Publications by authors named "Narasimhan R"

An induced cylinder and spherical power after implantation with an extended depth of focus (EDOF) and enhanced monofocal intraocular lens (IOL) could improve distance, intermediate (60 cm) and near (40 cm) visual acuity (VA). In this prospective study, forty eyes with Eyhance EDOF IOL (Johnson and Johnson, USA) and 40 eyes with Vivity EDOF IOL (Alcon Laboratories Inc. USA) were included.

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Purpose: To study change in the contact of intraocular lens (IOL) with the posterior capsule with respect to the vertical versus horizontal orientation of the haptic-optic junction of the IOL using intraoperative spectral domain optical coherence tomography (SD-OCT).

Methods: Fifty eyes of 50 patients with senile immature cataract underwent topical phacoemulsification procedure with implantation of a monofocal IOL by a single experienced surgeon. The Rescan 700 SD-OCT system was used for intraoperative imaging.

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Background: Substance use is a significant contributor to emergency department (ED) visits. Little is known about ED utilization patterns of individuals with substance related diagnosis (SRD). We used electronic health records (EHR) from a large healthcare system in California to examine ED healthcare utilization and socio-demographic characteristics of individuals with SRDs.

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Purpose: To report the multimodal imaging findings in the case of unilateral acute idiopathic maculopathy (UAIM) associated with infection in a young girl with good clinical outcome.

Methods: Rare case report with multimodal imaging including fundus photography, optical coherence tomography (OCT), autofluorescence, multicolor imaging, OCT angiography, fluorescein angiography (FA), and polarization sensitive OCT (PS-OCT).

Results: A 13-year-old girl presented with blurring of vision in the left eye (OS).

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Allergic rhinitis and asthma are commonly coexisting conditions, significantly impacting patient health and quality of life. Despite their interrelation, diagnosing allergic rhinitis in patients with asthma remains challenging, leading to underdiagnosis and suboptimal management. The expert consensus engaged a modified Delphi method involving 29 experts including pulmonologists, ear, nose, and throat surgeons, and allergologists.

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Background: The rapidly changing policy climate related to cannabis legalization has led to drastic changes in cannabis use in the United States (US). Medical cannabis use is increasing overall, but at a faster rate among older adults compared to other age groups.

Objective: The aim was to investigate older adults' cannabis use behaviors and attitudes around disclosing medical cannabis use to their primary healthcare providers (HCPs).

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Carinal resection of tumour involving trachea and carina remains as a challenge for thoracic surgeons and anaesthesiologists. Resection is technically demanding and can be associated with significant morbidity and mortality. In this case report, we describe the successful management of carinal tumour with carinal resection in a 45-year-old female.

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Article Synopsis
  • The study investigates how polarization-sensitive optical coherence tomography (PS-OCT) can help evaluate corneal structure differences in thick corneas with and without keratoconus (KC).
  • Significant variations were found in various eye parameters between healthy and KC groups, indicating that KC affects corneal thickness and PR distribution.
  • The results highlight the distinct PR patterns and corneal thinning in KC eyes compared to the consistent structures in healthy eyes, emphasizing the potential of PS-OCT in diagnosing corneal conditions.
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Refugees and asylum seekers who identify as sexual minorities and/or who have been persecuted for same-sex acts maneuver through multiple oppressive systems at all stages of migration. Sexual minority refugees and asylum seekers (SM RAS) report experiencing a greater number of persecutory experiences and worse mental health symptoms than refugees and asylum seekers persecuted for reasons other than their sexual orientation (non-SM RAS). SM RAS are growing in numbers, report a need and desire for mental health treatment, and are often referred to therapy during the asylum process.

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The Histocompatibility and Identity Testing Committee offers an overview of the College of American Pathologists' (CAP) Proficiency Testing (PT) program, commemorating its significant 75th anniversary in 2024. The CAP PT program has undergone significant growth and evolution over the years, ultimately achieving Centers for Medicare and Medicaid Services approval. In 1979, CAP's partnership with the American Association for Clinical Histocompatibility Testing marked a pivotal moment, leading to the creation of the first proficiency testing survey in 1980.

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Mild cognitive impairment (MCI) is the precursor to the advanced stage of Alzheimer's disease (AD), and it is important to detect the transition to the MCI condition as early as possible. Trends in daily routines/activities provide a measurement of cognitive/functional status, particularly in older adults. In this study, activity data from longitudinal monitoring through in-home ambient sensors are leveraged in predicting the transition to the MCI stage at a future time point.

