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Introducción: La artroplastia total de cadera es una de las intervenciones quirúrgicas más frecuentes en el contexto hospitalario. Sin embargo, sigue desconociéndose el método ideal para manejar el dolor postoperatorio. Las técnicas de analgesia multimodal basadas en la anestesia regional se encuentran entre las soluciones más prometedoras. Objetivos: El objetivo de este estudio fue evaluar el dolor postoperatorio tras la artroplastia total de cadera, de acuerdo con si se realizaron, o no, bloqueos del nervio periférico (bloqueo femoral, bloqueo de la fascia iliaca y bloqueo del grupo de nervios pericapsulares). Se midió el consumo de morfina intravenosa durante la estancia del paciente en la unidad de cuidados posanestésicos, así como el número de rescates con opioides transcurridas 24 y 48 h de la intervención. Como objetivos secundarios, se establecieron la prevalencia de la lesión nerviosa, la prolongación del bloqueo cuadricipital y el consumo de morfina, de acuerdo con otras variables de interés. Materiales y métodos: En este estudio retrospectivo observacional, se recopilaron datos de la historia clínica digital de 656 pacientes de cirugía traumatológica de abril de 2018 a agosto de 2020, con los criterios de inclusión siguientes: mayores de 18 años, ASA I-III, artroplastia total de cadera primaria con anestesia general o anestesia subaracnoidea (solo con bupivacaína hiperbárica) y uso de levobupivacaína para el bloqueo del nervio periférico. Resultados: Se seleccionó un total de 362 pacientes. La indicación quirúrgica principal fue coxartrosis (61,3%), seguida de fractura de cadera (22,6%). Se realizaron bloqueos del nervio periférico en 169 pacientes (66,3% femoral, 27,7% PENG, y 6% de fascia ilíaca). El consumo medio postoperatorio de opioides en la UCPA fue inferior en los pacientes que recibieron bloqueo PENG (2,2 mg) o femoral (3,27 mg), en comparación con los que no recibieron ninguno de los dos (6,69 mg)...(AU)

Introduction: Total hip arthroplasty is one of the most frequent surgical interventions in the hospital setting. Nonetheless, the ideal method to manage post-operative pain is still unknown. Multimodal analgesia techniques based on regional anaesthesia are amongst the most promising solutions. Objectives: The aim of this study was to evaluate postoperative pain after total hip arthroplasty according to whether peripheral nerve block was performed (femoral block, fascia iliaca block and pericapsular nerve group block). Intravenous morphine consumption during the patient's stay in the post-anaesthesia care unit was measured, as well as the number of opioid rescues at 24 and 48h post intervention. As secondary objectives, the prevalence of nerve injury, prolonged quadricipital block, and morphine consumption were established according to other variables of interest. Materials and methods: In this observational retrospective study, data was collected from the electronic medical record of 656 traumatological surgery patients from April 2018 to August 2020, with the following inclusion criteria: over 18 years old, ASA I-III, primary total hip arthroplasty under general anaesthesia or subarachnoid anaesthesia (only with hyperbaric bupivacaine) and use of levobupivacaine for peripheral nerve block. Results: A total of 362 patients were selected. The main surgical indication was coxarthrosis (61.3%), followed by hip fracture (22.6%). Peripheral nerve blocks were performed on 169 patients (66.3% femoral, 27.7% PENG, and 6.0% fascia iliaca). Mean postoperative opioid consumption in PACU was lower in patients in who received a PENG (2.2 mg) or a femoral (3.27 mg) block, compared to those who received neither (6.69 mg). There were no differences in opioid rescues at 24 and 48h after the procedure...(AU)

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Introduction: We present a case of capsular block syndrome that occurred after intravitreal injection of ranibizumab in a patient with age-related macular degeneration, which has not been reported in the literature. Case Presentation: A 78-year-old male presented with decreased visual acuity in the right eye. Slit-lamp examination findings were unremarkable; however, AMD was diagnosed based on fundus examination, fluorescein angiography, and optical coherence tomography (OCT). Subsequently, the patient was administered an intravitreal injection of ranibizumab. A slit-lamp examination revealed residual cortical material, numerous inflammatory cells, and posterior capsular distension 1 week after the injection. OCT showed an adhesion of the intraocular lens to the continuous curvilinear capsulorhexis site. The patient's vision improved following Nd:YAG laser posterior capsulotomy. Conclusion: Meticulous cortical removal is crucial during phacoemulsification to prevent capsular block syndrome. In patients with a history of cataract surgery, verifying the absence of residual cortical material before administering an intravitreal injection of ranibizumab is important.

