Search results for: Amar Agarwal

Items from 1 to 20 out of 117 results

article

Evidence for shock provides insight into the formation of the central elevated area in the Dhala impact structure, India

Amar Agarwal, Satyendra Kumar, Gaurav Joshi, K. K. Agarwal

Meteoritics & Planetary Science > 55 > 12 > 2772 - 2779

The central elevated area is a postimpact morphological landmark in the otherwise flat eroded remnant of the Dhala impact structure, India. Its base is the Bundelkhand granitic complex followed by beds of Dhala and Kaimur Formations. The beds of the Dhala and Kaimur Formation present typical sedimentary textures and structures such as cross‐bedding. The grains are angular, sorting is moderate to poor,...

article

Ramgarh, Rajasthan, India: A 10 km diameter complex impact structure

Thomas Kenkmann, Gerwin Wulf, Amar Agarwal

Meteoritics & Planetary Science > 55 > 4 > 936 - 961

The Ramgarh structure is a morphological landmark in southeastern Rajasthan, India. Its 200 m high and 3.5–4 km wide annular collar has provoked many hypotheses regarding its origin, including impact. Here, we document planar deformation features, planar fractures, and feather features in quartz grains of the central part of the Ramgarh structure, which confirm its impact origin. The annular collar...

article

Uranium enrichment at North Almora Thrust Zone, Kumaun Lesser Himalaya, Uttarakhand, India

Gaurav Joshi, K K Agarwal, Amar Agarwal, J R Vidal-Solano

Journal of Earth System Science > 2019 > 128 > 8 > 1-7

Intensely deformed and mylonitised rocks of the Almora Crystalline Zone (ACZ) have shown the potential of ²³⁸U and ²³²Th enrichment. ²³²Th, ²³⁸U and ⁴⁰K are investigated by gamma-ray spectrometry in the rock samples collected along the three selected traverses across the North Almora Thrust Zone (NATZ). Obtained average values of U and Th are much higher, 7.3 and 23.9 ppm, respectively, than the average...

article

Overturned jointed non-sheared granite block emplaced on sheared non-jointed Alum shale

Amar Agarwal, Philipp Lied

International Journal of Earth Sciences > 2018 > 107 > 7 > 2463-2464

article

Combined lateral rectus augmented transposition and inferior rectus recession for monocular elevation deficiency

Manjula Jayakumar, Dhivya Ashok Kumar, Amar Agarwal

Journal of American Association for Pediatric Ophthalmology and Strabismus > 2018 > 22 > 2 > 161-163

We report the case of a 21-year-old woman who presented with a drooping right upper eyelid and smaller-appearing right eye, evident since birth. Her visual acuity was 20/30 in the right eye and 20/20 in the left eye. In primary gaze she had a hypotropia of 25^Δ, with a marked elevation limitation and associated true upper lid ptosis of 3 mm. Under local anesthesia, the lateral rectus muscle was transposed...

article

Intravitreal dexamethasone implant with retinal photocoagulation for adult-onset Coats’ disease

Kshitiz Kumar, Pallavi Raj, Nisha Chandnani, Amar Agarwal

International Ophthalmology > 2019 > 39 > 2 > 465-470

Purpose To report a case of adult-onset Coats’ disease with secondary retinal vasoproliferative tumor managed with dexamethasone intravitreal implant and retinal photocoagulation. Methods Case study. Results A 41-year-old female with counting finger vision was diagnosed with Coats’ disease with secondary retinal vasoproliferative tumor in right eye. Fundus examination revealed exudative retinopathy...

article

Short-term fluctuation of lens corneal distance and clinical correlation with phacodonesis

Dhivya Ashok Kumar, Soundari Sivangnanam, Amar Agarwal, Sumaiya Banu Samiullah, more

Graefe's Archive for Clinical and Experimental Ophthalmology > 2018 > 256 > 3 > 567-573

Background To analyze the role of short-term lens–corneal distance (LCD) fluctuation in quantifying preoperative phacodonesis and predicting intraoperative zonular weakness. Methods Patients were divided into control (lens without clinical phacodonesis) and study (lens with suspicious and clinical phacodonesis) groups for evaluation. Slit-lamp examination followed by IOLMaster (Carl Zeiss) for LCD...

article

Emplacement dynamics and hydrothermal alteration of the Atengo ignimbrite, southern Sierra Madre Occidental, northwestern Mexico

