Retinal detachment after open globe injury

Management of open globe injury: a narrative review

Open globe injuries are a significant global cause of visual loss, including unilateral and bilateral blindness. Prognosis is predicted by injury severity, with lower presenting visual acuity and more posterior injuries associated with poor visual outcomes, although even the most severely injured eyes with no perception of light vision may regain some visual function. In addition to severity of the primary injury, the secondary injuries and complications causing poor outcomes include proliferative vitreoretinopathy (PVR) and endophthalmitis. Endophthalmitis is common after open globe injury, affecting up to 16.5% of patients. Systemic antibiotic prophylaxis is commonly used, with a limited evidence base, while intraocular antibiotics are less commonly used but have stronger supporting evidence of efficacy. Endophthalmitis rates are also reduced by prompt primary repair, which may also support recovery of visual acuity. PVR is not prevented or treated by any pharmacologic interventions in current clinical practice, but the incidence of post-traumatic PVR may be reduced by early vitrectomy within the first 4-7 days after injury. Ocular trauma training is often limited in Western ophthalmic surgical training programmes, and patients with ocular trauma often require the input of multiple subspecialists. In this context, it is important that patients have an overview and coordination of the different aspects of their care, with ownership by one lead clinician.

Traumatic retinal detachment: A contemporary update

Retinal detachment following ocular trauma (TrRD) is one of the leading causes of blindness and visual impairment worldwide. In the absence of a standardized definition, the diagnosis of traumatic retinal detachment relies on identifying a history of trauma that precedes the detachment. There is an increasing pool of data regarding the etiology and epidemiology of TrRD.Various causes of TrRD mentioned in the literature include work-related eye trauma in construction and manufacturing industries, sports injuries, explosive eye injuries, road traffic accidents, and intraocular foreign bodies. Although there is extensive literature on post-trauma retinal detachments, a comprehensive discussion of its pathogenesis, management, outcomes, and complications is lacking. This article offers an in-depth review of the epidemiology, risk factors, pathogenesis, diagnosis, management, and outcomes of TrRD based on the current literature. A literature review was conducted in PubMed and Google Scholar using the keywords 'ocular trauma,' 'traumatic retinal detachments,' 'open globe injury,' 'closed globe injury,' and 'post-traumatic retinal detachment.'

Retinal Detachments after Open-Globe Injury: Risk Factors and Outcomes

PURPOSE

To identify risk factors for retinal detachment (RD) after open-globe injury (OGI) and evaluate outcomes of RD repair after OGI.

DESIGN

Case-control study.

PARTICIPANTS

Overall, 769 patients presented with 786 OGIs, which were surgically managed with ≥ 30 days of follow-up. Of the 786 eyes, 223 developed RD, the other 551 served as controls, and RD status of 12 eyes was unknown.

METHODS

A retrospective chart review was performed of all OGIs presented to the University of Michigan between 2000 and 2022. Multivariable regression identified risk factors for RD after OGI and predictors of poor vision after RD repair. Kaplan-Meier analysis estimated time from OGI to RD.

MAIN OUTCOME MEASURE

Predictors of visual outcome after RD repair after OGI.

RESULTS

After OGI, 223 (28.4%) of 786 eyes were diagnosed with RD, with > 73% diagnosed within a month. Predictors of RD include posterior injury (zone II vs. I odds ratio [OR], 1.60 [95% confidence interval {CI}, 1.04-2.46]; P = 0.0331; zone III vs. I OR, 2.29 [1.53-3.41]; P < 0.0001), vitreous hemorrhage (OR, 2.29 [1.54-3.1]; P < 0.0001), and presenting acuity worse than count fingers (CFs) (OR, 2.65 [1.69 - 4.16]; P < 0.0001). Retinal detachment repair took place in 142 of 223 eyes. The mean logarithm of minimal angle of resolution visual acuity (VA) improved from 2.3 ± 0.8 to 1.7 ± 0.9 after RD repair at 6-month follow-up, with 51.2% of eyes achieving CF or better vision. Single surgery anatomic success rate was 69.7% and final anatomic success was 88%. Predictors of vision worse than CF include history of ocular surgery (OR, 0.32 [0.11-0.94]; P = 0.039), proliferative vitreoretinopathy (PVR; OR, 0.39 [0.16 - 0.92]; P = 0.032), aphakia (OR, 0.25 [0.08 - 0.77]; P = 0.016), and redetachment (OR, 0.26 [0.1 - 0.63]; P = 0.003).

CONCLUSIONS

Most RD occur within the first month after OGI. Patients with posterior injuries, vitreous hemorrhage, or poor presenting VA were more likely to develop RD after OGI. Anatomic success was achieved in the majority, as was final VA of CF vision or better. History of ocular surgery, PVR at time of repair, aphakia, and redetachment were risk factors for a poor outcome.

FINANCIAL DISCLOSURE(S)

The author(s) have no proprietary or commercial interest in any materials discussed in this article.

Randomised controlled trial of adjunctive triamcinolone acetonide in eyes undergoing vitreoretinal surgery following open globe trauma: The ASCOT study

BACKGROUND/AIMS

To investigate the clinical effectiveness of adjunctive triamcinolone acetonide (TA) given at the time of vitreoretinal surgery following open globe trauma (OGT).

METHODS

A phase 3, multicentre, double-masked randomised controlled trial of patients undergoing vitrectomy following OGT comparing adjunctive TA (intravitreal and subtenons) against standard care (2014-2020). The primary outcome was the proportion of patients with at least 10 Early Treatment Diabetic Retinopathy Study (ETDRS) letter improvement in corrected visual acuity (VA) at 6 months. Secondary outcomes included: change in ETDRS, retinal detachment (RD) secondary to PVR, retinal reattachment, macular reattachment, tractional RD, number of operations, hypotony, elevated intraocular pressure and quality of life.

RESULTS

280 patients were randomised over 75 months, of which 259 completed the study. 46.9% (n=61/130) of patients in the treatment group had a 10-letter improvement in VA compared with 43.4% (n=56/129) of the control group (difference 3.5% (95% CI -8.6% to 15.6%), OR=1.03 (95% CI 0.61 to 1.75), p=0.908)). Secondary outcome measures also failed to show any treatment benefit. For two of the secondary outcome measures, stable complete retinal and macular reattachment, outcomes were worse in the treatment group compared with controls, respectively, 51.6% (n=65/126) vs 64.2% (n=79/123), OR=0.59 (95% CI 0.36 to 0.99), and 54.0% (n=68/126) vs 66.7% (n=82/123), OR=0.59 (95% CI 0.35 to 0.98), for TA vs control.

CONCLUSION

The use of combined intraocular and sub-Tenons capsule TA is not recommended as an adjunct to vitrectomy surgery following OGT.

TRIAL REGISTRATION NUMBER

NCT02873026.

Visual outcomes of the surgical rehabilitative process following open globe injury repair

Background

The path of rehabilitation of an eye after open globe injury (OGI) may require multiple additional secondary surgeries after the initial repair. Although much has been studied regarding the outcomes of secondary surgeries after open globe repair, it can be challenging to understand the possible implications of the surgical rehabilitative process. This retrospective study considers the benefits of the required additional secondary surgeries for a consecutive series of OGI patients.

Methods

OGI patients who had at least one additional surgery after the initial open globe repair (OGR) were studied retrospectively. Additional inclusion criteria included: follow up of at least 12 months since the initial injury and at least 3 months since their most recent surgery, and no additional planned interventions. Preoperative visual acuity was compared to final visual acuity. Additionally, the odds of achieving ambulatory vision (≥20/800) and reading vision (≥20/40) were calculated after each indicated consecutive surgery.

