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目的分析应用 HolladayⅡ公式计算角膜屈光手术后人工晶状体(IOL)植入度数的准确性。方法角膜屈光手术后患者15例(15只眼),分成两组行超声乳化白内障吸除术联合 IOL 植入术。第一组(8只眼)应用 HolladayⅡ公式进行 IOL 度数计算,角膜屈光度根据手术医师经验计算获得,为 KS。第二组(7只眼)应用同一公式,但角膜屈光度应用患者的屈光度数计算获得,为 KR。比较超声乳化白内障吸除术后1个月的屈光度数与术前的预期屈光度数,并应用两者差的绝对值作为标准进行分析。结果两组超声乳化白内障吸除术后1个月的角膜屈光度数与术前预期屈光度数差的绝对值平均值依次为(0.90±0.22)D 和(0.99±0.22)D。结论应用 HolladayⅡ公式计算角膜屈光手术后行超声乳化白内障吸除术时植入 IOL 度数的准确性相对较高。KS 与 KR 在 HolladayⅡ公式中应用的差异无统计学意义。(中华眼科杂志,2006,42:888-891)
Objective To analyze the accuracy of using Holladay Ⅱ formula to calculate the degree of IOL implantation after corneal refractive surgery. Methods Fifteen patients (15 eyes) underwent corneal refractive surgery were divided into two groups undergoing phacoemulsification combined with IOL implantation. In the first group (8 eyes), the Holladay II formula was used to calculate the IOL. The corneal refractive power was calculated according to the surgeon’s experience and was KS. The second group (7 eyes) applied the same formula, but the corneal refractive power was calculated using the patient’s refractive index as KR. The refractive power of one month after phacoemulsification and preoperative refractive power were compared, and the absolute value of the difference between the two was used as the standard for analysis. Results The absolute value of the difference between the corneal refractive power and the expected preoperative refractive power at one month after phacoemulsification was (0.90 ± 0.22) D and (0.99 ± 0.22) D, respectively. Conclusion Holladay Ⅱ formula is used to calculate the accuracy of implanting IOL in phacoemulsification after corneal refractive surgery. There was no significant difference between KS and KR in Holladay II formula. (Chinese Journal of Ophthalmology, 2006,42: 888-891)