Evaluation of 6.5-mm BENT incision to reduce postoperative astigmatism.
We examined surgically induced astigmatism following 6.5-mm incisions between 9 and 12 o'clock (BENT incision) in 50 cases with cataracts who underwent phacoemulsification-aspiration and 6-mm intraocular lens implantation. The surgically induced astigmatism (n = 50) shifted to against-the-rule astigmatism (ATR; -0.03 +/- 0.95 dpt) 1 day after the operation and then tended to shift to with-the-rule astigmatism (WTR). The results of a group with preexisting ATR (> 2 dpt; n = 4) were similar to the results of the aforementioned group, whereas the results of a group (n = 7) with preexisting WTR (> 2 dpt) were different. Astigmatism in this group shifted to ATR of about 1.0 dpt. This study suggests that the BENT incision procedure can reduce both preexisting WTR > 2.0 dpt and preexisting ATR > 2 dpt.
Nagata
S
S
Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Japan.
Yamada
K
K
Matsuno
K
K
Segawa
K
K
D000368:Aged; D000369:Aged, 80 and over; D001251:Astigmatism / Q000209:etiology / Q000503:physiopathology / Q000517:prevention & control*; D006801:Humans; D007910:Lenses, Intraocular / Q000295:instrumentation; D008768:Methylmethacrylates; D008875:Middle Aged; D018918:Phacoemulsification / Q000009:adverse effects / Q000379:methods*; D011183:Postoperative Complications / Q000517:prevention & control*; D011446:Prospective Studies; D014792:Visual Acuity
D008768:Methylmethacrylates