Results

A cohort of 74 eyes from 73 patients met our inclusion criteria. These patients underwent a mean of two additional surgeries. The mean logMAR VA improved from 2.3 (HM) at presentation to 1.4 (20/150), or a 9-line Snellen equivalent improvement. Upon reaching their final visit status, 50% of patients had achieved ambulatory vision and 30% of patients had achieved reading vision. The odds of achieving ambulatory vision after completion of all the rehabilitative surgical process compared to the vision prior to the secondary rehabilitative surgery were higher (OR: 19.1, 95% CI: 7.9 - 30.4, p = 0.0008) as were the odds of achieving reading vision (OR: 4.6, 95% CI: 0.2 - 9.0, p = 0.04). With subsequent second, third, and fourth additional surgeries, the odds of achieving either ambulatory or reading vision at the final visit compared to their preoperative visual acuities were not significant (p > 0.05) but the visual acuity continued to trend toward visual improvement.

Conclusion

Approximately 50% of individuals who required additional surgery at UMN achieved ambulatory vision and 30% achieved reading vision. The odds of visual improvement through the surgical rehabilitative process were very high, with the greatest gains generally achieved after the first surgery.

Outcomes of Retinal Detachment (RD) after Open Globe Injury (OGI) and Independent Validation of the RD-OGI Scoring System

PURPOSE

To independently validate the retinal detachment (RD) after open globe injury (OGI) score (RD-OGI Score) as a clinical prediction model for estimating the risk of RD after OGI, and to characterize outcomes of RD stratified by RD-OGI risk category.

DESIGN

Retrospective, multi-institutional cohort study.

SUBJECTS

A validation cohort of 236 eyes with OGI managed at two U.S. academic institutions from 2017-2021 was compared to the predictions of the RD-OGI Score model and to the derivation cohort of 893 eyes with OGI used to develop the RD-OGI Score model.

METHODS

RD-OGI Scores were calculated and patients were stratified into three risk groups (low, moderate, and high) for analysis. The incidence of RD in the validation cohort was used to calculate standard performance metrics to evaluate predictive accuracy of the RD-OGI Score.

MAIN OUTCOME MEASURES

Area under the curve (AUC), sensitivity, specificity, and accuracy of the RD-OGI Score; anatomic success (retina attached or detached) and best corrected visual acuity (BCVA) at last follow-up.

RESULTS

In the validation cohort, 92 of 236 eyes (39%) developed RD after OGI. The RD incidence predicted by the RD-OGI Score was strongly correlated with actual RD incidence in the validation cohort (Spearman ρ= 0.92, P<0.001). The RD-OGI Score demonstrated a high discriminativeness with the validation cohort (AUC= 0.84, 95% CI: 0.79-0.89). An RD-OGI Score of 2.5 was found to have 73% accuracy, 93% sensitivity, and 60% specificity for predicting no RD (RD-OGI <2.5) versus RD (RD-OGI ≥2.5). Median BCVA at last follow-up for successfully reattached eyes was comparable for high risk (∼20/380) and moderate risk (∼20/300) eyes (P>0.99), but both were significantly worse compared to low risk eyes (∼20/25 Snellen) (P=0.010).

CONCLUSIONS

The RD-OGI Score reliably predicts the risk of developing RD after OGI. In eyes that develop RD, a higher RD-OGI Score is strongly correlated with a greater risk for poor functional and anatomic outcomes. An RD-OGI Score ≥2.5 identifies eyes at substantial risk for RD and adverse outcomes and may serve as a useful cutoff for guiding referral to a vitreoretinal surgeon after primary globe closure.

Improved Visual Outcomes after Severe Open-Globe Injuries Associated with Perioperative Vitreoretinal Evaluation

PURPOSE

To investigate the impact of perioperative evaluation by a vitreoretinal surgeon on outcomes after severe open-globe injury (OGI).

DESIGN

Retrospective, comparative study.

SUBJECTS

Open-globe injury cohorts from 2 academic United States ophthalmology departments with disparate OGI management protocols and vitreoretinal referral patterns.

METHODS

Patients with severe OGI (presenting visual acuity [VA] of counting fingers or worse) from the University of Iowa Hospitals and Clinics (UIHC) were compared with patients with severe OGI from the Bascom Palmer Eye Institute (BPEI). At UIHC, almost all cases of OGI were repaired by anterior segment surgeons, with postoperative vitreoretinal referral at the surgeon's discretion. In contrast, at BPEI, all OGIs were both repaired and managed postoperatively by a vitreoretinal surgeon.

MAIN OUTCOME MEASURES

Rate of vitreoretinal surgeon evaluation, rate of pars plana vitrectomy (PPV) (either primary or secondary), and VA at the last follow-up.

RESULTS

Overall, 74 subjects from UIHC and 72 subjects from BPEI met the inclusion criteria. There were no differences in preoperative VA or rates of vitreoretinal pathology. The rate of vitreoretinal surgeon evaluation was 100% at BPEI and 65% at UIHC (P < 0.001), and the rate of PPV was 71% at BPEI and 40% at UIHC (P < 0.001). Median VA at the last follow-up in the BPEI cohort was 1.35 logarithm of the minimum angle of resolution (logMAR) (interquartile range [IQR], 0.53-2.30, corresponding to a Snellen VA of ∼ 20/500) compared with a median VA of 2.70 logMAR (IQR, 0.93-2.92, corresponding to a Snellen VA of light perception) in the UIHC cohort (P = 0.031). Overall, 68% of patients in the BPEI cohort had an improvement in VA from presentation to last follow-up versus 43% in the UIHC cohort (P = 0.004).

CONCLUSIONS

Automatic perioperative evaluation by a vitreoretinal surgeon was associated with a higher rate of PPV and improved visual outcomes. Prompt evaluation by a vitreoretinal surgeon, either preoperatively or in the early postoperative period, should be considered, when logistically feasible, in severe OGIs because PPV is frequently indicated and may result in significant visual improvement.

FINANCIAL DISCLOSURE(S)

Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.

Presenting clinical characteristics of open globe injuries in ocular trauma: baseline analysis of cases in the ASCOT national clinical trial

BACKGROUND/OBJECTIVES

The Adjunctive Steroid Combination in Ocular Trauma (ASCOT) trial is a unique pragmatic, multi-centre, patient and assessor masked, randomised controlled trial. We evaluate the clinical characteristics and pathology of this large trial cohort of patients with open globe injuries undergoing vitreoretinal surgery, including the associations between patient characteristics and their baseline vision.

SUBJECTS/METHODS

We (i) summarise demographics, injury history and ocular history of the 280 participants recruited into the ASCOT trial using descriptive statistics; (ii) analyse the national and seasonal variation across England and Scotland in these participant characteristics; and (iii) explore the associations between participant demographic, trauma history, ocular history and presenting baseline visual acuity (measured using the Early Treatment Diabetic Retinopathy Study, ETDRS) using multivariable regression analyses.

RESULTS

The majority of participants with open globe penetrating injuries were of white ethnicity (233, 84%), male (246, 88%), with a median age of 43 years (IQR 30-55 years). There was considerable variability in presenting visual acuity with 75% unable to read any letters on the ETDRS chart, whilst the median ETDRS letter score was 58 (IQR 24-80) for those who could read ≥1 letter. The most common causes of injury were workplace related (31%) or interpersonal violence (24%). Previous eye surgery, visual axis corneal scar, lens status, hyphaemia and vitreous haemorrhaging were found to be associated with presenting vision as measured by the ETDRS chart.

CONCLUSION

The ASCOT trial provides valuable insights into the spectrum of pathology of patients with open globe eye injuries undergoing vitreoretinal surgery. The identified causes of injury and clinical presentation of the cases will help in training and resource planning to deal with these often challenging surgical cases.

