Axial length may be predictive of IOP, anterior chamber depth after cataract surgery
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Axial length appears to be predictive of postoperative IOP and anterior chamber depth changes in the early period after cataract surgery with IOL implantation, according to a prospective study.
"Thus, eyes with a long [axial length] may require close postoperative monitoring," Yang Kyeung Cho, MD, PhD, said in the July issue of Journal of Cataract & Refractive Surgery.
Dr. Cho examined the changes in IOP and anterior chamber depth according to axial length among 71 eyes of 71 patients who had undergone uneventful phaco with foldable IOL implantation. Dr. Cho recorded IOP changes at baseline, at 1 day postop, and at 1, 3 and 5 weeks postop; anterior chamber depth was recorded preoperatively and at 1 day postop and 3 and 5 weeks postop.
To analyze IOP and anterior chamber depth changes, all eyes were classified into four groups based on axial length: 21 mm to less than 23 mm (group one); 23 mm to less than 25 mm (group two); 25 mm to less than 27 mm (group 3); and 27 mm or greater (group four).
Dr, Cho found no statistically significant differences in preoperative IOP according to axial length. However, there was a statistically significant postoperative IOP decrease in groups one and two and a statistically significant IOP increase in groups three and four.
There was also a statistically significant difference in the preoperative anterior chamber depth between axial length groups and a statistically significant increase in anterior chamber depth with increased axial length from baseline to 1, 3 and 5 weeks postoperatively, according to the study.