Topic

#Instruments in Ophthalmology

5 articles
  1. Students Gallery 1 Apr 2021 26 min read

    Lensopedia: Lenses in Ophthalmology

    Introduction: While there are several instruments in ophthalmological practice, lenses form an inseparable part of an ophthalmologist’s arsenal. Available in various sizes and shapes, they are crucial in aiding the visualization of remote areas of the eye and facilitate therapeutic interventions in those areas which would be next to impossible to even imagine without their availability. Harnessing the unlimited potential of optics, it allows an ophthalmologist to play with the most dynamic form of energy, light, provided he behold sound and in-depth knowledge about the lens. This write-up aims at helping one acquire this knowledge and employ them for a successful practice. Lens: A piece of glass or other transparent material with curved sides for concentrating or dispersing light rays. (Lexico Oxford Dictionary) Classification of lenses (Based on their utility) Lens for the anterior segment: Lens for posterior segment Gonioscopy Principles and Optics The critical angle for the cornea-a

    Dr. Niranjan Karthik Senthil Kumar
  2. Students Gallery 1 Apr 2021 16 min read

    Instruments used in Cataract Surgery: Ready Reckoner for the Post Graduates

    Cataract Surgery is the most common surgery performed all over the world. Proper knowledge of surgical instruments used in cataract surgery is essential. This article gives you an overview and description of instruments commonly used in cataract surgery. Simcoe's irrigation- aspiration cannula: Design: Available in two different designs. The original model also called the direct Simcoe where aspiration is through the silicone tube and irrigation through the main hub. The surgeon holds the syringe attached to the silicone tubing which is used to generate suction for aspiration in his/her left hand and the irrigation line is attached to the main central hub. The other model is the Reverse Simcoe where irrigation is through the main hub. The surgeon uses a syringe attached to the main hub to generate suction for aspiration. Cannulas are available in different sizes: 21,22,23 gauge which has an aspiration port size of 0.5,0.35,0.3 mm respectively. These are 15 mm long in size with an angle

    Dr. Rohit Rao
  3. Students Gallery 1 Apr 2021 27 min read

    Instruments Used in Vitreoretinal Surgery: A Comprehensive Guide for the Post Graduates

    History : While writing about the instrumentation of retinal surgery, the first name came in my mind was the none other than the Jules Gonin, who not only identified the Retinal tear as a prerequisite for the retinal detachment in the way back in 1904 in his first paper with series of 3 cases but also described the management of the same later on after constant hard work over the next two decade. He made major contribution and impact in the field of retinal surgery, immediately after his major presentation at the International Congress of Ophthalmology in 1929, and hence it is worth starting the topic recalling him. From the Gonin era to date, there were three major events in terms of development. 1st – improvement in instrumentation used to evaluate vitreoretinal pathology. 2nd – Evolution of the methods to create a chorioretinal adhesion around retinal breaks. 3rd – the development of a variety of techniques to tackle the vitreoretinal adhesion and hence to close the break permanentl

    Dr. Pratik Shah
  4. Articles 1 Apr 2021 40 min read

    Instruments used in Corneal Procedures and Surgeries

    Although tales and myths of ocular surgery and organ transplantation appear in numerous ancient texts, the earliest accounts of ophthalmic diseases were written as a treatise by Sushruta, in the 6th century BC. Sushruta described 76 eye diseases, out of which 51 required surgical treatment. In the western world, the concepts of corneal surgery date back to Greek physician Galen (130-200AD). The concepts to improve corneal clarity by surgery were developed over the next centuries and especially in the 17th and 18th centuries. But the major scientific progress and experimentation in the field of corneal surgeries happened in the 19th century. The progress in corneal surgery was hindered by a lack of understanding of immunology, asepsis, surgical procedures, and of course, the lack of proper instrumentation. Emmert Wolf wrote over a century ago, “A man is only as good as his tools.” Early surgeons were hampered by a lack of proper surgical instruments. Over the centuries, innumerable opht

    Dr. Hema Joshi, MBBS, DO, DNB · Dr. Ankita Patil
  5. Students Gallery 1 Apr 2021 9 min read

    Instruments Used in Oculoplasty

    Oculoplasty Instruments Oculoplasty deals with the aesthetic part of ophthalmology. Precision is the key in Oculoplasty as the outcomes depend on it. Good precision can be achieved with good knowledge of the instruments used in oculoplasty and when to use them. This article would give a brief idea on basic instruments used. Nettleship Punctum Dilator It is the instrument with very fine blunt tip, with a tapering end Uses Dilation of puncta during diagnostic and therapeutic probing Before syringing in small puncta, Diagnosing punctal stenosis, Canalicular repair with monoka stent, Silicone tube intubation Nettleship Punctum Dilator Castroviejo Lacrimal Dilator It is the instrument with Double-ended with fine and medium taper end. Uses Dilation of puncta during diagnostic and therapeutic probing Before syringing in small puncta, Diagnosing punctal stenosis, Canalicular repair with monoka stent, Castroviejo Lacrimal dilator Thudicum’s Nasal Speculum It is a thin instrument with flanges, o

    Dr. Rohit Rao

Other topics

Review Vitreoretina Top Ten Series Tips & Pearls Made Easy Macular Diseases Cornea and External Eye Diseases Must Read Preferred Practise Pattern Learn from Masters Treatment Uvea and Intraocular Inflammation Case Discussion Cataract Surgery i-File Pediatric Ophthalmology Glaucoma Imaging Grand Rounds infection