Visual Acuity, Retinal Sensitivity, and Macular Thickness Changes in Diabetic Patients without Diabetic Retinopathy after Cataract Surgery (original) (raw)
Related papers
2017
Aim. Functional and morphological macular study after cataract surgery in a group of diabetics without diabetic retinopathy compared to nondiabetics to evaluate the effect of surgical oxidative stress on diabetic retina. Methods. Prospective, comparative study. Preoperative eye exam, best corrected visual acuity (BCVA) measured by ETDRS letters, and optical coherence tomography (OCT) were followed by standard cataract surgery.The follow-up visits at 1, 3, and 6 months postoperatively included BCVA, OCT, andmicroperimetry, to analyze changes within and between the groups. Results. The BCVA improved significantly in diabetics and controls: 64.2 to 81.0 and 61.9 to 82.1 ETDRS at 6 months, respectively. The central macula at OCT significantly thickened in both groups, while the central 5 fields, corresponding to the microperimetry area, subclinically thickened from 284.20 to 291.18 μm at 6 months only in diabetics (p = 0.026). A matching slight decrease in the microperimetry sensitivity...
Structural and functional macular changes after cataract surgery in diabetic patients
Medical review, 2020
Introduction. In recent years, the number of diabetic patients requiring cataract surgery has been on the rise. The aim of this study was to examine the effects of cataract surgery on visual acuity and changes in the central retinal thickness in diabetic patients with and without retinopathy, in relation to the duration of the disease, type of therapy, and the level of glycated hemoglobin and serum lipids. Material and Methods. The prospective study included 51 eyes of 34 patients divided into three groups. Preoperatively, all patients underwent best-corrected visual acuity evaluation with Snellen chart, cataract grading using lens opacities classification system III, as well as fundus examination and optical coherence tomography. Postoperative follow-up visits were scheduled after the first, fourth, sixth, eighth, and twelfth weeks after which the patients underwent best-corrected visual acuity evaluation and optical coherence tomography. The obtained values were statistically proc...
Retina, 2015
Purpose: Progression of diabetic macular edema has been reported as a common cause of poor visual acuity recovery after cataract surgery in patients with diabetes. Despite being responsible for the blood supply to the outer retina, the role of the choroidal layer in the pathogenesis of diabetic retinopathy (DR) is not yet understood. Our objective is to characterize macular and subfoveal choroidal thickness changes after cataract surgery in eyes with DR. Methods: Thirty-five eyes with clinically significant cataract of patients with DR were divided into three groups based on clinical and optical coherence tomography findings: patients with DR without macular edema, patients with DR and macular thickening detected on optical coherence tomography, and finally patients with clinically significant macular edema. All cases were submitted to ophthalmologic examination and spectral domain optical coherence tomography 1 week before cataract surgery and repeated 1 month after surgery. Patients with preoperative clinically significant macular edema were treated with intravitreal bevacizumab at the time of surgery. Results: All groups showed a significant increase in visual acuity 1 month after surgery (P , 0.001). Mean foveal thickness increased significantly in all groups, including controls (P = 0.013), except in patients who were simultaneously treated with intravitreal bevacizumab (P = 0.933). An increase of maximum macular thickness of at least 11% was found in 25.7% of the DR eyes, but no such increase occurred in the control eyes. No significant change was verified for subfoveal choroidal thickness in any of the studied groups. Conclusion: Surgical inflammation associated with cataract surgery caused a significant increase of macular thickness in control and DR eyes that were not treated with intravitreous bevacizumab. Such macular changes were not accompanied by subfoveal choroidal thickness changes in any of the study groups, suggesting that the changes in macular thickness associated with the surgery are not related to changes in choroidal thickness and that there is no relation between inner blood-retinal barrier status and diabetic choroidal angiopathy.
Journal of Ophthalmic and Vision Research, 2019
Purpose: To assess the quantitative changes of macula in diabetic and non-diabetic eyes after uncomplicated cataract surgery. Methods: In this prospective interventional study being performed in a tertiary healthcare hospital, a total of 660 eyes were divided into two groups. Group 1 included 330 eyes from healthy subjects and group 2 included 330 eyes from well-controlled diabetic subjects with no diabetic retinopathy planned for phacoemulsification with foldable IOL implantation by the same surgeon under similar settings. Optical Coherence Tomography (Heidelberg Spectralis SD-OCT) was used to assess preoperative and postoperative central macular thickness (CMT) at weeks 1 and 6. Results: The mean CMT in group 1 preoperatively, at postoperative week 1, and at post-operative week 6 was 257.03 ± 20.904, 262.82 ± 17.010, and 265.15 ± 20.078 μm, respectively. The corresponding values in group 2 were 255.36 ± 17.852, 259.15 ± 16.644, and 266.09 ± 18.844 μm, respectively. There was no si...
Effect of cataract surgery on macular thickness in diabetic patients
2020
Purpose: To study the effect of cataract surgery on macular thickness in diabetic patients. Materials and Method: This prospective comparative study enrolled 100 diabetics and 100 non-diabetics undergoing cataract surgery fulfilling inclusion criteria. Complete ocular examination was done for both the groups preoperatively and postoperatively at 1 week, 1month and 3 months including central macular thickness evaluation using optical coherence tomography. Result: Significant increase in mean central foveal thickness in diabetics and in non-diabetics post 1 month (P
"To Study Visual Outcome after Cataract Surgery in Diabetics And Non-Diabetics"
IOSR Journals , 2019
Objectives: To compare visual outcome after cataract extraction in diabetics and non-diabetics Method: Prospective observational hospital based study. Minimum of 50 diabetic patients and age and sex matched non-diabetic patients admitted for cataract extraction were selected. Visual acuity and fundus examination was done pre-operatively and post-operatively on day 1, day 7 and after 1 month Result: Visual outcome in diabetic patients after cataract extraction is comparable to the results in non-diabetic patient if the diabetics have no retinopathy and have good glycemic control. Conclusion: This study was carried out to investigate outcome of cataract surgery in diabetic cases and with intention of making recommendations for improved care.