TRIAL REGISTRATION

EudraCT No. 014-002193-37. HTA Project 12/35/64.

Predictors of Long-term Ophthalmic Complications after Closed Globe Injuries Using the Intelligent Research in Sight (IRIS®) Registry

Purpose

To identify clinical factors associated with the need for future surgical intervention following closed globe ocular trauma.

Design

Retrospective cohort study.

Subjects Participants and/or Controls

Patients in the American Academy of Ophthalmology Intelligent Research in Sight (IRIS®) Registry with a diagnosis of closed globe ocular trauma occurring between 2013 and 2019, identified using International Classification of Disease, 10th Revision and Systematized Nomenclature of Medicine codes.

Methods

Diagnosis codes were used to identify multiple concomitant diagnoses present on the date of closed globe ocular trauma. Survival analyses were performed for each outcome of interest, and linear regression was used to identify clinical factors associated with the risk of surgical intervention.

Main Outcome Measures

Outcomes included retinal break treatment, retinal detachment (RD) repair, retinal break treatment or RD repair, glaucoma surgery, and cataract surgery.

Results

Of the 206 807 patients with closed globe ocular trauma, 9648 underwent surgical intervention during the follow-up period (mean, 444 days): 1697 (0.8%) had RD repair, 1658 (0.8%) had retinal break treatment, 600 (0.3%) had glaucoma surgery, and 5693 (2.8%) had cataract surgery. Traumatic cataract was the strongest risk factor for cataract surgery (hazard ratio, 13.0; 95% confidence interval, 10.8-15.6), traumatic hyphema showed highest risk for glaucoma surgery (7.24; 4.60-11.4), and vitreous hemorrhage was the strongest risk factor for retinal break treatment and detachment repair (11.01; 9.18-13.2 and 14.2; 11.5-17.6, respectively) during the first 60 days after trauma date. Vitreous hemorrhage was a risk factor for cataract surgery at > 60 days after trauma date only. Iris-angle injury was the strongest risk factor for glaucoma surgery > 60 days after trauma, while vitreous hemorrhage remained the strongest factor for retinal break treatment and detachment repair at > 60 days. Traumatic hyphema was a risk factor for all surgical outcomes during all follow-up intervals.

Conclusions

Diagnosis of concomitant traumatic cataract, vitreous hemorrhage, traumatic hyphema, and other risk factors may increase the likelihood of requiring surgical intervention after closed globe ocular trauma.

The Ocular Trauma Score Underestimates Visual Recovery for the Most Severe Open-Globe Injuries

PURPOSE

To compare visual outcomes after open-globe injury (OGI) with those predicted by the Ocular Trauma Score (OTS), and to investigate the effect of treatment with pars plana vitrectomy (PPV).

DESIGN

Retrospective cohort study.

SUBJECTS

Patients presenting with OGI to an academic United States ophthalmology department from 2017 to 2020.

METHODS

Best-corrected visual acuity (VA) measurements at the most recent follow-up were compared with final VA predicted by the OTS, based on preoperative injury characteristics. The most recently measured VA of patients treated with PPV during initial OGI repair (primary PPV group) was compared with patients treated with PPV after initial OGI repair (secondary PPV group) and patients never treated with PPV (No PPV group).

MAIN OUTCOME MEASURES

Best-corrected VA in the injured eye at last follow-up; secondary outcome measures included the occurrence of vitreous hemorrhage at any time, occurrence of retinal detachment at any time, rates of additional surgery, and rates of enucleation.

RESULTS

One-hundred and thirty-three subjects with OGI were identified and analyzed. The overall rate of PPV was 32%. Predictors of worse VA at last follow-up included older age (P = 0.047) and worse presenting VA (P < 0.001). Visual acuity outcomes for eyes in OTS categories 2 to 5 did not significantly differ from OTS predictions. However, eyes in OTS category 1 had a higher likelihood of last follow-up VA of light perception (LP) to hand motion (46% in the study cohort vs. 15% predicted by the OTS, P = 0.004) and a lower likelihood of no LP (33% vs. 74%, P < 0.001). The secondary PPV group had the worst VA at presentation among the 3 groups (P = 0.016), but VA at last follow-up did not significantly differ between the study groups (P = 0.338).

CONCLUSIONS

The most severe OGIs (i.e., OTS category 1) had better visual outcomes than predicted by the published OTS expectations, and secondary PPV was associated with significant visual improvement despite poor prognostic predictions. Evaluation by a vitreoretinal surgeon should be considered for all patients with severe OGI, especially those in OTS category 1.

FINANCIAL DISCLOSURE(S)

Proprietary or commercial disclosure may be found after the references.

Risk Factors for Failure of Final Anatomic Surgical Reattachment in Retinal Detachments From Combat Ocular Trauma

BACKGROUND AND OBJECTIVE

The goal of this study was to determine the anatomic outcome of traumatic retinal detachment (RD) from combat ocular trauma.

MATERIALS AND METHODS

Retrospective study of patients sustaining a traumatic RD in Operation Iraqi Freedom and Operation Enduring Freedom who were evacuated to Walter Reed Army Medical Center from 2001 to 2011. The Fisher exact test, Wilcoxon rank sum test, and Agresti and Coull methods were used for analyses.

RESULTS

There were 143 eyes of 134 patients in which a traumatic RD developed, of a total of 890 eyes of 652 patients in the Walter Reed Ocular Trauma Database. Based on our results, predictors for failure to reattach the retina include maculaoff status (P = .0002), open-globe injury (P = .03), proliferative vitreoretinopathy postoperatively (P = .002), and presence of hyphema (P = .02). Intraocular foreign body and time to initial retinal surgery did not increase risk for failure. Thirty-four percent (34%) of eyes failed to be reattached.

CONCLUSIONS

Traumatic RD due to injury sustained in a combat zone resulted in poor prognosis, with 82.09% of eyes with RD having a best-corrected visual acuity worse than 20/200. The anatomic success of RD repair was shown to be 65.71%, likely owing to the severity of the injuries, concomitant systemic injuries, and delayed surgical intervention. [Ophthalmic Surg Lasers Imaging Retina 2022;53:493-501.].

Analysis of ocular injury 1-year outcome in survivors of Beirut Port ammonium nitrate blast

Purpose

Ascertain the 1-year outcome of patients who sustained open eye injuries from the Beirut Port ammonium nitrate (AN) explosion, one of the most powerful non-nuclear explosions in history.

Methods

Retrospective chart review of the operated eyes in 2 major eye hospitals.

Results

Out of 42 patients with open globe injury that was originally sutured, 29 patients (34 eyes) were followed at the 1-year mark. The initial vision in logMAR (mean ± SD) was 2.93 ± 0.87 (hand motion equivalent) and the final vision was 1.80 ± 1.47 (counting finger 2 m equivalent). No light perception (NLP) vision was noted in 12 eyes on presentation and 10 eyes remained so, while 2 eyes reached light perception (LP) vision. Eight eyes had an intraoperative expulsive choroidal hemorrhage (7 NLP and 1 LP both pre- and postoperatively), and 6 of the 8 developed phthisis. All eyes that developed phthisis had NLP preoperatively and postoperatively. Ocular Trauma Score (OTS) correlated inversely with both initial and final vision (p < 0.001). Zone of injury inversely correlated with initial vision (p = 0.02) and positively with final vision (p < 0.001). Final vision was significantly worse in zone 3 vs. zones 1 and 2 (3.2 ± 0.5) vs. 0.9 ± 1.1) (p < 0.001) injuries, as was the initial vision (3.3 ± 0.5 vs. 2.7 ± 0.8; p = 0.002).

