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INDIAN JOURNAL OF OPHTHALMOLOGY Contents Vol. 56
No. 2
March-April 2008
Guest Editorial First World Glaucoma day, March 6, 2008: Tackling glaucoma challenges in India
97
R George, L Vijaya
Original Articles Optic disc topography of normal Indian eyes: An assessment using optical coherence tomography
99
Shaun Dacosta, Sheena Bilal, Babu Rajendran, P Janakiraman
The probable associations for corticocapsular adhesions in patients undergoing cataract surgery: A clinic-based observational study
103
Abhay R Vasavada, Shetal M Raj, M R Praveen, Viraj A Vasavada, Vaishali A Vasavada
Effects of intraoperative oxidated regenerated cellulose on wound healing reaction after glaucoma filtration surgery: A comparative study with Interceed and Surgicel
109
Akyol Nuray, Akpolat Nusret
Optic nerve sheath decompression for visual loss in intracranial hypertension: Report from a tertiary care center in South India 115 Suneetha Nithyanandam, George J Manayath, Ravindra R Battu
Evaluation of distance and near stereoacuity and fusional vergence in intermittent exotropia 121 Pradeep Sharma, Rohit Saxena, Makarand Narvekar, Ritu Gadia, Vimla Menon
Surgical outcome in monocular elevation deficit: A retrospective interventional study
127
Rakhi Bandyopadhyay, Shashikant Shetty, P Vijayalakshmi
Ophthalmology Practice Learning micro incision surgery without the learning curve
135
Ravi Thomas, Shoba Navin, Rajul Parikh
Community Eye Care Comparison of refractive errors and factors associated with spectacle use in a rural and urban South Indian population
139
Raju Prema, George Ronnie, Ramesh Sathyamangalam Ve, Arvind Hemamalini, Mani Baskaran, Govindaswamy Kumaramanickavel, McCarty Catherine, Lingam Vijaya
Brief Communications Inherited partial aniridia, microcornea with high myopia and Bergmeister’s papilla: A new phenotypic expression 145 Prashant Naithani, Ankur Sinha, Viney Gupta
Management of an irradiated anophthalmic socket following dermis-fat graft rejection: A case report
147
Kuldeep Raizada, Debraj Shome, Santosh G Honavar
Suprachoroidal collection of internal tamponading agents through a choroidal hole
149
Lingam Gopal, Nishank Mittal, Aditya Verma
15
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A case of Goldenhar-Gorlin syndrome with unusual association of hypoplastic thumb
150
Amitava Das, Biswarup Ray, Debabrata Das, Somnath Das
Ocular adnexal lymphoma in the Northeast Indian population
153
Dipankar Das, Panna Deka, Kasturi Bhattacharjee, Jayanta Kumar Das, Ganesh Kuri, Akshay Chandra Deka, Harsha Bhattacharjee
Direct aspiration of capsular bag material in a case of sequestered endophthalmitis
155
Lingam Gopal, Amit Nagpal, Aditya Verma
Clinical profile and visual outcome in cluster endophthalmitis following cataract surgery in Central India 157 Sumeet Malhotra, Partha Mandal, Gopal Patanker, Deepshikha Agrawal
Visual field defect as a presenting sign for hemorrhagic stroke caused by sildenafil
159
Morteza Mehdizadeh, Hamid Hosseini, Taher Yazdchi, Siamak Farahangiz
A case of neurofibromatosis 1 presenting with optic pathway glioma with an early onset and an aggressive course
161
Suma Ganesh, Archana Gupta, Manish Sharma, Sandeep Bhuttan
Combination of photodynamic therapy with intravitreal bevacizumab for post-peribulbar anesthesia (penetrating trauma)-persistent choroidal neovascular membrane
163
Nikunj Shah, Urmi Shah
Letters to the Editor Oculosporidiosis in a tertiary care hospital of Western Orissa, India
165
Archana Sood, Badri Badhu
Authors’ reply
165
Ravindra K Chowdhury, Sharmistha Behera, Debendranath Bhuyan, Gunasagar Das
Retinopathy of prematurity in Asian Indian babies weighing greater than 1250 g at birth
166
Niranjan Kumar, Vivek B Wani, Khalid Al Sabti
Authors’ reply
166
Anand Vinekar, Mangat R Dogra, Tiakumzuk Sangtam, Anil Narang, Amod Gupta
Spontaneous late-onset comitant acute non accommodative esotropia in children
167
Pramod Kumar Pandey, Pankaj Vats, Navjot Kaur, Ajit G Kulkarni
Author’s reply
168
Mihir Kothari
Pigmented squamous cell carcinoma of the limbus area: A rare case
169
E Shirzadeh
‘SIA-Soft’: A new software to calculate surgically induced astigmatism in comparison with manual mathematics by vector method
170
Samar K Basak, Soham Basak, Aritra Roy Chowdhury
Greenish discoloration of silicone intraocular lens
170
Rengaraj Venkatesh, Thangavel Thirumalai Kumar, Ravilla D Ravindran
Warming device for computer vision syndrome K Ilango
16
171
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170
Indian Journal of Ophthalmology
‘SIA-Soft’: A new software to calculate surgically induced astigmatism in comparison with manual mathematics by vector method Dear Editor, Surgically induced astigmatism (SIA) is not just the simple subtraction of keratometric or K-values before and after the operation. It involves vector mathematics with algebra and trigonometry.1 For every ophthalmologist, it is not possible to go back to 12 (10 + 2) standard mathematical knowledge and calculate SIA. Even if one were to calculate it correctly, it takes a lot of time and effort for a number of patients. Despite this difficulty, calculating SIA allows the surgeon to have an accurate picture of how his surgery is affecting the corneal curvature and helps improve his surgery. Computers can be programmed to do all this tedious mathematical calculations for us and that is why this software ‘SIA-Soft’ has been developed. The basic mathematics behind this software is the ‘gold standard’ vector analysis of SIA.2 We have validated the accuracy and operating feasibility of this Windows-based software for calculating SIA for a number of patients in comparison with gold standard mathematical vector analysis done manually. The preoperative and postoperative keratometric data (K-values) with the axes of 30 different patients were taken randomly from our cataract clinic either from manual small incision cataract surgery (MSICS) or phacoemulsification category. These 30 sets of data were given to two co-authors for calculation of SIA and the angles of error in a masked way. The Þrst co-author (a student of Class XII) was asked to calculate the SIA on the basis of pure mathematics and submit the data for single and multiple patients and he was also asked to give the mean and standard deviation (SD). Similarly, the second co-author was asked to calculate SIA using the software with the same set of data. Both of them were asked to submit the Þnal data to a third observer for Þnal analysis. The overall results by two different observers are given in Table 1. Average time taken for each calculation for the Þrst observer by mathematical method was 5.27 ± 0.48 min and for the second observer by using SIA-Soft software was 6.15 ± 0.50 sec (*P