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Introduction: To describe the role of microscope integrated optical tomography (Mi-OCT) in removal of intrastromal corneal foreign body.Methodology: A young male presented with trauma to the right eye with sugarcane stick. Ocular examination revealed two sugarcane particles, approximately 3.5 mm in greatest dimension, embedded in the corneal stroma. For removal of foreign body, Mi-OCT was switched on and the area of interest was focused. Sugarcane particles appeared as hyperreflective structures embedded in the corneal stroma with everted edges of the overlying corneal epithelium and anterior stroma.Results: Both the sugarcane particles were removed successfully under real time images provided by Mi-OCT without causing any inadvertent damage to the corneal stroma.Conclusion: Mi-OCT can be used as an adjunct in emergency surgical procedures like removal of intrastromal corneal foreign bodies with accurate precision.

Objective: To describe the role of microscope integrated optical tomography (Mi-OCT) in passage of the encircling element during retinal detachment surgery.Materials and methods: Mi-OCT was switched on while passing scleral anchoring sutures to secure the encircling element. The depth of the suture tract was seen in real time while the needle was passed through the sclera. The amount of scleral intend achieved was assessed using Mi-OCT at the end of the surgery.Results: The depth of needle tract through the sclera and the amount of scleral indentation achieved while tying the sutures could be successfully analyzed using Mi-OCT.Conclusion: Mi-OCT can be used as an adjunct while training vitreoretinal fellows and trainees in surgical procedures like passage of scleral sutures for anchoring the encircling element.

Truenat MTB Plus assay was evaluated for diagnosing ocular tuberculosis (OTB) and detecting multi-drug resistant (MDR) and extremely-drug resistant (XDR) OTB. A total of 75 vitreous fluid specimens [five confirmed OTB, 40 clinically suspected OTB and 30 controls] were subjected to Truenat MTB Plus, multiplex PCR, and Xpert Ultra. Chips of Truenat were used for detecting rifampicin, isoniazid, fluoroquinolone and bedaquiline resistance. The performance was compared against culture, composite reference standard, and gene sequencing. The overall sensitivity of TruePlus, MPCR, and Ultra in diagnosing OTB was 66.6%, 73.3%, and 55.5%, respectively. Out of six cases with mutations in rpoB gene, RifR was detected in five by TrueRif and four by Ultra. Three MDR and one XDR-OTB were reported by Truenat. Truenat assay along with its strategic chips is a rapid and reliable tool for diagnosis of OTB and detection of drug resistance, including MDR and XDR-OTB. Abbreviations: OTB: Ocular tuberculosis; XDR: Extremely drug resistant; Ultra: Xpert MTB/RIF Ultra; Xpert: Xpert MTB/RIF; PCR: polymerase chain reaction; NAATs: Nucleic acid amplification tests; MDR: Multi Drug Resistant; NSP: National Strategic plan for elimination of tuberculosis; FqR: Fluoroquinolone resistant; BdqR: bedaquiline resistant; TrueRif: Truenat MTB Rif Dx; TruePlus: Truenat Plus; INH: Isoniazid; DST: Drug susceptibility testing; MGIT: Mycobacterial growth indicator tube; CRF: Composite reference standard; PPV: positive predictive value; NPV: negative predictive value; EPTB: extrapulmonary tuberculosis; VF: vitreous fluid; DNA: deoxyribonucleic acid; ATT: antitubercular therapy; RifR: Rifampicin resistance; RifS: Rifampicin susceptible; RifI: Rifampicin indeterminate. [ABSTRACT FROM AUTHOR]

Exogenous endophthalmitis (ExE) results from microbial infection as a complication of ocular surgery, penetrating ocular trauma, and intraocular foreign bodies. We herein review the classification of ExE, etiological agents, differential diagnosis and therapeutic challenges. Narrative Literature Review. Identification of the causative agent through ocular fluid analysis is central in the diagnostic work-up of ExE. Prompt intravitreal antimicrobial therapy is key to successful management of ExE and vitrectomy is essential in severe cases. In culture-negative cases, and in the presence of specific features, a diagnosis of sterile intraocular inflammation or toxic syndrome should be suspected. Strict adherence to treatment guidelines may improve outcomes of ExE, however the ultimate prognosis, especially in severe cases, may depend more on the virulence of the causative organism and associated ocular complications. Accurate differential diagnosis and effective treatment are crucial elements in the management and prognosis of non-infectious masquerades of ExE. [ABSTRACT FROM AUTHOR]