Conclusion

The OTS, which provides prognostic information for serious ocular trauma, also yields valuable prognostic information for AN-associated ocular injuries. Expulsive choroidal hemorrhage and NLP vision at presentation remain very poor prognostic signs.

POSTERIOR SEGMENT INJURIES IN OPERATION IRAQI FREEDOM AND OPERATION ENDURING FREEDOM: 2001 to 2011

BACKGROUND/PURPOSE

To characterize the nature of posterior segment ocular injuries in combat trauma.

METHODS

Eyes in the Walter Reed Ocular Trauma Database were evaluated for the presence of posterior segment injury. Final visual outcomes in open-globe versus closed-globe injuries and by zone of injury and the types of posterior segment injuries in open-globe versus closed-globe injuries were assessed.

RESULTS

Four hundred fifty-two of 890 eyes (50.8%) had at least one posterior segment injury. The mechanism of injury was most commonly an improvised explosive device in 280 (62.0%) eyes. Sixty-one patients (13.5%) had a Zone I injury, 50 (11.1%) a Zone II injury, and 341 (75.4%) a Zone III injury. Patients with Zone I injuries were more likely to have a final visual acuity of 20/200 or better compared with patients with either a Zone II (P < 0.001) or Zone III injury (P = 0.007). Eyes with a closed-globe injury were more likely to have a final visual acuity of 20/200 or better compared with those with an open-globe injury (P < 0.001). Furthermore, closed-globe injury compared with open-globe injury had a lower risk of vitreous hemorrhage (odds ratio 0.32, P < 0.001), proliferative vitreoretinopathy (odds ratio 0.14, P < 0.001), and retinal detachment (odds ratio 0.18, P < 0.001) but a higher risk of chorioretinal rupture (odds ratio 2.82, P < 0.001) and macular hole (odds ratio 3.46, P = 0.004).

CONCLUSION

Patients with combat ophthalmic trauma had similar posterior segment injury patterns to civilian trauma in open-globe versus closed-globe injuries. Zone II and III injuries were associated with a worse visual prognosis.

Reliability of the ocular trauma score for the predictability of traumatic and post-traumatic retinal detachment after open globe injury

AIM

To elucidate the question of whether the ocular trauma score (OTS) and the zones of injury could be used as a predictive model of traumatic and post traumatic retinal detachment (RD) in patients with open globe injury (OGI).

METHODS

A retrospective observational chart analysis of OGI patients was performed. The collected variables consisted of age, date, gender, time of injury, time until repair, mechanism of injury, zone of injury, injury associated vitreous hemorrhage, trauma associated RD, post traumatic RD, aphakia at injury, periocular trauma and OTS in cases of OGI.

RESULTS

Totally 102 patients with traumatic OGI with a minimum of 12mo follow-up and a median age at of 48.6y (range: 3-104y) were identified. Final best corrected visual acuity (BCVA) was independent from the time of repair, yet a statistically significant difference was present between the final BCVA and the zone of injury. Severe trauma presenting with an OTS score I (P<0.0001) or II (P<0.0001) revealed a significantly worse BCVA at last follow up when compared to the cohort with an OTS score >III. OGI associated RD was observed in 36/102 patients (35.3%), whereas post traumatic RD (defined as RD following 14d after OGI) occurred in 37 patients (36.3%). OGI associated RD did not correlate with the OTS and the zone of injury (P=0.193), yet post traumatic RD correlated significantly with zone III injuries (P=0.013).

CONCLUSION

The study shows a significant association between lower OTS score and zone III injury with lower final BCVA and a higher number of surgeries, but only zone III could be significantly associated with a higher rate of RD.

Outcomes and longitudinal trend of traumatic cataract wound dehiscence in patients with blunt ocular injury

Longitudinal trends on traumatic cataract wound dehiscence are scant. In this study, we present the characteristics of traumatic cataract wound dehiscence using 15 years of longitudinal trend in one of the largest medical centers in Taiwan for a period when cataract surgeries were gradually shifting from extracapsular cataract extraction (ECCE) to phacoemulsification. All patients with a prior cataract surgery who suffered from blunt open globe trauma between 2001 and 2015 at a tertiary referral center in Taiwan were included. The number of cases per year; type of prior cataract surgery; visual acuity (VA); mechanism and place of injury were analyzed. The risk factors associated with final VA were investigated in patients followed up for ≥ 1 month. Seventy-six eyes of 75 patients were included and all of them were traumatic cataract wound dehiscence with a prior ECCE (65 eyes) or phacoemulsification. The most common mechanism and place of injury was fall and at home in both cataract surgical types. The mean log of the minimal angle resolution (logMAR) of final VA was 2.15 ± 0.88 (ECCE) and 1.61 ± 0.83 (phacoemulsification) (P = .026). The most significant risk factors associated with worse final VA were retinal detachment at the initial visit and low ocular trauma score (both P < .001). Long-term visual outcome of phacoemulsification wound dehiscence was better than that of ECCE wound after a blunt trauma.

Characteristics of work-related eye trauma in construction and manufacturing industries

CLINICAL RELEVANCE

Knowledge of work-related eye trauma in the construction and manufacturing industries will facilitate planning of policies and practices to protect against such occurrences.

BACKGROUND

The aim of this study was to compare demographic, epidemiological, and clinical characteristics of work-related eye trauma in workers in the construction and manufacturing industries.

METHODS

Medical board disability reports of subjects who experienced work-related eye trauma were investigated in this retrospective comparative study. Subjects were separated into two groups - construction and manufacturing - and the demographic, epidemiologic, and clinical characteristics within the two groups were compared.

RESULTS

The construction group included 138 eyes of 132 subjects and the manufacturing group included 82 eyes of 77 subjects. Demographic characteristics of the groups were similar (p > 0.05). The number of work-related eye trauma incidents was found as decreased during winter in construction (p < 0.001), but a similar trend was not found in manufacturing (p > 0.05). Head traumas as reason for work-related eye trauma (p < 0.001), and concomitant systemic diseases including bone fracture and traumatic brain injuries (p < 0.001 and p = 0.012) were significantly associated with eye trauma in manufacturing. Open globe injury was more common in construction (p = 0.046), and chemical injury was more common in manufacturing (p < 0.001). Retinal detachment was more prevalent in construction (p = 0.042). Hand motion or worse final visual acuity was more prevalent in manufacturing (p = 0.007) and the final visual acuity better than 6/60 was more prevalent in construction (p = 0.045).

CONCLUSION

Chemical injuries are more common in manufacturing, whereas open globe injuries and retinal detachments occur more frequently in construction. Permanent low vision and blindness are more commonly associated with work-related eye trauma in manufacturing.

Open-globe injury caused by barbed fish hook repaired using the back-out method: a report of two cases

Fish hook open-globe injuries (OGIs) are challenging to repair surgically because of the backward-projecting barb near the hook's point that prevents withdrawal of the hook. The most commonly reported ophthalmic surgical technique for removal of barbed hooks is advance-and-cut, wherein the fish hook is pushed through an iatrogenic wound to the exterior of the globe, the barb is cut off, and the shank is backed out of the entry wound. We report 2 cases of zone I OGIs with retained fish hooks successfully repaired using the back-out technique. This strategy involves enlarging the entry wound to allow the entire hook and barb to be backed out, decreasing iatrogenic injuries and eliminating the need for wire cutters.

