Gunjan P Tank

Aim: To evaluate the effect of intraocular pressure (IOP) on central corneal thickness (CCT), horizontal corneal diameter (HCD), axial length (AL) in patients with primary congenital glaucoma (PCG) after antiglaucoma surgery. Materials and Methods: In this hospital based interventional study 36 patients (66 eyes) of PCG who underwent antiglaucoma surgery were included in the study. For each patient visual acuity, anterior and posterior segment examination, IOP, AL, CCT, HCD and refraction (in clear media) were recorded pre and post operatively (3 weeks, 3 months, 6 months). B scan ultrasonography was done to measure AL and to rule out posterior segment pathology. Surgery was performed by a glaucoma expert (by a single surgeon). Results: Bilateral involvement was present in 83.33% with the most common symptom being photophobia and watering (30.56% each). The mean IOP, CCT, HCD, VCD and AL before surgery were 26.88+/-2.78 mmHg, 614.38+/-89.41 µ, 14.41+/-1.26mm, 13.19+/-1.46mm and 24.78+/-2.21mm and at 6 months were 13.85+/-1.93 mmHg, 548.56+/-63.13 µ, 14.62+/-0.49 mm, 13.34+/-1.10 mm and 25.73+/-1.36mm respectively. 59.1% of the patients had corneal clearing at 6 months. Conclusion: Control of IOP affects various parameters of eye like CCT, HCD and AL. Early surgery is the definitive line of management for controlling IOP in PCG patients. Keywords: Axial length, Corneal diameter, Primary congenital glaucoma.

Aims: To evaluate donor cornea by using eye bank specular microscope and evaluate outcome of keratolplasty according to the graft condition. Materials and Methods: This was a prospective study of 30 patients who undergone keratoplasty. Donor cornea was evaluated by slit lamp biomicroscopy and after preservation in MK media, evaluated using eye bank specular microscope. Final decision of transplantation was made on grading of specular microscopy. All patients undergone penetrating keratoplasty and post-operative outcome was measured. Results: In our study majority of donors were in age group of 21-40 years. Endothelial cell count of >3000 cells/mm2 was observed in 60% cases, while 2500-3000 cells/mm2 in 26.67% cases. The reason for penetrating keratoplasty were corneal opacity or scarring (40%), PBK (23.33%), acute infective keratitis (13.33%), regraft due to graft failure (10%), ABK (10%) and corneal dystrophy (3.33%). Postoperative clear graft was seen in 60% cases while cloudy in 20% and opaque in 20% cases. It was observed that large number of recipients (46.66%) had post-operative visual acuity more than 6/60. Conclusions: Though tissue utilization can be optimized with the use of eye bank specular analyzer, final outcome depends on multiple factors. Few tissues of older age can be utilized if having good endothelial count. Keywords: Corneal blindness, Eye bank specular analyzer, Keratoplasty.

Objectives: During COVID pandemic, with schools being closed, digital platforms are being extensively used for online teaching and learning. Children are being exposed to video display units (VDU) for prolonged durations making them susceptible to ocular problems and development of the Computer Vision Syndrome. Through this study, we attempted to study the effect of this added use of VDUs through online teaching on eyes of school going children. Materials and Methods: A Google survey of 18 questions was prepared assessing the pattern of online teaching sessions, type of devices used, use of protective accessories and presence of ocular symptoms. The form was floated on social platforms for parents of school going children. Data was collected and analysed using Microsoft Excel and percentage and p value calculated using chi square test. Results: Out of 982 children, 494 (50.3%) had one or more ocular symptoms. Headache was found in 205(41.49%), excessive rubbing of eyes in 178 (36.03%), pain in 155 (31.37%), redness in 135 (27.32%), watering in 132 (26.72%), blurring of vision in 67 (13.56%) and changes in glass prescription in 42 (8.50%) children. We found total duration of online class and continuous use of VDUs to be statistically significant influencing factors. Conclusion: Online teaching learning should be cautiously conducted as the use of VDUs can affect the ocular health of the children.   Keywords: COVID 19 pandemic, online classes, Video Display Units, Computer vision syndrome