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Article ; Online: Novel custom designed toric piggyback intraocular lens for the correction of residual postoperative astigmatism.

Chatterjee, Debapriya / Mittal, Vikas

2023 Volume 71, Issue 5, Page(s) 2247–2250

Abstract: We report the outcomes of a custom-designed toric piggyback intraocular lens in a patient with high postoperative residual astigmatism. A 60-year-old male patient underwent customized toric piggyback IOL for postoperative residual astigmatism of 13 D, ... ...

Abstract	We report the outcomes of a custom-designed toric piggyback intraocular lens in a patient with high postoperative residual astigmatism. A 60-year-old male patient underwent customized toric piggyback IOL for postoperative residual astigmatism of 13 D, with follow-up examinations for IOL stability and refractive outcomes. The refractive error stabilized at two months and remained stable at one year, with a correction of nearly 9 D of astigmatism. The IOP remained within normal limits, and there were no postoperative complications. The IOL remained stable in the horizontal position. To our knowledge, this is the first case report of correction of unusually high astigmatism by a novel smart toric design of piggyback IOL.
MeSH term(s)	Humans ; Male ; Middle Aged ; Postoperative Complications ; Astigmatism/etiology ; Astigmatism/surgery ; Refractive Errors ; Lens Implantation, Intraocular/adverse effects ; Lenses, Intraocular/adverse effects ; Phacoemulsification/methods ; Visual Acuity ; Refraction, Ocular
Language	English
Publishing date	2023-05-18
Publishing country	India
Document type	Case Reports ; Journal Article
ZDB-ID	187392-1
ISSN	1998-3689 ; 0301-4738
ISSN (online)	1998-3689
ISSN	0301-4738
DOI	10.4103/ijo.IJO_2198_22
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Article ; Online: Outcomes of Simple Limbal Epithelial Transplantation Without Amniotic Membrane Grafting in Unilateral Limbal Stem Cell Deficiency: A Case Series of 6 Patients.

Jain, Neha / Mittal, Vikas / Sanandiya, Dharma

Cornea

2024

Abstract: Purpose: This study describes the technique of simple limbal epithelial transplantation (SLET) without amniotic membrane grafting (AMG) in limbal stem cell deficiency (LSCD).: Methods: Retrospective, interventional case series of 6 patients who ... ...

Abstract	Purpose: This study describes the technique of simple limbal epithelial transplantation (SLET) without amniotic membrane grafting (AMG) in limbal stem cell deficiency (LSCD). Methods: Retrospective, interventional case series of 6 patients who underwent SLET without AMG were included. The procedure followed the standard technique, involving limbal biopsy from the healthy eye, resection of symblephera, and pannus dissection in the affected eye. Following host bed preparation, limbal explants were placed on the bare cornea and secured with fibrin glue. A large-diameter bandage contact lens was applied post surgery. No amniotic membrane was used. Preoperative data, including age, gender, cause of LSCD, best-corrected visual acuity, and previous ocular surgeries, were recorded. Postoperative clinical information, such as the duration of follow-up and recurrence of LSCD, best-corrected visual acuity, and other ocular examination findings, was recorded in an excel sheet. Results: Preoperatively, 2 patients had total LSCD (secondary to a firecracker injury and excision biopsy for ocular surface squamous neoplasia). 4 patients had partial LSCD (3 chemical injuries, 1 firecracker injury). The mean age of participants was 30.67 ± 15.91 years, with a mean follow-up duration of 9.33 ± 8.04 months. Intraoperatively, all patients exhibited a smooth corneal surface after pannus removal. Postoperatively, all limbal explants remained securely attached, with complete corneal epithelialization achieved within 2 to 3 weeks. The ocular surface remained stable throughout, and no recurrence of LSCD was observed in any patient. No loss of explants was seen. Conclusions: The present series suggests that AMG may not be a necessary step for performing SLET.
Language	English
Publishing date	2024-03-13
Publishing country	United States
Document type	Journal Article
ZDB-ID	604826-2
ISSN	1536-4798 ; 0277-3740
ISSN (online)	1536-4798
ISSN	0277-3740
DOI	10.1097/ICO.0000000000003526
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Article ; Online: Customized Bowman-Stromal Inlay: An Attempt to Change the Topography of the Keratoconus Cornea.