Amar Agarwal, L.M. Alva-Valdivia, M.L. Rivas-Sánchez, E. Herrero-Bervera, more

Journal of South American Earth Sciences > 2017 > 80 > C > 559-568

The Sierra Madre Occidental is a thick continental arc related to the subduction of the Farallon plate beneath North America resulting in a very intense and widespread Cretaceous to Cenozoic magmatic and tectonic activity. The 28 My old Atengo ignimbrite outcrops in the southern Sierra Madre Occidental, northwestern Mexico. From 12 sites that belong to various pyroclastic and lava flows emplaced during...

article

Combined interface tattooing and fibrin glue–assisted sutureless corneal resurfacing with donor lenticule obtained from small-incision lenticule extraction for limbal dermoid

Soosan Jacob, Smita Narasimhan, Amar Agarwal, Athiya Agarwal, more

Journal of Cataract & Refractive Surgery > 2017 > 43 > 11 > 1371-1375

We describe a technique of small-incision lenticule extraction (SMILE)–assisted sutureless corneal resurfacing with interface tattooing for superficial limbal dermoids. After excision at a plane minimally below surrounding normal cornea and sclera, a corneal tattoo powder is carefully applied within an inked circular outline of the intended corneal margin. Circularity and cosmesis are assessed in...

article

A novel Seahorse-shaped, small-scale structure from Almora Crystalline Zone, Uttarakhand, India

K. K. Agarwal, R. Bali, Gaurav Joshi, Amar Agarwal

International Journal of Earth Sciences > 2018 > 107 > 6 > 2063-2064

article

Single-pass four-throw pupilloplasty: Postoperative mydriasis and fundus visibility in pseudophakic eyes

Dhivya Ashok Kumar, Amar Agarwal, Maheswari Srinivasan, Jyothi Narendrakumar, more

Journal of Cataract & Refractive Surgery > 2017 > 43 > 10 > 1307-1312

To analyze the pharmacological mydriasis and the consequent fundus visibility after single-pass 4-throw pupilloplasty in pseudophakic eyes.Dr. Agarwal's Eye Hospital, Chennai, India.Comparative case series.Patients with bilateral pseudophakia with single-pass 4-throw pupilloplasty in 1 eye (study) and no single-pass 4-throw in the fellow eye (control) were included. The pupil measurements were analyzed...

article

Young donor–graft assisted endothelial keratoplasty (PDEK/DMEK) with epithelial debridement for chronic pseudophakic bullous keratopathy

Amar Agarwal, Priya Narang, Dhivya A. Kumar, Ashvin Agarwal

Canadian Journal of Ophthalmology / Journal Canadien d'Ophtalmologie > 2017 > 52 > 5 > 519-526

The aim of this study was to describe the applicability and report visual outcomes for the treatment of subepithelial fibrosis and anterior stromal scarring in cases of chronic pseudophakic bullous keratopathy (PBK) with epithelial debridement and endothelial keratoplasty (EK) (pre-Descemet endothelial keratoplasty [PDEK]; Descemet membrane endothelial keratoplasty [(DMEK]) using young donor tissue...

article

Corneal topography and keratometry changes after glued intraocular lens implantation

Dhivya Ashok Kumar, Harspreet Kaur, Amar Agarwal, Sajitha Selvaraj, more

Journal of Cataract & Refractive Surgery > 2017 > 43 > 8 > 1062-1067

To analyze the alterations in corneal topography and keratometry (K) after glued transscleral-fixated intraocular lens (IOL) implantation.Dr. Agarwal's Eye Hospital, Chennai, India.Prospective case series.Eyes having glued IOL implantation for aphakia or subluxated lens (>180 degrees) were included. Preoperative autorefractometer and corneal topography was performed. Intraoperative parameters,...

article

Modified posterior-assisted levitation with intraocular lens scaffold and glued IOL for sinking nucleus in eyes with inadequate sulcus support

Priya Narang, Amar Agarwal

Journal of Cataract & Refractive Surgery > 2017 > 43 > 7 > 872-876

Posterior-assisted levitation is used to retrieve and levitate a sinking nucleus in cataract surgery associated with posterior capsule rupture. After the nucleus is levitated in the anterior chamber, the intraocular lens (IOL) scaffold procedure helps emulsify the nuclear remnants with the phacoemulsification probe and glue-assisted intrascleral haptic fixation (glued IOL) enables appropriate placement...