Controlled release of triamcinolone from an episcleral micro film delivery system for open-globe eye injuries and proliferative vitreoretinopathy

Open globe trauma is the major cause for single eye blindness that stem from subsequent proliferative vitreoretinopathy (PVR). Though biomaterials and tissue engineering have significantly advanced drug delivery and management of human diseases, currently there is no effective drug formulation or device to pharmacologically mitigate PVR formation after open-globe eye trauma. This highlighted the challenge we are facing to bring the technology from bench to bedside. The current study reported an engineered episcleral drug film using biodegradable material, Poly(L-lactide)-co-poly(ɛ-caprolactone), and triamcinolone acetonide (TA) as a model drug. The film can be conveniently sized into any shape to fit the configuration of the eye globe trauma and easily installed onto the ruptured sclera during primary trauma repair surgery. The film allows therapeutic TA to slow release for at least 6 months without toxicity and demonstrated a significant benefit to reduce the odds of developing severe PVR by 5.7 times when compared with a no-drug film control on a rabbit trauma PVR model. Our results suggested this micro episcleral drug film as promising drug delivery carrier for the targeted treatment of various unwanted retinal proliferation diseases.

Factors Associated with Visual Outcome after Primary Repair of Open-Globe Injury by Ophthalmology Residents in Training in a Tertiary Eye Center

Purpose

To assess factors associated with visual outcome after open-globe injury (OGI) repair by trainees.

Methods

In this observational study, charts of OGIs repaired by trainees at King Chulalongkorn Memorial Hospital, Chulalongkorn University, Bangkok were retrospectively reviewed. Preoperative, intraoperative, and postoperative outcomes (day 1, month 1, and month 6 postoperation) were analyzed.

Results

A total of 78 OGIs presented in a 10-year period. A biphasic pattern was found among the young and the elderly. Approximately 73.6% of the cases had had surgical repair outside office hours. A majority of cases had been caused by machinery and hammers, and had visual acuity (VA) <20/200. Three cases were reported as having been unsuccessful intraoperatively for globe repair. A fifth of the cases required evisceration/enucleation within 2 weeks of presentation. Presenting VA worse than hand motion was associated with the risk of evisceration/enucleation (OR 14.5, P=0.013). VA improved at 6 months postoperation to the range of counting fingers and 20/200 (OR 15.6, P<0.01). High ocular trauma scores (OTSs) was associated with lower risk of evisceration/enucleation, and 12% retinal detachment (RD) was discovered, of which 90% occurred within 1 month after OGI repair.

Conclusion

Most OGIs were efficiently managed by the trainees, seldomly requiring assistance from subspecialists. Poor initial VA was associated with high risk of visual loss, whereas higher OTSs were inversely related to lower risk of evisceration or enucleation. There was a higher percentage of participants with final VA of 20/100-20/20 than the preoperative period. Precaution and careful evaluation of RD in the early postoperative period is recommended.

Surgical management and outcomes of pediatric open globe injuries requiring vitrectomy

PURPOSE

To describe surgical management and establish visual outcomes of open globe injury (OGI) in pediatric patients requiring vitrectomy.

METHODS

Forty-eight eyes of 48 pediatric patients underwent vitrectomy for OGI with secondary vitreoretinal complications in the eye center of Jilin University were included. Characteristics of patients, details of ocular examination and operation, presenting and final visual acuity were recorded.

RESULTS

Presenting visual acuity less than 20/400 was found in 44 eyes (91.7%), which included no light perception (NLP) in four eyes. At last visit, there was no eyes with visual acuity of NLP, and 19 eyes (39.6%) had a vision recovery to 20/400 or better. Mechanisms of injury, intraocular contents prolapse, presence of hyphema, intraocular foreign body, vitreous hemorrhage, retinal detachment, and total time from injury to PPV > 2 weeks were significant predictors of visual prognosis. Logistic regression analysis showed that hyphema was a significant predictive factor for poor visual outcome.

CONCLUSION

Visual acuity was improved in most of the patients with OGI in this study. Hyphema is an important presenting ocular sign in estimating the post-vitrectomy visual outcome for OGI in children. Proper timing of vitrectomy is suggested, and in this study patients may benefit more with early vitrectomy as less proliferative vitreoretinopathy (PVR) was found together with a better visual acuity.

Molecular Targets for Proliferative Vitreoretinopathy

While innovations in the surgical management of retinal detachment (RD) with proliferative vitreoretinopathy (PVR) have significantly improved anatomic and visual outcomes over the years, recurrent RD due to PVR remains the major limitation to success. There are currently no medical therapies proven to be effective against PVR in humans. Increased understanding of the pathophysiology and risk factors for PVR have helped guide investigations for molecular targets. Drugs that counteract inflammation, proliferation, and growth factors are the leading candidates for treatment of PVR. This review discusses the ongoing search for pharmacologic therapies, with an emphasis on the results of recent clinical investigations.

The epidemiology and outcomes of combat ocular trauma among local nationals managed at a deployed military hospital in Afghanistan

BACKGROUND/OBJECTIVES

There is limited published data on combat ocular trauma (COT) among local nationals managed at deployed United States (US) and United Kingdom (UK) military hospitals in recent conflicts. We report the epidemiology and outcomes of COT from a deployed military hospital in Afghanistan.

SUBJECTS/METHODS

In this retrospective case series, consecutive injuries requiring ophthalmic surgery at a military hospital in Afghanistan where the sole US and UK ophthalmologist(s) were deployed between January 2017 and September 2019 were reviewed. The main outcomes were mean post-operative visual acuity (VA) in open and closed globe injury and the incidence of retinal detachment after open globe repair.

RESULTS

There were 102 eyes of 84 patients who had ocular injuries and underwent ophthalmic surgery at the military hospital. Most patients were male (81 [96%]) and were local nationals (71 [85%]). Blast exposure (82 [80%]) was the most common mechanism of injury. Mean post-operative VA was 1.24 ± 2.29 logMAR (20/348 Snellen equivalent) in open globe injury and 1.59 ± 1.17 logMAR (20/778 Snellen equivalent) in closed globe injury. After open globe repair, retinal detachment developed in 8 of 18 (44%) eyes.

CONCLUSIONS

COT injuries often resulted in poor post-operative VA and retinal detachment after open globe repair was common. The high incidence and severity of COT sustained by local civilians and combatants in this study may support programs to increase the availability and wear of combat eye protection among local nationals partnered with US and coalition troops.

Clinical, radiographic, and intraoperative risk factors for retinal detachment after open globe injury

PURPOSE

Retinal detachment (RD) is a vision-threatening complication of open globe injuries (OGI). This study sought to assess clinical, radiographic, and intraoperative risk factors for RD after OGI. A secondary goal was to test the retinal detachment after open globe injury (RD-OGI) score.

METHODS

Records of patients undergoing OGI repair at a single trauma center over 3 years were reviewed using a retrospective case series design. Eyes that were enucleated or lost to follow up within 30 days of OGI without evidence of RD were excluded. Potential risk factors for RD development were assessed by logistic regression or chi-square tests were appropriate and were entered into a multivariate logistic regression if significant on univariate analysis. Risk of RD for each eye was categorized by its RD-OGI score.

RESULTS

Seventy-three eyes (72 patients) were included. In univariate analysis, afferent pupillary defect, worse visual acuity, posterior injury, vitreous hemorrhage, and posterior segment volume loss (PSVL) on CT were strong predictors of RD. In multivariate analysis, only PSVL on CT (adjusted OR 10.8, P = 0.025) maintained a statistically significant association with RD risk. At 1 year, 5% of low-risk eyes, 20% of moderate-risk eyes, and 67% of high-risk eyes developed RD. These rates were not significantly different from the RD-OGI derivation or validation cohorts (P = 0.90 and P = 0.67, respectively).

CONCLUSION

PSVL on CT increases the risk of RD after OGI. The RD-OGI Score was a good prognostic tool for assessing RD risk after OGI in this population.

