (IOP), and refraction, including spherical equivalent (SE) and various forms of astigmatism.


METHODS
Taipei Municipal Yang-Ming Hospital, Taipei, Taiwan.


METHODS
Fifty-three eyes of 46 patients with posterior capsule opacification were included in this prospective study. An Nd:YAG laser was used to perform posterior capsulotomy. Patients' ACD, IOP, and refraction were measured before the capsulotomy and 30 minutes, 1 week, and 1 and 3 months after.


RESULTS
There were no statistically significant differences in ACD, IOP, or SE (P =.201, P =.465, and P =.109, respectively). However, there were significant decreases in the magnitudes of refractive astigmatism and residual astigmatism after laser treatment (P =.012 and P <.001, respectively).


CONCLUSIONS
Although an Nd:YAG laser posterior capsulotomy did not significantly change ACD, IOP, or SE, it decreased the magnitudes of refractive astigmatism and residual astigmatism 1 week postoperatively. These stabilized thereafter.
Hu
C Y
CY
Department of Ophthalmology, Taipei Municipal Yang-Ming Hospital, Taipei, Taiwan, People's Republic of China.
Woung
L C
LC
Wang
M C
MC
Jian
J H
JH
D000368:Aged; D000369:Aged, 80 and over; D000867:Anterior Chamber / Q000033:anatomy & histology* / Q000502:physiology / Q000601:surgery; D002386:Cataract / Q000473:pathology*; D005260:Female; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D053685:Laser Therapy; D007903:Lens Capsule, Crystalline / Q000473:pathology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D011379:Prognosis; D011446:Prospective Studies; D012029:Refraction, Ocular / Q000502:physiology*; D014792:Visual Acuity