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BACKGROUND: Late-onset capsule block syndrome (CBS) is a rare complication of cataract phacoemulsification and the implantation of a posterior chamber intraocular lens (PCIOL), which manifests six months to years after surgery. The hallmark of CBS is the formation of an opaque liquid substance between the implanted intraocular lens (IOL) and the posterior capsule. However, its pathogenesis remains unclear. CASE PRESENTATION: A 64-year-old female patient with chronic angle-closure glaucoma (axis length < 21 mm) underwent trabeculectomy surgery combined with phacoemulsification and PCIOL. After a 4-year follow-up, a decline in visual acuity occurred in her right eye due to the location of opaque fluid in the visual axis and distension of the capsular bag. The initial course of action was to release the trapped fluid. Neodymium: yttrium-aluminum-garnet (Nd: YAG) laser capsulotomy could not be employed due to her non-dilating pupil and high extension of the posterior capsule. Subsequently, anterior capsule peeling and anterior segment vitrectomy surgery were performed. The depth of the anterior chamber (ACD), the distance between the face of the retro-IOL and the posterior capsule, the best-corrected visual acuity (BCVA), and the visual quality (VQ) were measured both before and after surgery. Inflammatory cytokine levels in the opaque substances (OS) trapped between the PCIOL and the posterior capsule were assessed using a flow cytometer and compared to normal statistical data in aqueous humor. After surgery, the patient experienced a significant improvement in BCVA and VQ. The distance between the face of the retro-IOL and the posterior capsule was on the verge of disappearing. However, ACD did not differ between pre- and post-operatively. Interleukin-8 (IL-8) and basic fibroblast growth factor (BFGF) concentrations were higher in the OS than in aqueous humor, especially in the former. However, the concentration of vascular cell adhesion molecule (VCAM) in the OS was lower than in aqueous humor. CONCLUSIONS: Anterior segment vitrectomy surgery proved to be a successful treatment for late-onset CBS, presenting a challenging case. In the human lens, inflammatory cytokines originating from the opaque substances may contribute to abnormal metabolism in the sealed area, a consequence of late-onset CBS.

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INTRODUCTION: Total hip arthroplasty is one of the most frequent surgical interventions in the hospital setting. Nonetheless, the ideal method to manage post-operative pain is still unknown. Multimodal analgesia techniques based on regional anaesthesia are amongst the most promising solutions. OBJECTIVES: The aim of this study was to evaluate postoperative pain after total hip arthroplasty according to whether peripheral nerve block was performed (femoral block, fascia iliaca block and pericapsular nerve group block). Intravenous morphine consumption during the patient's stay in the post-anaesthesia care unit was measured, as well as the number of opioid rescues at 24 and 48 h post intervention. As secondary objectives, the prevalence of nerve injury, prolonged quadricipital block, and morphine consumption were established according to other variables of interest. MATERIALS AND METHODS: In this observational retrospective study, data was collected from the electronic medical record of 656 traumatological surgery patients from April 2018 to August 2020, with the following inclusion criteria: over 18 years old, ASA I-III, primary total hip arthroplasty under general anaesthesia or subarachnoid anaesthesia (only with hyperbaric bupivacaine) and use of levobupivacaine for peripheral nerve block. RESULTS: A total of 362 patients were selected. The main surgical indication was coxarthrosis (61.3%), followed by hip fracture (22.6%). Peripheral nerve blocks were performed on 169 patients (66.3% femoral, 27.7% PENG, and 6.0% fascia iliaca). Mean postoperative opioid consumption in PACU was lower in patients in who received a PENG (2.2 mg) or a femoral (3.27 mg) block, compared to those who received neither (6.69 mg). There were no differences in opioid rescues at 24 and 48 h after the procedure. Nerve injury incidence was low (.8%), and not associated with nerve blocks. The incidence of prolonged quadricipital paralysis was also low (1.3%), and was mainly associated with femoral nerve block (75% of cases). CONCLUSIONS: This retrospective study supports the use of regional blocks as opioid-sparing techniques, highlighting their role in rapid functional recovery with no motor impairment.

