Assessment of anterior segment changes using multimodal imaging in a case of post-traumatic transient myopia
Bibliographic record
Abstract
A 17-year-old male presented with sudden onset painless diminution of vision in the right eye post blunt trauma to eye with tennis ball 2 days ago. Visual acuity (VA) was 2/60 in the right eye, improving to 6/9 with a refraction of –6.50/–0.50 × 30°, and 6/9 in left eye improving to 6/6 with a refraction of –1DS. Addition of cycloplegic agent did not alter the refractive status. Slit-lamp examination showed shallow anterior chamber with crystalline lens and commotion retinae in right eye, while the left eye was within normal limits. His intraocular pressure was 14 and 20 mm Hg in the right and left eye, respectively. At presentation, there was shallowing of the anterior chamber well demonstrated by ASOCT, UBM, and IOL master (2.55 mm), with an increase in lens thickness (3.92 mm) on A-scan and ciliochoroidal effusion with ciliary body edema and anterior rotation of ciliary processes on UBM [Figure 1 and Table 1], which returned to normal (ACD 3.68 mm and LT 3.63 mm) with improvement in VA to 6/9 on follow-up visit on day 10 [Figure 2]. Left eye was within normal limits [Figure 3].Figure 1: (a) Infrared image of anterior segment of right eye (b) 16 mm radial scan ASOCT (DRI Triton, Topcon Inc., Japan) showing disappearance of ciliary sulcus with increased iris convexity and anterior lens capsular reflection (c) 6 mm ASOCT scan focused at limbus highlighting the angle structures, yellow dotted lines represent the mirror image of the corneal scan, yellow rectangular box showing obliterated ciliary sulcus (d) UBM (Ophthalmic Technologies, Toronto, Canada) showing shallow anterior chamber depth with forward bowing of iris with anteriorly rotated ciliary process (arrowhead) with ciliochoroidal effusion (star)Table 1: Clinical parameters at presentation and follow upFigure 2: At 2 weeks follow up (a) Infrared image of anterior segment of right eye (b) 16 mm radial scan ASOCT (DRI Triton, Topcon Inc., Japan) showing normal ciliary sulcus with iris convexity and anterior lens capsular reflection (c) 6 mm ASOCT scan focused at limbus highlighting the angle structures, yellow dotted lines represent the mirror image of the corneal scan, rectangular box showing reappearance of ciliary sulcus (d) UBM (Ophthalmic Technologies, Toronto, Canada) showing normal anterior chamber depth with normal convexity of iris, disappearance of ciliochoroidal effusionFigure 3: (a) Infrared image of anterior segment of left eye (b) 16 mm radial scan ASOCT (DRI Triton, Topcon Inc., Japan) showing normal ciliary sulcus with iris convexity and anterior lens capsular reflection (c) 6 mm ASOCT scan focused at limbus highlighting the angle structures, yellow dotted lines represent the mirror image of the corneal scan (d) UBM (Ophthalmic Technologies, Toronto, Canada) showing normal anterior chamber depth with normal convexity of irisDiscussion Posttraumatic transient myopia varies between –4.75D and –5.25D.[1,2] Various pathogenic mechanisms include increased anteroposterior thickness of lens,[1] an anterior shift of lens-iris diaphragm,[3] ciliary spasm,[4] and ciliochoroidal effusion with ciliary body edema.[5] The ciliochoroidal effusion and ciliary body edema results in anterior rotation of ciliary body and ciliary processes, resulting in narrowing or disappearance of the ciliary sulcus; reduces the distance between opposing ciliary processes, and slackens the lens zonules which result in increase in lens thickness and anterior shift of lens-iris diaphragm.[1] Use of multimodal imaging complements the clinical findings and helps to better demonstrate the etiology of anterior segment changes post blunt trauma. 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 Nil. Conflicts of interest There are no conflicts of interest.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".