| 발표일자: |
2018년 11월 2일(금) ~ 11월 4(일) |
| 발표번호: |
P(e-poster)-409 |
| 발표장소: |
코엑스 컨퍼런스룸 3층 301 A-B |
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| To determine the interobserver agreement for assessing glaucomatous disc changes by using a novel technique based on stereo disc photographs analysis using a virtual reality headset and computer screen |
| (1)Associate consultant ,Glaucoma deaprtment,Sankara Nethralaya, Chennai
(2)Deputy Director, Glaucoma deaprtment,Sankara Nethralaya, Chennai
(3)Director, Glaucoma deaprtment,Sankara Nethralaya, Chennai
(4)Distinguished Senior Consultant,Glaucoma deaprtment,Sankara Nethralaya, Chennai |
| Dr Trupti Sudhir Patil (1)
Dr Ronnie George (2)
Dr B Shantha (3)
Dr Vijaya L (4) |
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Purpose : In this series, we report the interobserver agreement between fellows, optometrists and consultant for assessing glaucomatous disc changes using virtual reality headset in comparison with computer screen.
Methods : 3 optometrists, 3 glaucoma fellows and 1 glaucoma consultant analysed 52-disc photographs (16 glaucomatous discs and 36 healthy discs). Consultant findings were considered as gold standard. Pseudo stereo disc photo pairs were converted into a series in video format and were assessed using a mobile phone with the help of virtual reality headset for VR group and for DP group single disc photograph was assessed on computer monitor by same participant at different time. Observers evaluated vertical CD ratio, presence of neuro-retinal rim thinning, notch, presence of splinter haemorrhage, peripapillary atrophy and presence of glaucomatous damage. Agreement between observers was assessed by kappa statistics (k).
Results : Agreement for vertical CD ratio for VR group was moderate (k 0.40, 0.41, 0.50) between optometrists and consultants and (k 0.44, 0.55, 0.64) fellows and consultant. Disc photograph group agreement was poor to substantial (k 0.19, 0.6, 0.7) between optometrists and consultants and substantial (K 0.8, 0.8, 0.8) fellows and consultant. For all other disc analysis k less than 0.4 was noted for both the groups. Comparison for agreement for glaucomatous cupping vs agreement for healthy disc was done for both the group. Better agreement was noted for DP (k 0.2, 0.4, 0.4) as compared to VR group for fellow vs. consultant (0.04, 0.08, 0.1).
Conclusion : Smart phone technology is being increasingly used for glaucoma screening however agreement was better for disc photograph as compared to VR headset for fellows. This could be related to higher magnifications. Caution should be employed while analysing disc with VR headset
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