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Introduction: Lacteocrumenasia is a relatively rare postoperative complication of cataract surgery. It is classified as a late-onset type of capsular block syndrome (CBS) and is often accompanied by myopia; however, its mechanism is not clearly understood. Case Presentation: We report a case of a 62-year-old male patient having CBS with myopia. The patient was treated with neodymium-yttrium aluminum garnet (Nd-YAG) laser posterior capsulotomy. We measured and compared the depth of the intraocular lens using anterior segment optical coherence tomography (AS-OCT) before and after laser treatment. Treatment resulted in refraction improvement of more than 1.0 diopters. The intraocular lens depth before and after Nd-YAG laser irradiation had very mild changes of less than 0.05 mm, which did not explain the refractive changes. Conclusion: Myopia in the early-onset type of CBS is caused by anterior deviation of the intraocular lens; however, the evaluation of this case using AS-OCT suggested that an abnormal intraocular lens position may not be involved in late-onset CBS.

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Introduction: Pseudophakic pupillary block angle-closure glaucoma is an uncommon complication following uneventful cataract surgery with posterior chamber intraocular lens (IOL) implantation. Interestingly, capsular block syndrome (CBS) has been reported as another plausible cause of pseudophakic pupillary block angle-closure glaucoma, especially in the early postoperative period. Unlike early postoperative CBS, late postoperative CBS is not associated with a shallow anterior chamber, myopic shift, or elevated intraocular pressure. We report a case of late postoperative CBS presenting with an acute-onset pupillary block angle-closure attack occurring 13 years after uneventful cataract surgery with posterior chamber IOL implantation, which has not been reported in the literature. Case Presentation: An 87-year-old male diagnosed with pseudoexfoliation syndrome developed pseudophakic pupillary block following uneventful cataract surgery with posterior chamber IOL implantation. Late-onset CBS has been identified as the underlying cause of the pupillary block. The combination of zonular laxity observed in pseudoexfoliation syndrome and the presence of a Soemmering ring are potential predisposing factors for this condition. After performing laser peripheral iridotomy (LPI) followed by Nd: YAG capsulotomy, the pupillary block was resolved and vision was improved. Conclusion: CBS should be considered as a potential cause of pseudophakic pupillary block, even in the late postoperative period. The management of late-onset CBS accompanied by pupillary block angle-closure glaucoma typically includes LPI to eliminate the pupillary block, followed by Nd: YAG capsulotomy.

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We present a novel use of femtosecond laser to treat capsular block syndrome (CBS) in a patient with dense opaque capsular block, who presented 16 years postcataract surgery. The extensive posterior capsular distension and densely opaque, milky fluid trapped behind the intraocular lens (IOL) prevented the use of neodymium-doped yttrium aluminum garnet (Nd: YAG) laser posterior capsulotomy as primary treatment. Intra-operative optical coherence tomography enabled visualization of the posterior capsule and iris hooks were used to increase the pupillary diameter to enable femtosecond laser-assisted posterior capsulotomy to be performed in a minimally invasive technique. CBS was relieved successfully and Nd: YAG laser performed subsequently to remove residual posterior capsule opacification safely and with good visual outcomes. This method avoids risks associated with posterior vitrectomies and compromised IOL stability from inadvertent capsular bag damage, and adds to the expanding uses of femtosecond laser technology.

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Purpose: To report our findings in a case that had an accumulation of a translucent fluid between the intraocular lens (IOL) and posterior lens capsule one day after vitrectomy for a vitreous hemorrhage. Observations: A 67-year-old woman was diagnosed with diabetes 20 years before the vitrectomy and was treated with panretinal photocoagulation (PRP) for proliferative diabetic retinopathy (PDR) 14 years earlier. She underwent cataract surgery with an implantation of an IOL 4 years earlier. She was referred to our hospital because of a vitreous hemorrhage, and we performed uneventful vitrectomy. However, the day after the operation, a translucent liquid substance that resembled liquefied aftercataract was observed in the lens capsule bag. With time, the liquid substance became cloudy. The opacification progressed for two years after the vitrectomy, and her visual acuity decreased. We then performed neodymium: YAG (Nd: YAG) laser posterior capsulotomy, and the cloudy liquid dispersed into the vitreous and the visual acuity improved. Conclusions and importance: Our findings indicate that liquified aftercataract-like substance can form after vitrectomy in a pseudophakic eye. We suggest that the aqueous humor might flow into the space behind the IOL during or just after the vitrectomy and was trapped behind the IOL optics. Then, the proliferating lens epithelial cells might be dissolved forming the white liquid substance immediately after the surgery.