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Purpose: To assess the effect of change in ocular spherical aberration (SA) with adaptive optics on visual acuity (VA) at different defocus after implantation of extended depth-of-focus (EDOF) and enhanced monofocal intraocular lenses (IOLs).

Settings: Narayana Nethralaya Eye Hospital, Bangalore, India.

Design: Prospective, longitudinal, observational.

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Background: Among the novel robotic platforms, the Hugo RAS system is the second most studied platform, next to the da Vinci system, and we aim to address our experiences in radical prostatectomy (RP) with the Hugo RAS system.

Methods: We recorded our first 12 cases of prostate cancer undergoing RP with the Hugo RAS system. The median console time was 145 min and median hospital stay was 7 days.

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serovar Typhi (. Typhi) is a human-restricted pathogen that replicates in macrophages. In this study, we investigated the roles of the .

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Unlabelled: serovar Typhi ( Typhi) is a human-restricted pathogen that replicates in macrophages. In this study, we investigated the roles of the Typhi Type 3 secretion systems (T3SSs) encoded on Pathogenicity Islands (SPI) -1 (T3SS-1) and -2 (T3SS-2) during human macrophage infection. We found that mutants of .

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Background: Tumors with a high nephrometry score represent a challenging surgical scenario for which robotic partial nephrectomy (RPN) is a primary option in expert hands.

Objective: To compare perioperative and functional outcomes of off-clamp and on-clamp RPN in patients with renal masses with a high RENAL score (≥9).

Design, Setting, And Participants: For this retrospective analysis, an RPN data set including 1604 patients treated at three institutions between 2003 and 2021 was queried for cases with a RENAL score ≥9.

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Purpose: The purpose of this study was to identify and analyze the clinical and ocular surface risk factors influencing the progression of keratoconus (KC) using an artificial intelligence (AI) model.

Methods: This was a prospective analysis in which 450 KC patients were included. We used the random forest (RF) classifier model from our previous study (which evaluated longitudinal changes in tomographic parameters to predict "progression" and "no progression") to classify these patients.

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Dry eye disease (DED) is a commonly occurring, multifactorial disease characterized by reduced tear film stability and hyperosmolarity at the ocular surface, leading to discomfort and visual compromise. DED is driven by chronic inflammation and its pathogenesis involves multiple ocular surface structures such as the cornea, conjunctiva, lacrimal glands, and meibomian glands. The tear film secretion and its composition are regulated by the ocular surface in orchestration with the environment and bodily cues.

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Purpose: To develop a nomogram in cases with mismatch between subjective and Topolyzer cylinder, and based on the magnitude of the mismatch, customize a treatment plan to attain good visual outcomes post-laser-assisted in situ keratomileusis (LASIK) surgery.

Methods: The patients were evaluated preoperatively using corneal tomography with Pentacam. Five optimal corneal topography scans were obtained from the Topolyzer Vario were used for planning the LASIK treatment.

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Cerebellar ataxias (CAs) represent a group of autosomal dominant and recessive neurodegenerative disorders affecting cerebellum with or without spinal cord. Overall, CAs have preponderance for tandem nucleotide repeat expansions as an etiological factor (10 TREs explain nearly 30-40% of ataxia cohort globally). The experience of 10 years of common genetic ataxia subtypes for ≈5600 patients' referrals (Pan-India) received at a single center is shared herein.

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In this rapid growing eco-friendly research world, synthesis of non-toxic, highly effective photocatalyst for potential applications is necessary. Herein, a strong ability BiZrO nanoparticle (BZO NP) with pyrochlore structure was fabricated by solution combustion synthesis using green (Mentha spicata) and chemical (Glycine) fuels. The X-ray diffraction analysis confirms the formation of pure phase for synthesized BZO NP using pudina extract (BZOP NP) compared to BZO NP using Glycine fuel (BZOG NP).

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Background: Congenital toxoplasmosis (CT) is a widespread infection in several countries, and it is defined as an infection of a fetus, newborn, or infant under 1 year of age. Moreover, it represents a thread to pregnant women globally. The objective of our study is to evaluate a potential association between prematurity and CT and whether intrauterine transmission impacts gestational length during pregnancy.

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Inhalational therapy, today, happens to be the mainstay of treatment in obstructive airway diseases (OADs), such as asthma, chronic obstructive pulmonary disease (COPD), and is also in the present, used in a variety of other pulmonary and even non-pulmonary disorders. Hand-held inhalation devices may often be difficult to use, particularly for children, elderly, debilitated or distressed patients. Nebulization therapy emerges as a good option in these cases besides being useful in the home care, emergency room and critical care settings.

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