|Year : 2021 | Volume
| Issue : 1 | Page : 46-47
Scheimpflug imaging system: Opening up the black box of iris bombe
Shruthy Vaishali Ramesh1, Prasanna Venkatesh Ramesh2, Meena Kumari Ramesh3, Ramesh Rajasekaran4
1 Medical Officer, Department of Cataract and Refractive Surgery, Tiruchirappalli, Tamil Nadu, India
2 Medical Officer, Glaucoma and Research, Tiruchirappalli, Tamil Nadu, India
3 Head of the Department of Cataract and Refractive Surgery, Mahathma Eye Hospital Private Limited, Tiruchirappalli, Tamil Nadu, India
4 Chief Medical Officer, Mahathma Eye Hospital Private Limited, Tiruchirappalli, Tamil Nadu, India
|Date of Submission||13-Sep-2020|
|Date of Decision||31-Dec-2020|
|Date of Acceptance||12-Jan-2021|
|Date of Web Publication||10-Apr-2021|
Prasanna Venkatesh Ramesh
Mahathma Eye Hospital Pvt. Ltd., No.6, Seshapuram, Thennur, Trichy-620 017, Tamil Nadu
Source of Support: None, Conflict of Interest: None
|How to cite this article:|
Ramesh SV, Ramesh PV, Ramesh MK, Rajasekaran R. Scheimpflug imaging system: Opening up the black box of iris bombe. J Clin Ophthalmol Res 2021;9:46-7
|How to cite this URL:|
Ramesh SV, Ramesh PV, Ramesh MK, Rajasekaran R. Scheimpflug imaging system: Opening up the black box of iris bombe. J Clin Ophthalmol Res [serial online] 2021 [cited 2022 May 19];9:46-7. Available from: https://www.jcor.in/text.asp?2021/9/1/46/313470
Iris bombe [Figure 1]a and [Figure 1]b is the apposition of iris to lens, preventing aqueous flow from the posterior to the anterior chamber. Thus, pressure in the posterior chamber rises, resulting in anterior bowing of peripheral iris and obstruction of trabecular meshwork, inducing an acute attack of angle closure., In this patient anterior iris bowing, touches the corneal endothelium peripherally [Figure 1]c,[Figure 1]d,[Figure 1]e,[Figure 1]f. Despite laser peripheral iridotomies, iris bombe developed with chronic iridocyclitis and central posterior synechiae (occlusio pupillae). Scheimpflug imaging is a potential tool for monitoring 360° peripheral irido-corneal touch and evaluating treatment response objectively. Incidentally, the posterior segment evaluation in B-scan ultrasonography [Figure 2] revealed the features suggestive of membranes in the vitreous cavity, probably due to a sequelae of vitritis.
|Figure 1: (a) Apposition of the iris to the phakic lens posteriorly resulting in the anterior bowing of the peripheral iris with chronic iridocyclitis revealed by the old keratic precipitates (red arrows). (b) Central posterior synechiael (occlusio pupillae) membrane obscuring the lens surface. (c and d) Anterior segment optical coherence tomography reveals iris bowing forward and touching the corneal endothelium in the periphery. (e) Horizontal cut section (0&s#176;–180°) view in the Scheimpflug imaging system revealing the peripheral irido-corneal touch. (f) Vertical cut section (101°–281°) view in the Scheimpflug imaging system revealing the peripheral irido-corneal touch|
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|Figure 2: B-scan ultrasonography reveals the features suggestive of membranes in the vitreous cavity, probably due to a sequelae of vitritis|
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Although Scheimpflug imaging has left its footprint in the field of cornea, its application for anterior chamber evaluation remains untapped.
The major advantages of these devices are the noncontact nature of examination, repeatability, and range of quantitative and qualitative information they provide. They provide quantitative information with digital calipers which helps us objectively measure between any two points. Angle visualization in a noncontact, objective examination is a significant development in anterior segment imaging, which opens up the black box of iris bombe. It takes 25 radial scans of anterior chamber, hence providing us with visualization of 50 peripheral anterior synechiae regions of iris bombe thus providing us with enough data for a three dimensional mind's eye view of the angles in such scenarios. In addition, it has ease of image acquisition which does not require extensive training. A potential issue with these devices are their cost. Newer technologies are nearly always expensive, but a part of their expenses are typically balanced by the accompanied increase in the accuracy of the diagnosis. In addition, there is often a trend for reduction in cost with increasing availability of latest instruments.
Declaration of patient consent
The authors certify that they have obtained all appropriate patient consent forms. In the form the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.
Financial support and sponsorship
Conflicts of interest
There are no conflicts of interest.
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[Figure 1], [Figure 2]