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This report describes an unusually delayed presentation of capsular bag distension syndrome (CBDS), which was found to be associated with Propionibacterium acnes (P. acnes) endophthalmitis. Our patient presented with a gradual decrease in vision after uneventful cataract surgery done 13 years back. On examination, there was a thick turbid fluid entrapped behind the intraocular lens (IOL). Ultrasound biomicroscopy (UBM) confirmed the presumed diagnosis. The case was managed by pars plana vitrectomy (PPV) with posterior capsulotomy, and the entrapped turbid fluid was aspirated and sent for histopathology, which revealed a positive growth of P. acnes. The patient had excellent outcomes with complete resolution post-operatively.

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INTRODUCTION: The aim of this study is to verify if the shoulder anterior capsular block (SHAC), combined with other nerve blocks, is effective in relieving shoulder pain, avoiding motor block and allowing an early rehabilitation program. METHODS: Seventy-five consecutive patients with painful shoulder were treated with the SHAC, alone (30 patients) or in combination with a suprascapular nerve block (SSnb: 25 patients) or with pectoralis and serratus plane block (PECS-2: 20 patients). All blocks were performed with 0.2% ropivacaine plus 8 mg dexamethasone. All patients were treated with three-weekly physiotherapy sessions for the following 2 weeks and then with home exercises. RESULTS: The post-procedural analgesic effect was strong in all groups, with a mean change in numeric rating scale (NRS) values of -6.05 in group 1, -6.25 in group 2, and -6.19 in group 3 (p < .0001), allowing all patients to complete an immediate physiotherapy session. Only a few patients needed to repeat the procedure 1 week after the first treatment for the recurrence of pain. From the treatment to the end of the follow-up, we noted a further drop in mean pain NRS values of 1.90 in group 1 and 1.80 in groups 2 and 3. No difference in effect over time was observed among the different groups. No adverse event or motor block was recorded. CONCLUSION: This study demonstrates that the SHAC, alone or in combination with other peripheral nerve blocks, is an attractive alternative for shoulder pain management, especially when physiotherapy is required to recover shoulder function.

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Retro-intraocular lens (IOL) irrigation-aspiration is of paramount importance in order to remove the viscoelastic substance from the retro-IOL space and to prevent any early post-operative capsular block syndrome. However, manoeuvring the IOL to reach the retro-IOL space may be difficult at the hands of novice surgeons despite the use of coaxial or bimanual irrigation-aspiration probes. We describe a simpler and safer technique in order to facilitate the removal of this retro-IOL viscoelastic substance using a 26-Gauge bent-cannula mounted on a 2-ml syringe. The fluid is injected forcefully along with sideways movement of cannula in a single-plane to displace the viscoelastic substance.

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The article describes 5 cases of capsular block syndrome (CBS). This late cataract surgery complication has not been sufficiently covered in Russian scientific literature. Diagnostics were based mainly on slit-lamp biomicroscopy and anterior segment optical coherence tomography. In all cases, examination revealed a retro-optical space filled with content of different transparency and homogeneity (transparent liquid, opaque liquid, regenerative lens material). The condition caused visual acuity to decrease in each case. Patient management included follow-ups (2 cases), yttrium-aluminum-garnet laser (YAG-laser) puncture of posterior lens capsule (1 case) or YAG-laser posterior capsulotomy (2 cases). YAG-laser treatment resulted in visual functions improvement.

