To study the change of the dominant eye in the age-related cataract patients before and after surgery, to analyze the correlation between the orientation of the dominant eye and the visual quality, and to observe whether the patients with the change in dominant eye were converted to dizziness. Methods: A total of 44 patients, with age-related cataract between 60 and 80 years old were enrolled. Group A: the non-dominant (secondary) eye served as the surgical eye (n=35); Group B: the dominant eye served as the surgical eye (n=9); Group C: the operation was performed on the contralateral eye after a month (n=28). Measurement of the dominant eye was performed before operation, 1 week after operation and 1 month after the operation. The changes in the uncorrected distance visual acuity (UCDVA), contrast sensitivity (CS), best corrected visual acuity (BCVA) and spherical equivalent (SE) between the dominant and non-dominant eye were compared. Results: The UCDVA, CS, BCVA and SE were significantly improved at 1 day after the operation. There was significant difference between the 2 groups (P<0.05). Preoperative: in group A, the UCDVA, CS, BCVA of ocular dominance were better than the non-dominant eye with significant difference (P<0.05), while there was no significant difference between the SE (P>0.05); in group B, the UCDVA, CS, BCVA in the dominant eye were better than the non-dominant eye's, but the difference was not statistically significant (P>0.05). After operation: the UCDVA, CS and BCVA in the dominant eye in group A and group B were higher than those of the non-dominant eye with statistical difference (P<0.05), but there was no statistical difference between SE (P>0.05). The dominant eye's transformation occurred in group A when the non-dominant eye's postoperative visual quality improved over the leading eye. The transformation rate was 60% in 1 week, and the conversion rate was 80% in 1 month. In group C, the dominant eye reduction rate was 100%, and the visual quality was not significant difference between the two eyes (P>0.05). After the operation, the patients with the dominant eye's transformation felt discomfort, which could be relieved within 1 week. Conclusion: The location of the dominant eye was correlated with uncorrected visual acuity, contrast sensitivity, and the best corrected visual acuity. The dominant eye's transformation occurred when the non-dominant eye's postoperative visual quality improved over the leading eye after the surgery. If the contralateral eye's surgery was performed in a short term, the dominant eye can be returned to the initial state.
目的：研究年龄相关性白内障患者在行白内障超声乳化吸取联合人工晶状体植入手术前后主导眼在两眼之间的变化规律，分析主导眼的定位与视觉质量的相关性，并观察术后主导眼发生转换的患者有无眩晕的症状。方法：收集60~80岁的年龄相关性白内障患者44例，58眼，术前测量主导眼并分为：A组，非主导眼作为手术眼， 35人；B组，主导眼作为手术眼，9人；C组，A，B两组中于1个月后行对侧眼白内障手术患者14人，28眼。分别于手术前1 d、术后1周与1个月时复查主导眼，并比较主导眼与非主导眼未矫正裸眼远视力(UCDVA)、对比敏感度(CS)、最佳矫正视力(BCVA)以及等效球镜(SE)4种指标的变化情况，于术后第1天与1周时询问患者术后有无眩晕的症状。结果：术后1天时手术眼UCDVA，CS，BCVA以及SE较手术前提高明显，差异有统计学意义(P<0.05)。术前：A组主导眼的视觉质量优于非主导眼，UCDVA，CS，BCVA两眼间比较差异有统计学意义(P<0.05)，SE比较差异无统计学意义(P>0.05)；B组双眼视力接近(视力表相差2行之内)，主导眼的UCDVA，CS，BCVA优于非主导眼，但差异无统计学意义(P>0.05)。术后：A组与B组再次测量所得的主导眼的UCDVA，CS，BCVA均高于非主导眼，差异有统计学意义(P<0.05)，但两眼之间SE差异无统计学意义(P>0.05)。A组患者术后非主导眼视觉质量提高超过原主导眼，在1周内主导眼转换为手术眼的转换率为60.0%，1个月时转换率为80%，B组未出现主导眼的转换，C组双眼手术患者1个月内主导眼还原率为100%，且双眼间视觉质量差异无统计学意义(P>0.05)。结论：主导眼的定位与UCDVA，CS，BCVA相关，与SE相关性不明显；非主导眼术后视觉质量提高并超过原主导眼者会发生主导眼的转换，并伴随视物眩晕；双眼短期内行对侧眼手术者，主导眼可还原为术前初始状态。.