Open Globe Injury with Intraocular Foreign Body

Purpose

To investigate characteristics of Open Globe Injuries (OGI) that presented with Intra-Ocular Foreign Body (IOFB), along with their long-term visual outcomes, complications and need for subsequent surgeries.

Methods

Retrospective interventional consecutive case series of OGIs with IOFBs that presented to the Eye Trauma service at the Massachusetts Eye and Ear from 2010 to 2015. Data collected included time from injury to OGI repair, location of injury and IOFB, retinal detachment (RD) rate, presenting and final visual acuity (VA) and subsequent surgeries.

Results

Fifty-seven consecutive cases of OGIs with IOFBs were included. The majority of patients were male (93%), mean age was 37 years and mean follow-up was 28 +/- 22 months. The median time from injury to OGI repair was 0 days (range: 0-16 days). Overall, 38/57 (66.7%) eyes achieved final vision of 20/40 or better and 43/57 (75.4%) vision of 20/150 or better. Zone I injuries were the most common (86%), followed by Zone II (16%), and Zone III (10%). 33 cases had IOFBs in the anterior segment only and 24 cases had posterior segment involvement. In total, 30% of cases (17/57) were complicated by an RD, 58.3% (14/24) in the posterior versus 9.1% (3/33) in the anterior IOFB group.( p<0.01). There were no cases of endophthalmitis. Posterior IOFB and higher zone of injury were found to be risk factors for RD both at presentation (all p<0.05) and post-primary repair.(all p<0.05) Posterior IOFB was associated with higher vitrectomy rates both at presentation (p<0.0001) and post-primary repair (p=0.002) and worse long-term visual outcome (p = 0.014).

Conclusion

OGIs with IOFB involving the posterior segment are associated with higher complication and re-operation rates and worse visual prognosis compared to those involving the anterior segment only.

Contextual Assessment of Retinal Injuries – Tasks of the Ophthalmological Expert

The ophthalmologic assessment of causal relationships is subject to formal guidelines, depending on the legal field (social law in the statutory accident insurance, civil law in the private accident insurance). After determining all objective and subjective findings of the individual case with complete recording of the medical facts, the ophthalmologist has the task of making a summarizing assessment of the existing cause-and-effect relationship. With regard to the distinction between retinal damage caused by an accident or retinal disease not caused by an accident, it is necessary to weigh up the natural causality according to the state of medical experience on the basis of the criteria strength of association, consistency, specificity, temporal sequence, dose dependence, agreement with previous findings, experimental reliability and analogous consideration. All records of medical findings from the patientʼs medical history and the individual description of the accident must be included in the expert opinion. In the case of several competing causes (often accident and pre-existing damage), the social law in the statutory accident insurance must present the causal contributions with roughly estimated probabilities. In civil law, valid for the private accident insurance, the existence of partial causality (approx. 25, 50, 75%) must be evaluated.

Characteristics and treatments of ocular blast injury in Tianjin explosion in China

BACKGROUND

To document characteristics and treatments of ocular blast injury from a fire and explosion.

METHOD

Authors retrospectively evaluated 116 patients with 166 eye injuries from six hospitals. Terminology of ocular injury referred to Birmingham Eye Trauma Terminology, and best-corrected visual acuity (BCVA) was categorized with the ocular trauma score (OTS) grading system. Incidence, preoperational and follow-up BCVA, treatment of severe ocular blast injuries were surveyed.

RESULTS

Oculoplastic injuries accounted for the majority of eye injuries, while globe injuries were presented in 52 eyes with median baseline OTS 70 ranging from 26 to 100. No endophthalmitis occurred. The mean timing of the first-stage operations was 9.4 ± 6.4 h after blast, while second-stage operations were performed on average 14.7 ± 0.9 days post blast. Final BCVA of 68.8% of eyes achieved 20/200 or better as followed, 7 open globe injuries had a BCVA of no light perception. Additionally, eyes presenting rupture, retinal detachment, vitreous hemorrhage, choroidal injury and initial BCVA less than 20/200 had worse final visual outcomes, while globe penetration was not associated with poor visual acuity.

CONCLUSION

Various ocular injuries were commonly in the casualties of blast, in which open-globe injuries have worst visual prognosis. OTS is a valid approach for evaluation of prognosis and optimizing the therapeutic strategies subsequently in the massive casualty. Intense rescue and careful examination, proper surgery should be performed correctly to rescue patients.

Thomas A. Swift's Electric Rifle Injuries to the Eye and Ocular Adnexa: The Management of Complex Trauma

PURPOSE

To report the ocular and adnexal injuries sustained by patients with Thomas A. Swift's electric rifles (TASER; TASER International, Scottsdale, AZ), review the literature, and discuss the management of this complex trauma.

DESIGN

Multicenter, retrospective case series and literature review.

PARTICIPANTS

Seventeen eyes of 16 patients (5 eyes of 5 patients treated at 3 institutions, and 12 eyes of 11 previously reported cases).

METHODS

The clinical data of 17 eyes were pooled. Spearman's correlation coefficient was used to assess the association between the extent of TASER injury and patient outcomes.

MAIN OUTCOME MEASURES

Extent of TASER injury (zone of injury, penetrating vs. perforating) and association with patient outcomes (visual acuity [VA] and retinal detachment [RD]).

RESULTS

In our cohort, 4 patients were transported by law enforcement and 1 was transferred from a community hospital. Four patients were taken to the operating room for TASER removal and globe repair; 1 patient underwent removal in the emergency room. Of 17 pooled cases, 12 (71%) involved open-globe injury. Of these, there was a high rate of zone 3 injuries (100%; n = 12) and a high incidence of RD (73%; 8 of 11, eviscerated eye excluded). Among patients with closed-globe injury (n = 5), 1 patient demonstrated exudative RD and 1 patient demonstrated retinal dialysis with RD. Of 10 patients with RD, 1 (10%) achieved resolution with monitoring (exudative RD); 1 (10%) underwent cryopexy and pneumatic retinopexy; 3 (30%) underwent vitrectomy, and 5 (50%) with poor prognosis did not undergo vitreoretinal surgery. In the 3 patients who underwent vitrectomy, all 3 (100%) demonstrated redetachment resulting from proliferative vitreoretinopathy and required additional surgery. Visual acuity on presentation was significantly correlated with final VA (ρ = 0.783; P = 0.02). Men (94%) were more likely than women (6%) to sustain TASER trauma. Median age was 26 years. There was a 50% rate of loss to follow-up.

CONCLUSIONS

Thomas A. Swift's electric rifle injuries to the eyes or ocular adnexa represent complex trauma. Zone 3 injuries are common. The visual prognosis is guarded, and eyes may require multiple surgeries to preserve vision. Patients are at high risk for loss to follow-up by way of incarceration.

Reduction in interhemispheric functional connectivity in the dorsal visual pathway in unilateral acute open globe injury patients: a resting-state fMRI study

This study investigated the changes in interhemispheric functional connectivity (FC) of the whole brain in open globe injury (OGI) patients, using voxel-mirrored homotopic connectivity (VMHC), and their relationships with clinical features. Totally, 16 male and 2 female acute OGI patients and 18 sex, age, and education-matched healthy volunteers were enrolled in the study. All subjects were scanned through functional magnetic resonance imaging (fMRI). Receiver operating characteristic (ROC) curves analyses had been used to identify the VMHC in these brain areas could be used as biomarkers to distinguish OGI and from healthy control (HC). The mean VMHC values in multiple brain areas and clinical OGI manifestations were evaluated with a Pearson correlation analysis. OGI patients had significantly decreased VMHC in the bilateral calcarine/lingual/cuneus (BA18, 19, 30) and middle occipital gyrus (BA18, 19). The OGI patients had abnormal interhemispheric FC in the dorsal visual pathway, which may represent the pathophysiological mechanism that underlies acute vision loss after OGI.