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PURPOSE: Capsular bag distension syndrome is to be seen as a relatively rare complication after cataract surgery. MATERIALS AND METHODS: We describe our experience of late-onset capsular bag distension syndrome with one case onset 4 years after cataract surgery. Nowadays diagnostic imaging methods were used. The literature was reviewed to summarize the diagnosis, classification, use of diagnostic aids, and the current treatments for the capsular bag distension syndrome. Visual acuity was assessed using the ETDRS (Early Treatment Diabetic Retinopathy Study) chart. DISCUSSION: A 72-year-old woman presented with decreased visual acuity and blurred vision 4 years after phacoemulsification with continuous curvilinear capsulorhexis (CCC) and in-the-bag IOL implantation. After the slit lamp examination, patient was investigated with Scheimpflug camera (OCULUS Pentacam HR) and anterior segment spectral domain OCT (Optovue, Avanti RTVue XR), which confirmed the diagnosis of capsular block syndrome. Aspiration of the turbid fluid behind the lens and capsular bag lavage resulted in resolution of her symptoms. Aspirated fluid was examined. We have observed no CBS recurrence. CONCLUSION: CBS is the relatively rare complication of the standard cataract surgery, which can occur during surgery and in a postoperative period. CBS can be solved successfully after regular diagnosis using modern imaging methods.

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Introduction:Postoperative capsular bag distension syndrome (CBDS) is a rare complication of cataract surgery which might occur in the early postoperative period, as well as several years after uncomplicated surgery. The aim of this study was to review the current evidence on postoperative capsular bag distension syndrome. Material and Methods: PubMed and Web of Science were used for literature search. Results: The typical presentation involves deterioration in visual acuity, unexpected myopic shift or less frequently hyperopia. In eyes with clear capsular fluid and no posterior capsule opacification, usually in the late postoperative period, CBDS can be asymptomatic. Risk factors for developing CBDS include retained ophthalmic viscoelastic device, inadequate subincisional cortex cleaning, apposition between the intraocular lens (IOL) and the capsular bag, postoperative inflammation and IOL sequestration with Propionibacterium acnes. Visualization of the CBDS can be aided with Scheimpflug imaging, ultrasound biomicroscopy, and particularly anterior-segment optical coherence tomography. Conclusion:Nd:YAG posterior capsulotomy, and in some cases anterior capsulotomy, is accepted as a standard and effective CBDS treatment. Surgical approach could be beneficial in cases suspected of Propionibacterium acnes presence or when it is impossible to perform Nd:YAG posterior capsulotomy.

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Traditional hydrodissection may cause posterior capsule rupture (PCR) if excessive fluid accumulates. In this study, we describe the successful application of a novel minimal fluid hydrodissection technique in 100 consecutive cataract surgery cases. This technique separates the nucleus from the capsule utilizing low hydrostatic pressure and precise kinetic movement of a small volume (around 0.2 cc) of balanced salt solution. There were no instances of PCR. This technique is suitable for a range of cases, including femtosecond laser-assisted cataract surgery and posterior subcapsular cataract.

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PURPOSE: To evaluate the effects of irrigation dynamic pressure-assisted hydrodissection (irrigation-hydro: iH) on intraocular pressure (IOP) and the posterior chamber-anterior hyaloid membrane (PC-AHM) barrier in porcine eyes. STUDY DESIGN: Experimental. METHODS: In Experiment 1, IOP was recorded while irrigating the anterior chamber (AC), during iH, and during phacoemulsification and aspiration in 20 porcine eyes using bottle heights of 50, 70, and 90 cm. Under the same conditions, IOP was recorded during conventional manual cortical cleaving hydrodissection (manual hydro: mH) in 20 porcine eyes. In Experiment 2, after iH, ACs were perfused for 5 seconds with balanced salt solution containing 1.0-µm fluorescein beads in 20 porcine eyes using bottle heights of 70, 118, and 169 cm. PC-AHM barrier staining grade was evaluated by the Miyake-Apple view. RESULTS: iH proved successful in all cases. In Experiment 1, IOP during iH was relatively stable and peak IOP was below the baseline bottle height-dependent pressure. No eyes showed a peak IOP > 75 mmHg during iH, but 8 eyes showed a peak IOP > 75 mmHg during mH. In Experiment 2, neither AHT nor ruptured capsules were observed at any bottle height. CONCLUSION: Unlike mH, IOP during iH was relatively stable without any high peak IOP. Thus, iH offers a simple technique for reducing peak IOP and avoiding disturbance of the PC-AHM barrier.