Mittal, Vikas / Jain, Neha / Pandya, Yatri / Chatterjee, Debapriya

Cornea

2023 Volume 42, Issue 6, Page(s) 739–743

Abstract: Purpose: The objective of this report is to describe a modification of a previously reported technique with an aim of improving the corneal topography and visual outcomes in progressive keratoconus along with stabilization of ectasia.: Method: In a ... ...

Abstract	Purpose: The objective of this report is to describe a modification of a previously reported technique with an aim of improving the corneal topography and visual outcomes in progressive keratoconus along with stabilization of ectasia. Method: In a 26-year-old man with progressive keratoconus, corneal collagen cross-linking was performed in one eye. The other eye had a keratometry of 69.6 D and thinnest pachymetry of 397 µm for which a customized Bowman-stromal inlay surgery was performed. The technique involved the harvesting of Bowman-stromal inlay (anterior 180-μm human donor cornea having the Bowman's layer and anterior stroma) using the femtosecond laser and central ablation of this inlay was done on the stromal side using an excimer laser. This customized inlay was placed in the anterior stromal pocket of the patient's cornea using a regular intraocular lens injector. Results: Stabilization of keratoconus could be achieved in the present case along with improvement in the corrected distance visual acuity and pachymetry. Maximum keratometry decreased from 69.6 D to 57.3 D. Conclusions: Customized Bowman-stromal inlay technique appears to be a step towards creating an ideal inlay for the keratoconus cornea.
MeSH term(s)	Male ; Humans ; Adult ; Keratoconus/surgery ; Corneal Stroma/surgery ; Cornea/surgery ; Visual Acuity ; Corneal Topography ; Cross-Linking Reagents ; Photosensitizing Agents ; Riboflavin
Chemical Substances	Cross-Linking Reagents ; Photosensitizing Agents ; Riboflavin (TLM2976OFR)
Language	English
Publishing date	2023-03-28
Publishing country	United States
Document type	Case Reports ; Journal Article
ZDB-ID	604826-2
ISSN	1536-4798 ; 0277-3740
ISSN (online)	1536-4798
ISSN	0277-3740
DOI	10.1097/ICO.0000000000003257
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Article ; Online: Partial-thickness compression sutures without descemetopexy for management of acute hydrops in keratoconus: A novel surgical technique.

Jain, Neha / Shah, Vishwa / Mittal, Vikas / Yadav, Vibha

Indian journal of ophthalmology

2023 Volume 71, Issue 1, Page(s) 281–286

Abstract: This article reports a novel surgical technique of partial-thickness compression sutures without descemetopexy with air or gas for the management of acute hydrops in keratoconus. Two patients presented with localized corneal edema with a Descemet ... ...

Abstract	This article reports a novel surgical technique of partial-thickness compression sutures without descemetopexy with air or gas for the management of acute hydrops in keratoconus. Two patients presented with localized corneal edema with a Descemet membrane (DM) tear in the left eye. Tomography of the right eye revealed localized steepening with increased maximum keratometry and decreased central pachymetry. They were diagnosed with keratoconus in the right eye and acute corneal hydrops (ACH) in the left eye. Compression sutures were passed through the stroma without touching the DM. The anterior chamber was not entered at all at any point during the surgery. Resolution of edema was noted intraoperatively itself. Further resolution of edema was noted from the first postoperative day which markedly reduced within the first week. A corneal scar with no edema was seen at six weeks. In both the patients, vision at presentation was counting fingers close to face which improved to 20/60 and 20/50, respectively, at the last visit.
MeSH term(s)	Humans ; Keratoconus/complications ; Keratoconus/diagnosis ; Keratoconus/surgery ; Descemet Membrane/surgery ; Acute Disease ; Edema ; Corneal Edema/diagnosis ; Corneal Edema/etiology ; Corneal Edema/surgery ; Sutures
Language	English
Publishing date	2023-01-06
Publishing country	India
Document type	Journal Article
ZDB-ID	187392-1
ISSN	1998-3689 ; 0301-4738
ISSN (online)	1998-3689
ISSN	0301-4738
DOI	10.4103/ijo.IJO_2085_22
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Article ; Online: Surgical application of Ong speculum in simple limbal epithelial transplantation and pterygium surgery.

Mittal, Vikas / Jain, Neha / Vashist, Urvish / Shah, Vishwa

Indian journal of ophthalmology

2023 Volume 71, Issue 3, Page(s) 994–995

Abstract: Ong speculum is used in glaucoma surgeries such as trabeculectomy to expose the superior part of the globe. The large inferior blade pushes the inferior conjunctival fornix, due to which the eyeball rotates downwards. It has not been used in other ... ...