SMOKING IS A RISK FACTOR FOR PROLIFERATIVE VITREORETINOPATHY AFTER TRAUMATIC RETINAL DETACHMENT

PURPOSE

To determine the incidence of retinal redetachment due to proliferative vitreoretinopathy after open-globe trauma in smokers and nonsmokers.

METHODS

A total of 892 patients comprising 893 open-globe injuries, in whom 255 eyes were diagnosed with a retinal detachment, and 138 underwent surgical repair were analyzed in a retrospective case-control study. Time to redetachment was examined using the Kaplan-Meier method and analysis of risk factors was analyzed using Cox proportional hazards modeling.

RESULTS

Within one year after retinal detachment surgery, 47% (95% CI, 39-56%) of all 138 repaired retinas redetached because of proliferative vitreoretinopathy. Being a smoker was associated with a higher rate of detachment (adjusted hazard ratio 1.96, P = 0.01). As shown in previous studies, the presence of proliferative vitreoretinopathy at the time of surgery was also an independent risk factor for failure (adjusted hazard ratio 2.13, P = 0.005). Treatment with vitrectomy-buckle compared favorably to vitrectomy alone (adjusted hazard ratio 0.58, P = 0.04). Only 8% of eyes that redetached achieved a best-corrected visual acuity of 20/200 or better, in comparison to 44% of eyes that did not redetach (P < 0.001).

CONCLUSION

Proliferative vitreoretinopathy is a common complication after the repair of retinal detachment associated with open-globe trauma, and being a smoker is a risk factor for redetachment. Further study is needed to understand the pathophysiologic mechanisms underlying this correlation.

Limitation of computed tomography scan in ocular trauma in diagnosing posterior globe rupture and retinal detachment

Ocular trauma with penetrating eye injury or globe rupture is an ophthalmic emergency. Immediate but gentle ocular assessment is mandatory to diagnose the extent of the injury. Imaging modalities are valuable in aiding diagnosis and management in open globe injury due to the difficulty of full eye assessment in the presence of multiple head and facial injuries. This report presents a case of an elderly man with ocular trauma of the left only seeing eye where computed tomography scan showed anterior globe rupture and the possibility of posterior globe rupture due to discontinuity of the posterior sclera. Primary repair and exploration of the left eye revealed no posterior globe rupture. Post-operative B-scan revealed a total retinal detachment with intact posterior globe. Vision of the left eye after pars planar vitrectomy and tamponade of the retina detachment with heavy silicone oil improved to 1/60. Computed tomography scan in ocular trauma has limitations especially in diagnosing retinal detachment and posterior globe rupture.

Network centrality in patients with acute unilateral open globe injury: A voxel‑wise degree centrality study

The present study aimed to investigate functional networks underlying brain‑activity alterations in patients with acute unilateral open globe injury (OGI) and associations with their clinical features using the voxel‑wise degree centrality (DC) method. In total, 18 patients with acute OGI (16 males and 2 females), and 18 healthy subjects (16 males and 2 females), closely matched in age, sex and education, participated in the present study. Each subject underwent a resting‑state functional magnetic resonance imaging scan. The DC method was used to assess local features of spontaneous brain activity. Receiver operating characteristic curve analysis was used to distinguish OGIs from healthy controls (HCs). Correlation analysis was used to examine the association between the observed mean DC values of different brain areas and behavioral performance. Compared with HCs, patients with acute unilateral OGI had significantly increased DC values in the bilateral primary visual cortex (V1/V2) and left precuneus (PCUN), and significantly decreased DC values in the right insula, left insula, right inferior parietal lobule (IPL)/supramarginal gyrus (SMG), IPL/SMG, right supplementary motor area and right postcentral gyrus. Additionally, in the acute OGI group, it was observed that the duration of OGI was negatively correlated with the DC signal value of the bilateral V1/V2 (r=‑0.581; P=0.011) and left PCUN (r=‑0.508; P=0.031). Acute OGI led to brain functional network dysfunction in a number of brain regions, which may indicate impairment of the visual cortex and other vision‑associated brain regions in OGI.

Validation of the Retinal Detachment after Open Globe Injury (RD-OGI) Score as an Effective Tool for Predicting Retinal Detachment

PURPOSE

The Retinal Detachment after Open Globe Injury (RD-OGI) Score is a clinical prediction model that was developed at the Massachusetts Eye and Ear Infirmary to predict the risk of retinal detachment (RD) after open globe injury (OGI). This study sought to validate the RD-OGI Score in an independent cohort of patients.

DESIGN

Retrospective cohort study.

PARTICIPANTS

The predictive value of the RD-OGI Score was evaluated by comparing the original RD-OGI Scores of 893 eyes with OGI that presented between 1999 and 2011 (the derivation cohort) with 184 eyes with OGI that presented from January 1, 2012, to January 31, 2014 (the validation cohort).

METHODS

Three risk classes (low, moderate, and high) were created and logistic regression was undertaken to evaluate the optimal predictive value of the RD-OGI Score. A Kaplan-Meier survival analysis evaluated survival experience between the risk classes.

MAIN OUTCOME MEASURES

Time to RD.

RESULTS

At 1 year after OGI, 255 eyes (29%) in the derivation cohort and 66 eyes (36%) in the validation cohort were diagnosed with an RD. At 1 year, the low risk class (RD-OGI Scores 0-2) had a 3% detachment rate in the derivation cohort and a 0% detachment rate in the validation cohort, the moderate risk class (RD-OGI Scores 2.5-4.5) had a 29% detachment rate in the derivation cohort and a 35% detachment rate in the validation cohort, and the high risk class (RD-OGI scores 5-7.5) had a 73% detachment rate in the derivation cohort and an 86% detachment rate in the validation cohort. Regression modeling revealed the RD-OGI to be highly discriminative, especially 30 days after injury, with an area under the receiver operating characteristic curve of 0.939 in the validation cohort. Survival experience was significantly different depending upon the risk class (P < 0.0001, log-rank chi-square).

CONCLUSIONS

The RD-OGI Score can reliably predict the future risk of developing an RD based on clinical variables that are present at the time of the initial evaluation after OGI.

Successful Management in a Case of Traumatic Retinal Detachment due to Open Globe Injury Using Microincisional Vitrectomy

Background

Retinal detachment (RD) following ocular trauma often results in guarded visual prognosis and sometimes leads to loss of the eye. With the advent of microincisional vitrectomy surgery and the development of surgical techniques, the management of ocular trauma has been transformed.

Case Presentation

A 34-year-old man sustained an open globe injury from fragmented glass at work. He received primary repair and another follow-up surgery 9 days later, including vitrectomy, silicone oil tamponade, and lensectomy for RD and traumatic cataract at another medical center. However, his retina was totally detached and completely curled up in a roll with choroid on display when he was seen by us 1 month later. He was managed with vigilant and patient peeling and unfolding of the retina using a 23-gauge forceps and silicone oil tamponade, and achieved anatomical success and preservation of his eye at 6-month follow-up.

Conclusions

This report demonstrates that even in cases which appear to be hopeless at presentation, the surgeon's perseverance and surgical technique can salvage an eye that may otherwise be phthisical. It also encourages retinal surgeons to use microincisional vitrectomy to manage severe traumatic RD.

