IMPORTANCE Ocular pseudoexfoliation (PEX) syndrome may be associated with systemic vascular diseases, which might suggest a broader health significance of PEX, although previous reports are conflicting.OBJECTIVE To determine whether prespecified vascular risk factors and cardiac abnormalities are more common among patients with PEX than among control individuals without PEX. DESIGN, SETTING, AND PARTICIPANTSThis cross-sectional analysis of patients recruited into the Aravind Pseudoexfoliation study included South Indian patients older than 40 years with or without PEX who required cataract surgery. Surgical procedures were performed at 4 tertiary Aravind eye hospitals in Tamil Nadu, India, from December 2, 2010, through March 26, 2012. Nine hundred thirty patients with PEX and 476 non-PEX controls underwent detailed ocular examinations, including specific ocular features reflecting PEX. Patients also underwent evaluation for multiple systemic potential cardiovascular diseases and their risk factors. The data collection for this analysis on systemic vascular diseases started on December 2, 2010, and ended on April 30, 2014. This study analysis was specified in the study protocol. MAIN OUTCOMES AND MEASURESFive cardiovascular outcomes compared between patients with and without PEX included blood glucose, cholesterol, and homocysteine levels; blood pressure; and cardiac morbidity (defined by electrocardiographic [ECG] abnormalities). RESULTSThe study analysis included 930 patients in the PEX group and 476 in the non-PEX group. The mean (SD) ages of patients in the PEX and non-PEX groups were 64.8 (6.8) and 59.9 (7.3) years (P < .001), respectively. More patients in the PEX group were men (470 [50.5%] vs 460 women [49.5%]) than in the non-PEX group (201 [42.2%] vs 275 women [57.8%]; P < .001). In multivariable analyses adjusting for age and sex, higher systolic blood pressure values were noted for the PEX group (difference [Δ], 4.0 mm Hg; 95% CI, 1.7-6.2 mm Hg; P = .001). Also, patients in the PEX group were more likely to demonstrate an ECG abnormality than in the non-PEX group (odds ratio, 1.64; 95% CI, 1.04-2.60; P = .03). Pseudoexfoliation was not observed to be associated with a higher level of blood glucose (Δ, 6.2 mg/dL; 95% CI, −2.0 to 14.3 mg/dL; P = .14), serum cholesterol (Δ, −0.6 mg/dL; 95% CI, −5.1 to 4.0 mg/dL; P = .81), or serum homocysteine level (Δ, 0.004 mg/L; 95% CI, −0.12 to 0.14; P = .96).CONCLUSIONS AND RELEVANCE Of the 5 cardiovascular outcomes examined in South Indian patients requiring cataract surgery, PEX was associated with higher systolic blood pressure and more frequent ECG abnormalities but not with higher blood glucose, serum cholesterol, or serum homocysteine levels. Patients with PEX are more likely to require attention to blood pressure and cardiac morbidity.
Both phacoemulsification and MSICS led to significant and similar IOP reductions 6 months after surgery, and both surgeries produced similar changes in anterior chamber and angle parameters. Higher baseline IOP was associated with greater IOP reduction; IOP reduction also can be attributed partly to changes in angle and anterior chamber configuration, although these parameters were unable to predict significantly predict IOP drop at 6 months.
A relatively simple and inexpensive technique to train surgeons in phacoemulsification using a goat's eye integrated with a human cataractous nucleus is described. The goat's eye is placed on a bed of cotton within the lumen of a cylindrical container. This is then mounted on a rectangular thermocol so that the limbus is presented at the surgical field. After making a clear corneal entry with a keratome, the trainer makes a 5–5.5 mm continuous curvilinear capsulorhexis in the anterior lens capsule, creates a crater of adequate depth in the cortex and inserts the human nucleus within this crater in the goat's capsular bag. The surgical wound is sutured, and the goat's eye is ready for training. Creating the capsulorhexis with precision and making the crater of adequate depth to snugly accommodate the human nucleus are the most important steps to prevent excessive wobbling of the nucleus while training.
Anterior segment OCT with its high negative predictive value can be used successfully to predict the risk for posterior capsule rupture during phacoemulsification in eyes with posterior polar cataract.
Introduction:Toric intraocular lenses (IOLs) are an effective way of compensating preexisting corneal astigmatism during cataract surgery. To achieve success, it is imperative to align the toric IOLs in desired position and preoperative reference marking is one among the three important steps for accurate alignment. To make the marking procedure simpler and effective, we have modified the conventional three-step slit lamp-based technique.Materials and Methods:Patient is seated in front of the slit lamp and asked to keep the chin over chin rest. A 26-gauge bent needle with tip stained by sterile blue ink marker is used to make anterior stromal puncture (ASP) at the edges of horizontal 180° axis near the limbus.Results:A total of 58 eyes were retrospectively evaluated. Mean (+/-SD) IOL deviation on day 1 and day 30 was 5.7 ± 6.5° and 4.7 ± 5.6°, respectively. Median IOL misalignment on day 1 and day 30 was 3°. Redialing of IOL was required in 2 (3.4%) eyes only, all of which were performed within 1 week of surgery. In total, 2 (3.7%) eyes had a residual astigmatism of − 0.5 Dcyl and − 1.0 Dcyl, respectively.Conclusion:ASP is an effective technique for reference marking, technically simpler and can be practiced by most of the surgeons. It avoids the necessity of high-end sophisticated machinery and gives a better platform for the reference corneal marking along with the benefit of reproducibility and simplicity.
Femtosecond laser-assisted cataract surgery was performed in a patient with high myopia, who had undergone posterior chamber phakic intraocular lens surgery (Implantable Collamer Lens, ICL). During docking the machine erroneously focused the laser on the anterior surface of ICL and laser for lens fragmentation was also defocused, which were correctly positioned before laser delivery. During laser application for capsulotomy, air bubbles were entrapped under the ICL prohibiting lens fragmentation. One must be careful during focusing the laser in eyes with ICL. Additionally, gas bubbles under the ICL may lead to difficulties in completion of nuclear disassembly.
Purpose:The purpose of this study is to assess the learning curve in the initial 100 cases of cataract surgery performed using femtosecond laser-assisted cataract surgery (FLACS) by experienced cataract surgeons without prior experience in femtosecond laser platform.Methods:This study was conducted at tertiary care eye hospital, South India. This was a prospective interventional study. The first 100 consecutive eyes undergoing FLACS were studied to understand docking time, number of docking attempts, problems encountered during docking, and complications attributable to docking. Phacoemulsification performed after femtosecond laser was also studied for complications, need for additional instrumentation, and total time required for surgery. Comparison was also made between two operating surgeons.Results:Successful docking was recorded in 70% eyes at the first attempt. Mean time taken for successful docking was 9.3 ± 6.4 min (median = 6 min, interquartile range (IQR) = 5–10 min, range = 4–35 min). When surgeries were divided into quartiles, docking time reduced significantly from 16.2 ± 7.9 min in the first quartile to 6.2 ± 2.7 min in the fourth quartile (P < 0.001). Phacoemulsification postdocking required 12.9 ± 6.2 min (median = 10 min, IQR = 9–17.5 min). Six eyes showed anterior capsular tags, one had radial extension of capsulorhexis, and two eyes showed pupillary miosis after femtosecond laser application. At 6 weeks, 79% eyes attained uncorrected vision of 20/20, and all eyes had best-corrected vision of 20/20.Conclusion:Approximately 25–30 cases were required before obtaining reproducible results with FLACS, irrespective of cataract surgical experience, suggesting that training programs must offer a minimum 25 surgeries. Very few complications occurred during the learning curve, making it patient friendly.
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