目的：在硅油取出联合白内障手术患者中，使用扫频源光学相干断层扫描生物测量仪OA-2000进行生物测量，比较10种人工晶状体(IOL)屈光力计算公式的准确性。方法：回顾性分析2021年3月—7月于中山大学中山眼科中心接受硅油取出联合白内障手术的患者共62例(62眼)，所有患者均使用扫频源光学相干断层扫描生物测量仪OA-2000进行生物学参数测量。计算并比较新公式[Barrett Universal II (BUII)、Emmetropia Verifying Optical(EVO) 2.0、Hill-Radial Basis Function (Hill-RBF) 3.0、Hoffer QST、Kane、Pearl-DGS]及传统公式(Haigis、Hoffer Q、Holladay 1、SRK/T)的预测准确性，主要评价指标为绝对预测误差中位数(MedAE)及平均绝对预测误差(MAE)。按眼轴长度≤23 mm(组1)，>23 mm且≤26 mm(组2)与>26 mm(组3)进行亚组分析。结果：6个新公式、Haigis、SRK/T公式均出现近视漂移(-0.47 ~-0.27 D，P<0.05)，而HofferQ及Holladay 1公式无系统误差(P>0.05)。Kane公式的MedAE(0.55 D)及MAE(0.81 D)最小，但公式间比较差异无统计学意义(P>0.05)。组1中所有公式均出现近视漂移(-1.46~ -1.25 D，P<0.05)，而其他亚组比较差异无统计学意义(-0.32 ~ 0.41 D，P>0.05)。在组1中，Pearl-DGS公式的MedAE(0.97 D)及MAE(1.26 D)最小，且优于Hill-RBF 3.0(P=0.01)及SRK/T公式(P=0.02)；组2中，Kane公式具有最小的MedAE(0.44 D)及MAE(0.66 D)；组3各个公式屈光预测准确性比较差异无统计学意义(P>0.05)。结论：在使用OA-2000进行术前生物测量时，Kane公式在接受硅油取出联合白内障手术患者中的预测准确性较高；而眼轴长度≤23 mm时，Pearl-DGS公式可能更为准确。

Objective: To compare the accuracy of 10 intraocular lens (IOL) power calculation formulas in patients undergoing combined silicone oil removal and cataract surgery, biometry is performed using the swept-source optical coherence tomography biometer OA-2000. Methods: A retrospective analysis. A total of 62 patients (62 eyes) who underwent combined silicone oil removal and cataract surgery in Zhongshan Ophthalmic Center, Sun Yat-sen University from March to July in 2021 were enrolled. Preoperative biometry was performed by OA-2000 in all patients. New-generation formulas (Barrett Universal II [BUII], Emmetropia Verifying Optical [EVO] 2.0, Hill-Radial Basis Function [Hill-RBF] 3.0, Hoffer QST, Kane and Pearl-DGS) and traditional formulas (Haigis, Hoffer Q, Holladay 1 and SRK/T) were evaluated. The median absolute prediction error (MedAE) and mean absolute prediction error (MAE) were the main parameters used to assess accuracy. Subgroup analyses were performed based on the axial length of 23 mm and 26 mm. Results: Six new-generation formulas, Haigis, and SRK/T showed myopic shift (-0.47 ~ -0.27 D, P<0.05), while no systematic bias was found in Hoffer Q and Holladay 1 displayed (P>0.05). The smallest MedAE (0.55 D) and MAE (0.81 D) were found in Kane formula, but there was no statistically significant difference compared with other formulas (P>0.05). The myopic shift (-1.46 ~ -1.25 D, P<0.05) in eyes shorter than 23 mm were found in all formulas, while there was no significant systematic bias (-0.32 ~ 0.41 D, P>0.05) in other subgroups. In axial length shorter than 23 mm, the Pearl-DGS formula stated the smallest MedAE (0.97 D) and MAE (1.26 D), and was significantly more accurate than Hill-RBF 3.0 (P=0.01) and SRK/T (P=0.02). In eyes with an axial length between 23 mm and 26 mm, the Kane formula had the lowest MedAE (0.44 D) and MAE (0.66 D). No significant difference was found in eyes longer than 26 mm. Conclusion: The Kane formula showed the highest accuracy in patients undergoing combined silicone oil removal and cataract surgery measured by OA-2000, whereas the Pearl-DGS formula could be more accurate in eyes with an axial length shorter than 23 mm.

