scholarly journals Differences in Axial Length and IOL Power Based on Alternative A-Scan or Fellow-Eye Biometry in Macula-Off Rhegmatogenous Retinal Detachment Eyes

2021 ◽  
Author(s):  
Rui Liu ◽  
Hongrong Li ◽  
Qingchen Li
Keyword(s):  
Retinal Detachment ◽  
Axial Length ◽  
Rhegmatogenous Retinal Detachment ◽  
Fellow Eye ◽  
Iol Power

scholarly journals Differences in Axial Length and IOLs Power Basing on Alternative A-Scan or Fellow-Eye Biometry in Macular-Off Rhegmatogenous Retinal Detachment Eyes

2021 ◽  
Author(s):  
Rui Liu ◽  
Hongrong Li ◽  
Qingchen Li
Keyword(s):  
Retinal Detachment ◽  
Axial Length ◽  
Rhegmatogenous Retinal Detachment ◽  
Silicone Oil ◽  
Power Prediction ◽  
Fellow Eye ◽  
Lens Extraction ◽  
Silicone Oil Tamponade ◽  
The Mean ◽  
The Difference

Abstract We observe the potential refractive error basing on alternative A-scan ultrasound and fellow-eye biometry for phacovitrectomy in phakic macula-off rhegmatogenous retinal detachment (RRD) eyes, when IOLMaster fails to obtain data. Vitrectomy without lens extraction was performed for RRD repair. Preoperative axial length was measured using alternative A-scan ultrasound (AL-US). Postoperative axial length in eyes with silicone oil tamponade (AL-SO) and fellow-eye biometry (AL-FE) were obtained using IOLMaster. AL-US, AL-FE and AL-SO were 25.39 ± 2.14 mm, 25.85 ± 2.16 mm and 26.08 ± 2.53 mm, respectively. The Bland-Altman agreements among AL-US, AL-FE and AL-SO were well (95.5%, 21/22 of cases were in LoA). The mean IOLs power calculated using AL-US (Power-US) was 16.81 ± 7.19 D, using AL-FE (Power-FE) was 14.74 ± 6.95 D, and using AL-SO (Power-SO) was 13.54 ± 8.32 D. The difference between AL-US and AL-SO was significant (P < 0.05), while that between AL-FE and AL-SO was not (P > 0.05). The difference between Power-US and Power-SO was significant (P < 0.05), while that between Power-FE and Power-SO was not (P > 0.05). It showed that the alternative A-scan ultrasound leads to significant differences in axial length and IOLs power prediction, while fellow-eye biometry provided similar measurements compared with those of silicone oil-filled eyes after RRD repair.

scholarly journals Differences in Axial Length and IOLs Power Basing on Alternative A-Scan or Fellow-Eye Biometry in Macular-off Rhegmatogenous Retinal Detachment Eyes

2020 ◽  
Author(s):  
Rui Liu ◽  
Hongrong Li ◽  
Qingchen Li
Keyword(s):  
Retinal Detachment ◽  
Axial Length ◽  
Prediction Error ◽  
Rhegmatogenous Retinal Detachment ◽  
Silicone Oil ◽  
Fellow Eye ◽  
Lens Extraction ◽  
Significant Difference ◽  
Silicone Oil Tamponade ◽  
The Difference

Abstract Background: To observe the potential refractive prediction error basing on alternative A-scan ultrasound and fellow-eye biometry for phacovitrectomy in macula-off rhegmatogenous retinal detachment (RRD) eyes, when the optic biometry IOLMaster fails to obtain data.Methods: Phakic macula-off RRD eyes without axial length (AL) measured using IOLMaster were included. Vitrectomy with silicone oil tamponade but not lens extraction was performed. Preoperative AL was measured using A-scan ultrasound, and postoperative AL, as well as fellow-eye biometry, was obtained using IOLMaster. The IOLs power was calculated according to preoperative A-scan, postoperative IOLMaster and fellow-eye AL.Results: AL measured by alternative A-scan (AL-US) was 25.39±2.14 mm, and AL of fellow-eyes (AL-FE) was 25.85±2.16 mm, and AL in eyes with silicone oil tamponade (AL-SO) was 26.08±2.53 mm. The Bland-Altman agreements among AL-US, AL-FE and AL-SO were well (95.5%, 21/22 of cases were in LoA). The mean IOLs power calculated using AL-US (Power-US) was 16.81±7.19 D, using AL-FE (Power-FE) was 14.74±6.95 D, and using AL-SO (Power-SO) was 13.54±8.32 D. The difference between AL-US and AL-SO was significant (P<0.05), while that between AL-FE and AL-SO was not (P>0.05). The difference between Power-US and Power-SO was significant (P<0.05), while that between Power-FE and Power-SO was not (P>0.05).Conclusion: The alternative A-scan ultrasound leads to a significant difference in AL and prediction error in IOLs power, while fellow-eye biometry provided similar results compared with those of silicone oil-filled eyes after RRD repair.