Abstract	Ong speculum is used in glaucoma surgeries such as trabeculectomy to expose the superior part of the globe. The large inferior blade pushes the inferior conjunctival fornix, due to which the eyeball rotates downwards. It has not been used in other anterior segment surgeries before. We used this speculum in simple limbal epithelial transplantation (SLET) and pterygium surgery to expose superior bulbar conjunctiva for harvesting limbal and conjunctival grafts, respectively. As the superior conjunctiva and sclera become exposed, it facilitates the steps of harvesting limbal biopsy and conjunctival graft in SLET and pterygium surgery. This eliminated the need for a superior rectus suture or an assistant who would keep the globe rotated downwards. Its position could also be maneuvered to adjust the site of exposure when dissecting the area of pannus in SLET. Thus, it makes the superior conjunctiva more accessible.
MeSH term(s)	Humans ; Pterygium ; Conjunctiva ; Biopsy ; Neurosurgical Procedures ; Surgical Instruments
Language	English
Publishing date	2023-03-21
Publishing country	India
Document type	Journal Article
ZDB-ID	187392-1
ISSN	1998-3689 ; 0301-4738
ISSN (online)	1998-3689
ISSN	0301-4738
DOI	10.4103/IJO.IJO_2528_22
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Article ; Online: Outcomes of topography-guided PRK/CXL in keratoconus using the NIDEK CXIII system-"Bharat Protocol" (Pilot study).

Jain, Rajat / Shuaib, Yusra / Mohan, Neha / Mittal, Vikas

Indian journal of ophthalmology

2023 Volume 71, Issue 9, Page(s) 3203–3209

Abstract: Purpose: Outcome of topography-guided excimer laser ablation in conjunction with accelerated, high-fluence cross-linking in corneal ecstatic disease using the NIDEK CXIII equipped with CATz algorithm from the FinalFit software-"Bharat Protocol.": ... ...

Abstract	Purpose: Outcome of topography-guided excimer laser ablation in conjunction with accelerated, high-fluence cross-linking in corneal ecstatic disease using the NIDEK CXIII equipped with CATz algorithm from the FinalFit software-"Bharat Protocol." Methods: Retrospective case record review of 30 eyes of 17 patients of stage 1-3 keratoconus who underwent the procedure was performed. Data collected were for visual acuity, distortion-induced eye pain, and keratometry. Pachymetry, lower order and higher order aberrations, spherical aberrations, and topographic cylinder were documented from by Scheimpflug imaging (Pentacam 70700: Oculus, Wetzlar, Germany). Results: At a minimum follow-up of 6 months (range 6.2-13 months), there was significant improvement in UCVA (P < 0.00001), BCVA (P = 0.0061), decrease in Kmax (P = 0.0349), Ksteep (P < 0.0411), Kflat (P = 0.0099), and pachymetry (P = 0.0001). Significant improvement was also seen in distortion-induced eye pain (27/30 to 2/30; P < 0.00001). A more than two-line improvement in UCVA and BCVA was seen in 23/30 and 17/30 cases, respectively. Ectasia was stabilized in all cases at the last follow-up, and no complications were seen. Conclusions: The "Bharat" Protocol to arrest keratectasia progression and improve corneal regularity is a safe and efficacious alternative as a keratoconus management option. This is the first such study on Nidek Platform for the same.
MeSH term(s)	Humans ; Keratoconus/diagnosis ; Keratoconus/drug therapy ; Keratoconus/surgery ; Pilot Projects ; Eye Pain ; Retrospective Studies ; Cornea/surgery
Language	English
Publishing date	2023-08-01
Publishing country	India
Document type	Journal Article
ZDB-ID	187392-1
ISSN	1998-3689 ; 0301-4738
ISSN (online)	1998-3689
ISSN	0301-4738
DOI	10.4103/IJO.IJO_295_23
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Article: COVID-19 detection in lung CT slices using Brownian-butterfly-algorithm optimized lightweight deep features.

Rajinikanth, Venkatesan / Biju, Roshima / Mittal, Nitin / Mittal, Vikas / Askar, S S / Abouhawwash, Mohamed

Heliyon

2024 Volume 10, Issue 5, Page(s) e27509

Abstract: Several deep-learning assisted disease assessment schemes (DAS) have been proposed to enhance accurate detection of COVID-19, a critical medical emergency, through the analysis of clinical data. Lung imaging, particularly from CT scans, plays a pivotal ... ...