article

Sequential segmental terminal lenticular side-cut dissection for safe and effective small-incision lenticule extraction in thin lenticules

Soosan Jacob, Amar Agarwal, Cosimo Mazzotta, Athiya Agarwal, more

Journal of Cataract & Refractive Surgery > 2017 > 43 > 4 > 443-448

Small-incision lenticule extraction may be associated with complications such as partial lenticular dissection, torn lenticule, lenticular adherence to cap, torn cap, and sub-cap epithelial ingrowth, some of which are more likely to occur during low-myopia corrections. We describe sequential segmental terminal lenticular side-cut dissection to facilitate minimally traumatic and smooth lenticular extraction...

article

Supracapsular glued intraocular lens in progressive subluxated cataracts: Technique to retain an intact vitreous face

Soosan Jacob, Smita Narasimhan, Amar Agarwal, Cosimo Mazzotta, more

Journal of Cataract & Refractive Surgery > 2017 > 43 > 3 > 312-317

We describe a technique to prevent late intraocular lens (IOL) subluxation and dislocation that can be associated with progressive zonulopathy. Supracapsular glued IOL fixation is done to retain an intact anterior hyaloid face and avoid vitreous disturbance while providing stable long-term IOL fixation. Phacoemulsification is followed by glued IOL implantation above intact anterior and posterior capsules...

article

February consultation #7

Priya Narang, Amar Agarwal

Journal of Cataract & Refractive Surgery > 2017 > 43 > 2 > 296-297

article

Vitrectomy-assisted phacoemulsification for lenticular coloboma

Ashvin Agarwal, Priya Narang, Amar Agarwal

Journal of Cataract & Refractive Surgery > 2017 > 43 > 2 > 156-161

We describe a technique to prevent continuous vitreous hydration during phacoemulsification in eyes with lenticular coloboma. The hydration results from communication between the anterior and posterior chambers from the edges of the colobomatous defect. To avoid this, a valved trocar is placed at the pars plana site around the area of the lenticular defect, which allows a limited dry vitrectomy during...

article

Microstructures and strain variation: Evidence of multiple splays in the North Almora Thrust Zone, Kumaun Lesser Himalaya, Uttarakhand, India

Gaurav Joshi, Amar Agarwal, K.K. Agarwal, Samriddhi Srivastava, more

Tectonophysics > 2017 > 694 > C > 239-248

The North Almora Thrust zone (NATZ) marks the boundary of the Almora Crystalline Complex (ACC) against the Lesser Himalayan Sedimentary sequence (LHS) in the north. Its southern counterpart, the South Almora Thrust (SAT), is a sharply marked contact between the ACC and the LHS in the south. Published studies argue various contradictory emplacement modes of the North Almora Thrust. Recent studies have...

article

Pupilloplasty for pupil size attenuation to prevent pupillary capture: Theory of quintet in glued IOL

Priya Narang, Amar Agarwal

Journal of Cataract & Refractive Surgery > 2017 > 43 > 1 > 3-7

We describe a pupilloplasty procedure to prevent a captive iris and to narrow the pupillary aperture and its associated complications. We also describe 5 surgical techniques in combination—vertical glued IOL, peripheral iridectomy, anterior sclerotomy, pupilloplasty, and application of a trocar anterior chamber maintainer—performed in eyes with a large WTW diameter; that is, the quintet in glued IOL...

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article (116)
book (1)

