First Author: S.Silva PORTUGAL
Co Author(s): F. Almeida I. Silva J. Dias
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Purpose:
To evaluate the effects of phacoemulsification surgery with placement of an intraocular lens (IOL), performed by the same surgeon, on the biomechanical measurements obtained by the ocular response analyser (ORA) in the first month after surgery.
Setting:
: Instituto de Oftalmologia Dr. Gama Pinto, Lisboa, Portugal
Methods:
A prospective study was conducted between June 2010 and January 2011 on eyes scheduled for cataract surgery through phacoemulsification. Eyes with previous history of intraocular surgery in the eye or diagnosis of glaucoma were not included.
The study comprised 20 eyes of consecutive patients with senile cataract who underwent phacoemulsification using the same technique performed by the same surgeon, without uneventful events or the need of enlargement of corneal incisions.
Measurements were taken in the preoperative period and at the end of the 1 month after surgery. Outcome measurements included corneal hysteresis (CH), the corneal resistance factor (CRF), the corneal compensated intraocular pressure (IOPcc), the Goldmann correlated intraocular pressure (IOPg) and central corneal thickness (CCT). CCT was measured with the integrated ultrasonic pachymeter of the ORA.
Results:
The eyes of 11 men and 9 women were included, with an average age of 72 years. At the end of the first month after cataract surgery it was found: an average decrease in PIOg of 1.7 mmHg; an average decrease of 0.88 mmHg in PIOcc; an average decreased in CH of 0.415 mmHg; an average decrease of 0.88 in CRF mmHg; an increased of 2.9 microns in CCT.
Conclusions:
Cataract surgery, performed under the same conditions and by the same surgeon, does not appear to significantly change the biomechanical conditions of the cornea, when measured by the ORA device in postoperative evaluation performed at the end of the first month.
Financial Disclosure:
No"