目的：了解玻璃体切除硅油填充术后患者(face-down positioning，FDP)依从性的相关影响因素。方法：采用随机抽样研究的方法，选取2018年1月至2019年12月于无锡市人民医院眼科行玻璃体切除硅油填充术后的患者100例，采用问卷调查对一般资料、FDP可能发生的反应和依从性进行调查。采用SPSS 19.0进行统计分析。结果：患者性别、对疾病的重视程度与FDP的依从性有显著差异(P<0.05)，但家庭支持系统与FDP的依从性差异无统计学意义(P>0.05)。患者术后第1天对FDP依从性的主要影响因素依次为呼吸不畅(84%)、睡眠不佳(78%)、肩颈部不适(10%)；术后第3天的主要影响因素依次为呼吸不畅(66%)、腰酸背痛(50%)、睡眠不佳(39%)；术后第5天的主要影响因素依次为肢体麻木(70%)、腰酸背痛(87%)、睡眠不佳(30%)、肩颈部不适(18%)以及肘关节疼痛(10%)。结论：影响患者依从性的主要因素主要有性别、对疾病的自我重视程度以及FDP引起的不适症状。需加强对高危因素的识别，不同病情时段给予征对性的宣教和指导，以提高患者对FDP的依从性。

Objective: To investigate the influencing factors of compliance of patients with silicone oil tamponade after vitrectomy. Methods: A total of 100 patients with silicone oil tamponade after vitrectomy in Wuxi People’s Hospital of Jiangsu Province from January 2018 to December 2019 were selected by random sampling method.The general information, possible reaction, and compliance of face-down positioning (FDP) were investigated by questionnaire. SPSS 19.0 was used for statistical analysis. Results: There were significant differences in patients’gender, attention to disease and FDP compliance (P<0.05), but there was no significant difference between family support system and FDP (P>0.05). The main influencing factors of FDP compliance were dyspnea (84%), poor sleep (78%), the discomfort of shoulder and neck (10%); on the third day after operation, the main influencing factors were dyspnea (66%), low back pain (50%) and poor sleep (39%); on the fifth day, the main influencing factors were numbness of the limbs (70%), low back pain (87%) and poor sleep (30%), the discomfort of shoulder and neck (18%) and elbow pain (10%). Conclusion: The main factors that affect the compliance of patients are gender, self-awareness of the disease and discomfort caused by FDP. It is necessary to strengthen the identification of high-risk factors, and give symptomatic education and guidance at different stages of illness, to improve the compliance of patients to FDP.

目的：评估硅油填充术后眼压对角膜内皮细胞的影响及变化特点。方法：选取2019年1月1日至9月30日在佛山市第二人民医院眼科中心行玻璃体切除联合硅油注射的患者共131名，分为高眼压组(n=80)和正常眼压组(n=51)。高眼压组术后任意一次测眼压>21 mmHg，正常眼压组术后眼压均≤21 mmHg。比较填充硅油前与取硅油时的角膜内皮细胞参数测量值。结果：高眼压组的平均眼压为20.79 mmHg，正常眼压组的平均眼压为14.70 mmHg(P<0.001)。取硅油时，两组角膜内皮细胞密度(corneal endothelial cell density，ECD)均明显减少，平均内皮细胞面积均明显增大(P<0.05)，高眼压组内皮细胞大小变异系数(coefficient of variation of endothelial cell size，CV)明显变大(P<0.05)。高眼压组ECD丢失率(6.3%)高于正常眼压组(3.5%)；其中，高眼压组中术后1~6周内的眼压升高(7.1%)、眼压≥40 mmHg(7.3%)对角膜内皮细胞影响最大。ECD丢失与眼压变化有显著相关性(r=0.176，P=0.044)。结论：硅油填充后高眼压是角膜内皮细胞丢失的重要危险因素。

Objective: To evaluate the effect of intraocular pressure (IOP) on corneal endothelial cells after silicone oil tamponade. Methods: Patients (n=131) received vitrectomy with silicone oil injection in Ophthalmology Center in Second People’s Hospital of Foshan City from January 1st to September 30th 2019 were divided into the high IOP group (n=80) and normal IOP group (n=51). IOP was >21 mmHg at any time in the high IOP group and was ≤21mmHg in the normal IOP group after surgery. The values of corneal endothelial cells before filling with silicone oil and before removing silicone oil were compared.Results: The average IOP was 20.79 mmHg in the high IOP group, and 14.70 mmHg in the normal IOP group (P<0.001). The number of endothelial cells (ECD) was reduced, but the average endothelial cell area was increased (P<0.05) in both groups. The coefficient of variation of endothelial cell size in high IOP group was increased (P<0.05). ECD loss rate was 6.3% in the high IOP group and 3.5% in normal IOP group. Increased IOP within 1–6 weeks after surgery (7.1%) and IOP ≥40 mmHg (7.3%) had the greatest impact on ECD. ECD loss was correlated with IOP (r=0.176, P=0.044). Conclusion: High intraocular pressure after silicone oil filling is an important risk factor for the loss of corneal endothelial cells.Keywords intraocular pressure; corneal endothelium; silicone oil; vitrect