Review on the Influence of Diabetes Mellitus in the Visual Prognosis of Cataract Surgery
Ophthalmology Research: An International Journal
India is deliberated the diabetes hub of the world, and a substantial amount of patients undergoing cataract surgery are diabetic. Developments in surgical techniques and instrumentation of cataract have large enriched the outcomes; but, surgical procedure may not be benign and real in certain entities with pre-existing retinal pathology or inadequate visual potential.. Keeping this in mind, we surveyed the different layers of the eye in managing the cataract in patients with diabetes. The changes in the cornea, intra ocular lens, choroid, and retina are the factors which influenced the visual prognosis of diabetic cataract patients. Better comprehension of different elements in charge of good result of cataract surgery in diabetic patients may direct us in better options in the management of these patients and advancing the outcomes. This review article targets to address diverse features adjoining cataracts in diabetic patients. In anelectronic MEDLINE search, appropriate studies ...
OCT Angiographic changes in diabetic patients after cataract surgery
NILES journal for Geriatric and Gerontology, 2021
The goal of this prospective non-interventional clinical study was to evaluate the role of OCT-A parameters in determining early changes that occur in DM patients following cataract surgery to be aware about early microvascular changes occurring & when to interfere to prevent complications of DR. The study was carried out on 30 eyes of cataractous diabetic patients without DR & 30 eyes of cataractous non diabetic patients, both underwent phaco. Patients were selected according to inclusion & exclusion criteria then complete ophthalmologic evaluation was done (history, examination and investigations). OCT-A was carried out for study groups before &during follow up after one week, one month &three months after surgery. The study showed that there was a significant increase in foveal & parafoveal thickness after three months in comparison with preoperative values & control group by 12±8.97foveal/ 11.40±3.99 parafoveal(p-value <0.001), also showed that there was a significant reduction in blood vessel density in SCP in 2 areas by 3.96±2.48 foveal /6.46±2.04 parafoveal (p-value <0.001)after three months postoperative. It can be concluded that using OCT-A to evaluate VD in DM patients is efficient to detect early changes that occur before clinical manifestation.
Diagnostics
Background. Ophthalmologists treat diabetic macular edema before cataract surgery to reduce possible complications. Despite improvements in diagnostic techniques, whether cataract surgery per se causes the progression of diabetic retinopathy with macular edema remains unclear. This study aimed to evaluate the impact of phacoemulsification on the central retina and its correlation with diabetes compensation as well as changes in the retina before surgery. Methods. Thirty-four type 2 diabetes mellitus patients who underwent phacoemulsification cataract surgery were included in this prospective longitudinal study. Of them, 29.4% had macular edema before surgery, and 70.6% had a normal macular structure. All patients underwent ophthalmic examinations, including optical coherence tomography angiography, at baseline and at one and three months after surgery. The Mann-Whitney test was performed to compare the area of the foveal avascular zone, perimeter of the foveal avascular zone, and me...
Arquivos Brasileiros de Oftalmologia, 2014
Purpose: This study was designed to evaluate the visual and anatomical out co mes after cataract surgery in diabetic patients with different intraoperative therapeutic strategies. Methods: The research design comprised of a multicentric, retrospective, interventional study conducted at 6 centers in Argentina, Brazil, Costa Rica, Puerto Rico, Spain, and Venezuela. We included 138 diabetic patients with at least 6-month follow-up following phacoemulsification and intraocular lens implantation. Best-corrected visual acuity (BCVA) and central subfield thickness were collected at baseline and at 1-, 2-, 3-, and 6-month follow-up. Of these, 42 cases were not treated with any intraoperative coadjuvant medication (Group 1), 59 patients received intraoperative bevacizumab (Group 2) and 37 patients received intraoperative triamcinolone (4 mg/0.1 ml) (Group 3). Results: The mean logMAR [± standard deviation (SD)] BCVA improved from 0.82 (± 0.43) at baseline, to 0.14 (± 0.23) at 6-month follow-up (p<0.001) in Group 1; from 0.80 (± 0.48) to 0.54 (± 0.45) (p<0.001) in Group 2; and from 1.0 (± 0.40) to 0.46 (± 0.34) (p<0.001) in Group 3. The mean central subfield thickness increased from 263.57 µm (± 35.7) at baseline to 274.57 µm (± 48.7) at 6-month follow-up (p=0.088) in Group 1; from 316.02 µm (± 100.4) to 339.56 µm (± 145.3) (p=0.184) in Group 2; and from 259.18 µm (± 97.9) to 282.21 µm (± 87.24) (p=0.044) in Group 3. Conclusions: Diabetic patients may significantly benefit from cataract surgery. This study provides evidence to support the use of intravitreal triamcinolone or bevacizumab at the time of cataract surgery in cases with pre-existent diabetic macular edema or moderate-severe non-proliferative diabetic retinopathy.