[Early corneal topographic changes after intraocular lens implantation].
OBJECTIVE
The study was designed to investigate the early post-operative effect of the incision of extracapsular cataract extraction (ECCE) with intraocular lens (IOL) implantation on the whole corneal curvature.


METHODS
TMS-1 Topographic System was used to record the changes in corneal refractive power and topography of 42 eyes within 3 months following the surgery through a 11 mm stepped limbal incision.


RESULTS
The corneal topographic map showed that a vertical dumbbell configuration centered at the corneal top presented, the vertical corneal curvature at various radial distances steepened after the operation, the steepening at radial distance of 2.5 mm was much greater than that of 1.5 and 3.5 mm and the steepening at the upper cornea was greater than that at the corresponding lower cornea. The postoperative vertical corneal steepening gradually flattened and the refractive power decreased.


CONCLUSIONS
The topographic map early after ECCE with IOL implantation presents a flattening change of vertical corneal steepening corresponding to a with-the-rule astigmatism which decreases gradually.
Liu
Y
Y
Zhongshan Ophthalmic Center, Sun Yat-sen University of Medical Sciences, Guangzhou.
Li
S
S
D000368:Aged; D001251:Astigmatism / Q000209:etiology / Q000473:pathology*; D003315:Cornea / Q000473:pathology*; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007910:Lenses, Intraocular / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D012029:Refraction, Ocular