Abstract	Several deep-learning assisted disease assessment schemes (DAS) have been proposed to enhance accurate detection of COVID-19, a critical medical emergency, through the analysis of clinical data. Lung imaging, particularly from CT scans, plays a pivotal role in identifying and assessing the severity of COVID-19 infections. Existing automated methods leveraging deep learning contribute significantly to reducing the diagnostic burden associated with this process. This research aims in developing a simple DAS for COVID-19 detection using the pre-trained lightweight deep learning methods (LDMs) applied to lung CT slices. The use of LDMs contributes to a less complex yet highly accurate detection system. The key stages of the developed DAS include image collection and initial processing using Shannon's thresholding, deep-feature mining supported by LDMs, feature optimization utilizing the Brownian Butterfly Algorithm (BBA), and binary classification through three-fold cross-validation. The performance evaluation of the proposed scheme involves assessing individual, fused, and ensemble features. The investigation reveals that the developed DAS achieves a detection accuracy of 93.80% with individual features, 96% accuracy with fused features, and an impressive 99.10% accuracy with ensemble features. These outcomes affirm the effectiveness of the proposed scheme in significantly enhancing COVID-19 detection accuracy in the chosen lung CT database.
Language	English
Publishing date	2024-03-02
Publishing country	England
Document type	Journal Article
ZDB-ID	2835763-2
ISSN	2405-8440
ISSN	2405-8440
DOI	10.1016/j.heliyon.2024.e27509
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Article ; Online: Design and simulation of 4 kW solar power-based hybrid EV charging station.

Singla, Priyanshu / Boora, Shakuntla / Singhal, Poonam / Mittal, Nitin / Mittal, Vikas / Gared, Fikreselam

Scientific reports

2024 Volume 14, Issue 1, Page(s) 7336

Abstract: Electric vehicles (EVs) have become an attractive alternative to IC engine cars due to the increased interest in lowering the consumption of fossil fuels and pollution. This paper presents the design and simulation of a 4 kW solar power-based hybrid EV ... ...

Abstract	Electric vehicles (EVs) have become an attractive alternative to IC engine cars due to the increased interest in lowering the consumption of fossil fuels and pollution. This paper presents the design and simulation of a 4 kW solar power-based hybrid EV charging station. With the increasing demand for electric vehicles and the strain they pose on the electrical grid, particularly at fast and superfast charging stations, the development of sustainable and efficient charging infrastructure is crucial. The proposed hybrid charging station integrates solar power and battery energy storage to provide uninterrupted power for EVs, reducing reliance on fossil fuels and minimizing grid overload. The system operates using a three-stage charging strategy, with the PV array, battery bank, and grid electricity ensuring continuous power supply for EVs. Additionally, the system can export surplus solar energy to the grid, reducing the load demand. The paper also discusses the use of MPPT techniques, PV cell modeling, and charge controller algorithms to optimize the performance of the hybrid charging station.
Language	English
Publishing date	2024-03-27
Publishing country	England
Document type	Journal Article
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-024-56833-5
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Book: Synthesis techniques for polymer nanocomposites

Mittal, Vikas

(Polymer nano-, micro- & macrocomposites ; Vol. 6)

2015

Author's details	ed. by Vikas Mittal
Series title	Polymer nano-, micro- & macrocomposites ; Vol. 6
Keywords	Polymere ; Herstellung ; Nanokomposit
Language	English
Size	XVI, 297 S, Ill., graph. Darst, 25 cm
Publisher	Wiley-VCH-Verl
Publishing place	Weinheim
Document type	Book
Note	Literaturangaben
ISBN	3527334556 ; 9783527334551
Database	Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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Book: Surface modification of nanoparticle and natural fiber fillers

Mittal, Vikas

(Polymer nano-, micro- & macrocomposites ; Vol. 7)

2015

Author's details	ed. by Vikas Mittal
Series title	Polymer nano-, micro- & macrocomposites ; Vol. 7
Keywords	Funktionalisierung ; Füllstoff ; Naturfaser ; Nanopartikel ; Nanokomposit
Language	English
Size	XIII, 225 S, Ill., graph. Darst, 25 cm
Publisher	Wiley-VCH-Verl
Publishing place	Weinheim
Document type	Book
Note	Literaturangaben
ISBN	3527334564 ; 9783527334568
Database	Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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