Astigmatism after phacoemulsification and aspiration procedures: BENT versus standard incisions.
We examined the induction and spontaneous regression of corneal astigmatism among 1,023 phacoemulsification and aspiration (PEA) cataract surgeries performed with standard (n = 831) and BENT incisions (n = 192). The BENT (between 9 and 12 o'clock) incision is a method of entering the anterior chamber from the oblique side. In the BENT group, the degree of astigmatism was not significantly different from the standard group, 3 months postoperatively (1.48 +/- 0.07 vs. 1.25 +/- 0.04 dptr.) and 6 months postoperatively (1.30 +/- 0.06 vs. 1.28 +/- 1.28 +/- 0.06 dptr.). However, 1 week and 1 month postoperatively, the astigmatism resulting from the BENT incision was much less than that of the standard PEA incision (1.69 +/- 0.17 vs. 2.96 +/- 0.05 and 1.60 +/- 0.08 vs. 1.80 +/- 0.05 dptr, respectively). Visual acuity also improved faster. The BENT procedure is recommended, because it is a simple way to lessen astigmatism.
Suzuki
R
R
Department of Ophthalmology, Yamaguchi University School of Medicine, Ube City, Japan.
Kurimoto
S
S
D000368:Aged; D001251:Astigmatism / Q000209:etiology*; D002387:Cataract Extraction / Q000379:methods*; D005260:Female; D006801:Humans; D007429:Intraocular Pressure; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000209:etiology*; D012029:Refraction, Ocular; D014792:Visual Acuity