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Femtosecond laser-assisted cataract surgery (FLACS) changes the intraoperative environment due to the generation of intracapsular gas that induces a high intracapsular volume. Manual hydrodissection (mH) may induce high intracapsular pressure (ICP) and additional intracapsular volume, thereby leading to capsular block syndrome (CBS). Since the phaco-sleeve irrigation-assisted hydrodissection (iH) technique is used to initially groove and split the lens and remove the intracapsular gas, this can reduce the intracapsular volume while bypassing the intracapsular lens prior to the hydrodissection. As iH uses the phaco tip to intentionally vacuum the intraocular fluid for use in inducing the irrigation jet from the sleeve side holes, the ICP cannot surpass the set irrigation pressure, thereby avoiding CBS. Using this technique, we performed FLACS without CBS in 310 cataract eyes. Our findings suggest that the iH technique may be beneficial for patients by preventing CBS during FLACS.

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PURPOSE: We report a case of late-onset capsular block syndrome, which resulted in a misdiagnosis of intraocular lens (IOL) opacity. CASE SUMMARY: A 59-year-old man visited our clinic with reduced visual acuity in the right eye from 1 year prior. He had undergone uncomplicated bilateral cataract surgery by phacoemulsification with IOL implants at another hospital 10 years before. There was no specific history with the exception of hypertension. After being diagnosed in the ophthalmology clinic with IOL degeneration and opacity in the right eye, he was referred to our hospital for IOL replacement. Upon examination, his right uncorrected visual acuity was 0.06 and intraocular pressure was 22 mmHg. The refractive error could not be checked due to IOL opacity. Slit-lamp microscopy revealed a cloudy, milky IOL. Anterior-segment optical coherence tomography of the right eye showed retention of a highly reflective material in the lens capsule behind the IOL. Posterior capsule enlargement of the right eye was confirmed on ultrasound biomicroscopy. After neodymium-doped yttrium aluminium garnet (Nd:YAG) laser capsulotomy was performed, the homogeneous space disappeared and the eye recovered normal visual acuity. CONCLUSIONS: Capsular block syndrome is a rare complication that can occur shortly (1 day to 2 days) after cataract surgery. Late-onset capsular block syndrome, which occurs 10 years after surgery differs from typical clinical manifestations. Thus, capsular block syndrome is an important consideration upon the presentation of opacification due to IOL degeneration.

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A young patient underwent phacoemulsification with endocapsular implantation of trifocal toric lens in both eyes (AT LISA tri toric 939 MP, Carl-Zeiss, Germany). One-week postsurgery, he developed capsular block syndrome (CBS) in both eyes. There was deterioration of uncorrected visual acuity at 1-week postsurgery, with a myopic shift of 2.5 diopters (D) in the right eye and 2.0 D in the left eye. The intraocular pressure was only elevated in the left eye. Neodymium: yttrium-aluminum-garnet laser posterior capsulotomy resolved the block successfully in both eyes. A thick lens with a plate haptic design may have contributed to the early CBS.

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AIM: To analyze and identify the proteomic differences between liquefied after-cataracts and normal lenses by means of liquefied chromatography-tandem mass spectrometry (LC-MS/MS). METHODS: Three normal lenses and three liquefied after-cataracts were exposed to depolymerizing reagents to extract the total proteins. Protein concentrations were separated using two-dimensional gel electrophoresis (2-DE). The digitized images obtained with a GS-800 scanner were then analyzed with PDQuest7.0 software to detect the differentially-expressed protein spots. These protein spots were cut from the gel using a proteome work spot cutter and subjected to in-gel digestion with trypsin. The digested peptide separation was conducted by LC-MS/MS. RESULTS: The 2-DE maps showed that lens proteins were in a pH range of 3-10 with a relative molecular weight of 21-70 kD. The relative molecular weight of the more abundant proteins was localized at 25-50 kD, and the isoelectric points were found to lie between PI 4-9. The maps also showed that the protein level within the liquefied after-cataracts was at 29 points and significantly lower than in normal lenses. The 29 points were identified by LC-MS/MS, and ten of these proteins were identified by mass spectrometry and database queries: beta-crystallin B1, glyceraldehyde-3-phosphate dehydrogenase, carbonyl reductase (NADPH) 1, cDNA FLJ55253, gamma-crystallin D, GAS2-like protein 3, sorbitol dehydrogenase, DNA FLJ60282, phosphoglycerate kinase, and filensin. CONCLUSION: The level of the ten proteins may play an important role in the development of liquefied after-cataracts.