Prediction of the fluctuating intervals of intraocular pressure readings in mild and medium myopia after photorefractive keratectomy
- VernacularTitle:中低度近视准分子激光屈光性角膜切削术后眼压测量值波动范围的预测
- Author:
Huang, WU
;
Longyan, YANG
;
Yue, SONG
- Publication Type:Journal Article
- Keywords:
photorefractive;
keratectomy;
myopia;
intraocular;
pressure
- From:
Chinese Journal of Experimental Ophthalmology
2001;19(1):62-63
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo predict the fluctuating intervals of intraocular pressure readings in mild and medium myopia after photorefractive keratectomy（PRK）．MethodsThe intraocular pressure（IOP）readings of 383 eyes，of which spherical equivalent were less than-6.0 diopters（D）before and over 1 a after PRK，were measured with noncontact tonometer（NCT）．The IOP data were analyzed with paired-sample t test，linear correlation and regression．Regression equation was used to predict the fluctuating intervals of IOP readings after PRK．ResultsThe IOP readings after PRK（10.38±2.08）mmHg were lower than those before PRK（15.43±2.74）mmHg．The difference of IOP readings between before and 1 a after PRK was significant （P＜0.001）．The postoperative IOP readings were related to those of preoperation （r＝0.625，P＜0.001）and the regression equation was Y＝0.474X＋3.064［X＝IOP reading before PRK（mmHg），Y＝IOP reading followed over 1 a after PRK（mmHg）］．If IOP reading before PRK was X0，the 95％ tolerant interval of IOP readings followed over 1 a after PRK was 0.5X0-0.1，0.5X0＋6.3（mmHg）．ConclusionIOP readings before PRK can be used to predict the fluctuating intervals of IOP readings in mild and medium myopia after PRK．