scholarly journals Different Mechanistic Association of Myopia with Rhegmatogenous Retinal Detachment between Young and Elderly Patients

2019 ◽  
Vol 2019 ◽  
pp. 1-6 ◽  
Author(s):  
Min Seok Kim ◽  
Sang Jun Park ◽  
Kyu Hyung Park ◽  
Se Joon Woo
Keyword(s):  
Retinal Detachment ◽  
Elderly Patients ◽  
Axial Length ◽  
High Myopia ◽  
Rhegmatogenous Retinal Detachment ◽  
East Asian ◽  
Age Groups ◽  
Length Distribution ◽  
Bimodal Distribution ◽  
Major Mechanism

Objectives. To investigate the mechanism of rhegmatogenous retinal detachment (RRD) in young and elderly Korean patients based on the results of axial length distribution. Subjects/Methods. We retrospectively reviewed the medical records of 1599 patients with RRD who had bilateral axial length data examined at one center between 2003 and 2018. Axial lengths were measured using ultrasound or IOLMaster500. The frequency of RRD and axial length distribution according to age groups were investigated. Results. Patients with RRD displayed a bimodal distribution across ages with two age groups showing the highest peak at 55–59 years and a second peak at 25–29 years of age. The mean axial length was significantly longer in patients younger than 50 years old than that in patients ≥ 50 years old (26.18 ± 1.86 mm vs. 24.55 ± 1.67 mm, respectively, p < 0.001). The percentage of patients with high myopia (axial length ≥ 26 mm) in patients < 50 years old was higher than that in those ≥ 50 years old (51.9% vs. 15.0%, respectively, p < 0.001; odds ratio, 6.11; 95% confidence interval, 4.83 to 7.74). Conclusions. We found a difference in the prevalence of myopia between young and elderly patients with RRD, which corresponds to a bimodal distribution of RRD incidence in East Asian countries. Our data indicate that myopia or high myopia-induced early vitreous detachment appears to be a major mechanism of occurrence of RRD in young East Asian patients, while senile vitreous liquefaction and detachment is the main mechanism of RRD in elderly patients.

scholarly journals Changes in Axial Length After Vitrectomy for Rhegmatogenous Retinal Detachment With Associated Choroidal Detachment

2020 ◽  
Author(s):  
Jipeng LI ◽  
Jun XU ◽  
Meng ZHAO
Keyword(s):  
Retinal Detachment ◽  
Axial Length ◽  
Rhegmatogenous Retinal Detachment ◽  
Silicone Oil ◽  
Choroidal Detachment ◽  
Pathological Myopia ◽  
Number Of Patients ◽  
Significant Difference ◽  
Potential Factors ◽  
Lens Power

Abstract BACKGROUND The precise pre-operative measurements of axial length (AL) are essential for calculating intraocular lens power in cases undertaking pars plana vitrectomy (PPV) combined with cataract surgery. The changes in AL after PPV for rhegmatogenous retinal detachment (RRD) combined with choroidal detachment (CD) has not been reported. Here, we studied the postoperative AL changes in patients with RRD combined with CD (RRD-CD) and compared the changes in patients with RRD and tractional retinal detachment (TRD). METHODS In this retrospective cohort study, medical records of 129 patients who received PPV combined with silicone oil tamponade from January 2015 to December 2018 were reviewed. Patients included were divided into three groups, RRD-CD, RRD, and TRD. All patients had received AL measurements before PPV and before silicone oil removal (SOR). The changes in AL of three groups before PPV and before SOR were compared. The potential factors related to AL changes were analyzed. RESULTS The number of patients included in RRD-CD, RRD, TRD groups were 41, 43, and 45, respectively. In RRD-CD group, AL measured before SOR was longer than that measured before PPV with a median of 1.01 [0.37,1.79] mm (p = 0.02). There was no such significant difference in RRD group (0.15 [0.04, 0.42] mm, p = 0.58) or TRD group (0.07[-0.03,0.15] mm, p = 0.53). The amplitude of AL changes in RRD-CD group was greater than that in RRD group (p < 0.001) and that in TRD group (p < 0.001). AL increased 0.06 mm (0.06, R2 = 0.11, p = 0.03) in RRD-CD group and 0.02 mm (0.02, R2 = 0.11, p = 0.01) in RRD group when the IOP before SOR was 1 mmHg higher than that before PPV. After adjusting the effect of the factors as the presence of pathological myopia (p = 0.45), IOP before PPV (p = 0.86), sustained elevation of IOP in post-PPV follow up (p = 0.51), AL in RRD-CD group was 11.42 times (3.54, 46.80) more likely to increase for more than 1 mm compared to that in RRD group (p < 0.001, AIC = 86.15). CONCLUSION Patients with RRD-CD are very likely to have postoperative elongation of AL. The primary IOL implantation using pre-operative AL data may cause significant refractive error in combined surgery in patients with RRD-CD.

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