Keywords

ALMORA CRYSTALLINE ZONE (3)
KUMAUN LESSER HIMALAYA (2)
NORTH ALMORA THRUST ZONE (2)
20G SUTURELESS VITRECTOMY WITH IOL REPOSITIONING (1)
ALMORA CRYSTALLINE COMPLEX (1)
AMS. (1)
ATENGO IGNIMBRITE (1)
BULLOUS DESCEMET'S DETACHMENT (1)
DESCEMET'S MEMBRANE DETACHMENT (1)
DOUBLE MEMBRANE PEELING (1)
EMPLACEMENT MECHANISM (1)
EPIRETINAL MEMBRANE (1)
EXUDATIVE VITREO-RETINOPATHY (1)
FOLD GEOMETRY (1)
FOLDABLE GLUED IOL (1)
FOURIER DOMAIN OCT (1)
FREQUENCY DOMAIN OCT (1)
GLUED IOL (1)
HANDSHAKE TECHNIQUE (1)
HYDROTHERMAL ALTERATION HISTORY (1)
IDIOPATHIC RETINAL TELANGIECTASIA (1)
INJECTABLE GLUED IOL (1)
INTERFACE INFLAMMATION (1)
INTRAOCULAR SCAFFOLD METHOD (1)
INTRAVITREAL STEROID IMPLANT (1)
IOL SCAFFOLD (1)
LAMELLAR MACULAR HOLE (1)
LENS MOVEMENT (1)
LENS STABILITY (1)
LENS–CORNEAL DISTANCE (LCD) (1)
LESSER HIMALAYA, BACK-THRUSTING (1)
LOCKNE CRATER (1)
MACULAR PSEUDOHOLE (1)
MAGNETIC FABRICS (1)
MARK DEFECTS (1)
MICROABRASIONS ON IOL (1)
MICROFRACTURES (1)
MICROSTRUCTURES (1)
OPTIC CHANGES IN IOL SCAFFOLD (1)
OPTIC INJURY (1)
OPTICAL COHERENCE TOMOGRAPHY (1)
PHACODONESIS (1)
POST-LASIK INFILTRATION (1)
RELAXING DESCEMETOTOMY (1)
RETINAL VASOPROLIFERATIVE TUMOR (1)
RHEGMATOGENOUS DESCEMET'S DETACHMENT (1)
SCRATCH MARKS ON OPTIC (1)
SHEAR ZONES (1)
SHOCK PRESSURES (1)
SHORT-TERM FLUCTUATION IN LCD (1)
SOUTHERN SIERRA MADRE OCCIDENTAL, MEXICO (1)
SPECTROMETRY (1)
SPLAY FAULTS (1)
STRAIN VARIATION (1)
SURFACE ABNORMALITIES (1)
SUTURELESS IOL IMPLANTATION (1)
TRACTIONAL DESCEMET'S DETACHMENT (1)
URANIUM ENRICHMENT (1)
VITREOMACULAR TRACTION SYNDROME (1)
VITREORETINAL INTERFACE (1)
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Elsevier (105)
Springer (10)
Wiley (2)

INFONA - science communication portal

Search results for: Amar Agarwal

Evidence for shock provides insight into the formation of the central elevated area in the Dhala impact structure, India

Ramgarh, Rajasthan, India: A 10 km diameter complex impact structure

Uranium enrichment at North Almora Thrust Zone, Kumaun Lesser Himalaya, Uttarakhand, India

Overturned jointed non-sheared granite block emplaced on sheared non-jointed Alum shale

Combined lateral rectus augmented transposition and inferior rectus recession for monocular elevation deficiency

Intravitreal dexamethasone implant with retinal photocoagulation for adult-onset Coats’ disease

Short-term fluctuation of lens corneal distance and clinical correlation with phacodonesis

Emplacement dynamics and hydrothermal alteration of the Atengo ignimbrite, southern Sierra Madre Occidental, northwestern Mexico

Combined interface tattooing and fibrin glue–assisted sutureless corneal resurfacing with donor lenticule obtained from small-incision lenticule extraction for limbal dermoid

A novel Seahorse-shaped, small-scale structure from Almora Crystalline Zone, Uttarakhand, India

Single-pass four-throw pupilloplasty: Postoperative mydriasis and fundus visibility in pseudophakic eyes

Young donor–graft assisted endothelial keratoplasty (PDEK/DMEK) with epithelial debridement for chronic pseudophakic bullous keratopathy

Corneal topography and keratometry changes after glued intraocular lens implantation

Modified posterior-assisted levitation with intraocular lens scaffold and glued IOL for sinking nucleus in eyes with inadequate sulcus support

Sequential segmental terminal lenticular side-cut dissection for safe and effective small-incision lenticule extraction in thin lenticules

Supracapsular glued intraocular lens in progressive subluxated cataracts: Technique to retain an intact vitreous face

February consultation #7

Vitrectomy-assisted phacoemulsification for lenticular coloboma

Microstructures and strain variation: Evidence of multiple splays in the North Almora Thrust Zone, Kumaun Lesser Himalaya, Uttarakhand, India

Pupilloplasty for pupil size attenuation to prevent pupillary capture: Theory of quintet in glued IOL

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