Resolving Dilemmas in Perimetry, 1st ed. 2021 Illustrated Manual of Visual Field Defects

This book covers interpretation of visual fields by Humphrey and Octopus perimeters and discussion of Humphrey visual fields in a variety of ocular disorders.It examines dilemmas faced by an ophthalmologist while evaluating visual fields which do not match with the clinical picture. Glaucoma, the commonest condition for visual field investigation is discussed in detail. Logical reasoningfor incorporating perimetry in glaucoma management with a clear understanding of the challenges in its interpretation is delved into. The book progresses to advanced glaucoma and glaucoma progression. It discusses a systematic evaluation of various parts of the visual field so that the reader can make a calculated management plan for their patient.  

Each chapter attempts to clearly enunciate factors that help in the diagnosis and features which may be confused with other conditions. Fields which help diagnosing early, advanced glaucoma and glaucoma progression with images and methods of ensuring reasonable diagnostic accuracy are included. 

The book incorporates separate chapters on ocular conditions which also mimic visual field defects of glaucoma with detailed modes of correct diagnosis, diagnostic dilemmas arising from retinal, macular, vascular, visual pathway lesions mimicking visual field defects of glaucoma or while coexisting with glaucoma, supported by algorithms to achieve a quick diagnosis in a busy OPD without missing the clinical findings and by using minimal investigative modalities.  

This book helps clinicians to prevent over diagnosis or under diagnosis of glaucoma and helps diagnose cases with morbidities causing visual field defects.

What is perimetry, and how to obtain the best results?.- Incorporating perimetry in managing glaucoma.- Interpretation of Humphrey visual .- Challenges in interpreting perimetry in glaucoma.- Evaluating Progression in perimetry.- Interpretation of Octopus visual fields.- Progression by Octopus perimeter.- Structure function relation in Humphrey perimetry.- Structure function relation in Octopus perimetry.- Perimetry in Retinal, Choroidal and Macular disorders.- Perimetry in neurological disorders.- Perimetry in media opacities 

Maj Gen (Dr) Sagarika Patyal,SM,VSM(Retd) is currently a Senior Consultant at Center for Sight, New Delhi. Dr.Patyal completed her Diploma in Ophthalmology and MS from Army Hospital Delhi Cantt (Delhi University). She was trained in glaucoma from the Rajendra Prasad Center for Ophthalmic Sciences, AIIMS, New Delhi and PGDGM from IGNOU University.                             

Dr. Patyal has rich teaching experience for both undergraduate and postgraduate curricula and has taught in Armed Forces Medical College, Pune, Army College of Medical Sciences Delhi, Army Hospital Research and Referral Center, Base Hospital. She was also appointed as national faculty for glaucoma, MCI Inspector for MBBS and assessor for DNB and referee for Medical Journal of Armed Forces of India (MJAFI) and other indexed journals. Her subjects of interests are cataract, glaucoma, ocular surface, cornea, high altitude ocular diseases andtrauma. She has been instrumental in establishing telemedicine nodes in high altitude (Siachen) to help soldiers stationed in the highest battleground in the world. 

Dr. Patyal has more than 85 publications and presentations in international and national journals to her credit and has written chapters in books. She is member of All India Ophthalmological Society, Delhi Ophthalmological Society, Glaucoma Society of India, Pune Ophthalmological Society, Maharashtra Ophthalmic Society, Kolkata Association of Ophthalmologists and All India Women’s Ophthalmological Society. 

She was honored with Chief of Army Staff Commendation 2004, Special Achiever’s Award from Sunderji group of Institutes 2010, Chief of Army Staff Commendation 2011, AWWA Excellence Award for social work, Award for Best AFMRC project 2011(Research), Army Commander’s commendation – 2013, Sena Medal-2014 for work done in the highest multispeciality hospital in the world, Leh, Visis

Covers ocular fields by Humphrey field analyzer with fields in glaucoma and glaucoma progression

Chapters include varieties of macular and retinal diseases mimicking glaucoma

Explains correct interpretation by clinical examination /other investigations

Discusses diagnostic dilemmas such as neuro-ophthalmic conditions which need further investigation

Includes key points in every chapter to make the reader adept at pointing out the area of misinterpretation