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Incision placement in cataract surgery affects corneal HOAs, not vision quality
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Researchers found that the location of corneal incisions in cataract surgery affected corneal higher-order aberrations, primarily to the posterior surface, but did not significantly affect postoperative vision.
In the study recently published in Optometry and Vision Science, cataract surgery patients were divided into two groups: group 1 (32 right eyes) underwent corneal incision at 9 o’clock and paracentesis incision at 3 o’clock; group 2 (30 left eyes) underwent corneal incision at 3 o’clock and paracentesis incision at 6 o’clock.
Corneal high-order aberrations (HOAs) were measured before surgery and 1 day, 3 days, 2 weeks, 1 month and 2 months after surgery. Researchers recorded the changes in corneal aberrations between the two groups.
Corneal aberrations on the posterior surface were more greatly affected than those on the anterior surface, according to the study.
The researchers observed time-dependent changes in corneal HOAs. The highest changes in HOAs occurred on postoperative day 1, and the HOAs gradually returned to baseline values 2 months after surgery.
The researchers wrote that the corneal incisions and phacoemulsification process affect HOAs on the posterior cornea, however, the location of the corneal incisions did not significantly affect postoperative visual quality.
Disclosure: The research was supported by the Special Scientific Research Fund of the Ministry of Public Health Research and the National Natural Science Foundation of China.
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