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K. Jin, D. Chang, S. Lee; Change of Anterior Chamber Parameters After Small-Incision Cataract Surgery. Invest. Ophthalmol. Vis. Sci. 2007;48(13):1084.
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To report change of anterior chamber parameters after small-incision cataract surgery by anterior segment optical coherence tomography (OCT).
We measured the anterior chamber parameters of 19 eyes of 14 patients before, 1 week and 1 month after small-incision cataract surgery by anterior segment OCT. The measured parameters were followings : the anterior chamber depth at the center of the cornea (ACD), the angle-opening distance 250 µm from the scleral spur (AOD250), the angle-opening distance 500 µm from the scleral spur (AOD500), and the trabecular-iris angle (TIA). And we used the degree of cataract as preoperative factor and inserted IOL haptic direction as intraoperative factor.
The ACD, AOD250, AOD500, and TIA increased significantly at postoperative 1 week (P = 0.000, 0.002, 0.003, 0.013) and 1 month (P = 0.000, 0,002, 0,001, 0.000). The preoperative parameters were negatively correlated with the differences between the postoperative 1week and preoperative parameters (γ=-0.774, -0.610, -0.503, -0.787) and postoperative 1 month and preoperative parameters (γ=-0.656, -0.693, -0.799, -0.829). The degree of cataract were not correlated with the change of parameters at postoperative 1 week (γ= -0.280, -0.109, -0.048, -0.183) and 1 month (γ= -0.184, 0.129, 0.007, -0.075) and inserted IOL haptic direction were not correlated with the differences between the postoperative 1week and preoperative parameters (γ= 0.058, 0.282, 0.765, 0.579) and the differences between the postoperative 1 month and preoperative parameters (γ= 0.152, 0.467, 0.179, 0.521).
Our results showed that small-incision cataract surgery significantly deepened the anterior chamber and widened its angle. The postoperative change of anterior chamber was inversely influenced by the degree of postoperative chamber depth & angle.
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