Timing and Outcomes of Vitreoretinal Surgery after Traumatic Retinal Detachment

Traumatic retinal detachments are a significant cause of morbidity. There are currently no evidence-based guidelines on the appropriate time to perform vitreoretinal surgery to repair a traumatic retinal detachment. Early intervention, within seven days of the inciting trauma, may decrease proliferative vitreoretinopathy and postoperative endophthalmitis. Later intervention may yield a reduced risk of inflammation and hemorrhage, particularly in cases of concomitant open globe injuries. This article reviews the literature on the management of retinal detachments associated with ocular trauma from the years 2006 to 2016. Particular focus was placed on the timing of surgery, concomitant open globe injury, anatomical success rates, visual acuity, and complication rates. In this review, anatomical success was not significantly related to timing of intervention when compared between early and delayed intervention in eyes with and without concomitant open globe injuries. Visual acuities postoperatively varied widely despite timing of intervention due to the large variation in mechanism and extent of ocular injuries. Proliferative vitreoretinopathy was a common complication. Preliminary data indicate that endophthalmitis rates may be lower when early vitreoretinal surgery is performed. There is insufficient data to conclude whether early or delayed surgery leads to improved outcomes, highlighting the need for further research in this domain.

Visual outcome after emergency surgery for open globe eye injury in Japan

Background

Most patients with open globe eye injury are brought to hospital as emergency patients and usually require admission for emergency surgery. We analyzed the visual outcome in patients with open globe eye injury at our hospital over a 4-year period.

Patients and methods

This study reviewed 40 eyes of 40 patients with open globe eye injury who were presented to Juntendo University Shizuoka Hospital and required emergency surgery during the 4 years from January 2010 to December 2014. Retrospective evaluation of the visual outcome was performed using data from the medical records, including assessment of the influence of sex, side of the eye injury, cause of injury, and site/severity of injury.

Results

The mean age (SD) at the time of the injury was 58.9 years (±25.1 years). There were 28 males (70.0%) and 12 females (30.0%). Statistically significant improvement in visual acuity after treatment was noted in the males (P=0.0015, Wilcoxon test), but not in the females. Twenty-five patients had injury to the right eye (62.5%) and 15 had injury to the left eye (37.5%). A significant improvement in visual acuity was achieved after treatment of injury to the right eye (P=0.021), but not the left eye (P=0.109). The most frequent cause of injury was an accident (15 eyes; 37.5%). The second most frequent cause was work-related injury (14 eyes; 35.0%), which only occurred in males, and the third cause was accident due to negligence (eleven eyes; 27.5%). Two patients developed sympathetic ophthalmia and one patient developed postoperative endophthalmitis.

Conclusion

The majority of patients with open globe eye injury were male workers in Japan. The visual outcome of work-related injury was better than that of injury due to other causes. The visual outcome was also better if the right eye was injured compared with the left eye. Patients with injuries due to negligence were older than the other groups, and this finding might be characteristic of an aging society.

Remarkable visual recovery after severe open globe injury

Purpose

To describe a case of remarkable visual recovery after severe open globe injury.

Observations

We present a case of a 70-year-old man with an open globe injury with no light perception vision before and after primary repair of his ruptured globe and before secondary vitreoretinal surgery to repair a total retinal detachment with a 360° giant retinal tear and retinal incarceration in a posterior scleral wound who proceeded to recover vision to the 20/60 pinhole to 20/50 level.

Conclusions and importance

Poor presenting acuity is a known risk factor for poor visual outcome after open globe injury. We hypothesize this remarkable visual recovery could be attributable to the presence of a massive choroidal hemorrhage and limited intraocular hemorrhage elsewhere. In rare cases, vision can improve from the no light perception level after secondary vitreoretinal surgery.

Altered regional homogeneity in patients with unilateral acute open-globe injury: a resting-state functional MRI study

OBJECTIVE

To investigate the underlying regional homogeneity (ReHo) brain activity changes in patients with unilateral acute open-globe injury (OGI) and their relationship with their clinical features.

PATIENTS AND METHODS

In total, 18 patients with acute OGI (16 males and two females) and 18 healthy controls (HCs; 16 males and two females) closely matched in age, sex, and education status participated in the study. Each subject underwent a resting-state functional magnetic resonance imaging scan. The ReHo method was used to assess local features of spontaneous brain activity. Receiver-operating characteristic curve was used to distinguish OGIs from HCs. The nonparametric statistical analysis was used to explore the relationship between the observed mean ReHo values of the different brain areas and the behavioral performance.

RESULTS

Compared with HCs, acute OGI patients had significantly increased ReHo values in the right cerebellum posterior lobe/lingual gyrus, left superior temporal gyrus/inferior frontal gyrus, left inferior frontal gyrus, left posterior cingulate cortex/precuneus, and left precentral operculum. However, there was no relationship between the observed mean ReHo values of the different brain areas and the behavioral performance.

CONCLUSION

Acute OGI may cause dysfunction in many brain regions, which may reflect the underlying pathologic mechanisms of acute vision loss in OGI patients.

Traumatic retinal detachment--the difficulty and importance of correct diagnosis

Accurate characterization of a retinal detachment as traumatic is often difficult, but is important because it may instigate a careful search for occult coexistent traumatic pathology, affect the prognosis and the treatment of both eyes, influence insurance coverage benefits and medical-legal determinations, and is essential for epidemiologic studies. We review the epidemiology and pathophysiology of traumatic retinal detachment, common obstacles to correct diagnosis, diagnostic guidelines, and outline categories of traumatic causal relationships. Because there is no generally accepted definition of traumatic retinal detachment, we offer a practical one. Categorization as traumatic should be based on the particular history and physical examination rather than epidemiologic criteria.

Retinal detachment associated with traumatic chorioretinal rupture

Traumatic chorioretinal rupture, also known as sclopetaria, is a full-thickness break of the choroid and retina caused by a high-velocity projectile striking or passing adjacent to, but not penetrating, the globe. Previous reports have emphasized that retinal detachment seldom occurs, and observation alone has been the recommended management strategy. However, the authors present herein a series of consecutive patients with retinal detachment associated with sclopetaria and provide a literature review of the topic. They recommend that patients with traumatic chorioretinal rupture be monitored closely for the development of retinal detachment during the first few weeks after the injury.

Ocular blast injuries in mass-casualty incidents: the marathon bombing in Boston, Massachusetts, and the fertilizer plant explosion in West, Texas

PURPOSE

To report the ocular injuries sustained by survivors of the April 15, 2013, Boston Marathon bombing and the April 17, 2013, fertilizer plant explosion in West, Texas.

DESIGN

Multicenter, cross-sectional, retrospective, comparative case series.

PARTICIPANTS

Seventy-two eyes of 36 patients treated at 12 institutions were included in the study.

METHODS

Ocular and systemic trauma data were collected from medical records.

MAIN OUTCOME MEASURES

Types and severity of ocular and systemic trauma and associations with mechanisms of injury.

RESULTS

In the Boston cohort, 164 of 264 casualties were transported to level 1 trauma centers, and 22 (13.4%) required ophthalmology consultations. In the West cohort, 218 of 263 total casualties were transported to participating centers, of which 14 (6.4%) required ophthalmology consultations. Boston had significantly shorter mean distances to treating facilities (1.6 miles vs. 53.6 miles; P = 0.004). Overall, rigid eye shields were more likely not to have been provided than to have been provided on the scene (P<0.001). Isolated upper body and facial wounds were more common in West largely because of shattered windows (75.0% vs. 13.6%; P = 0.001), resulting in more open-globe injuries (42.9% vs. 4.5%; P = 0.008). Patients in Boston sustained more lower extremity injuries because of the ground-level bomb. Overall, 27.8% of consultations were called from emergency rooms, whereas the rest occurred afterward. Challenges in logistics and communications were identified.

CONCLUSIONS

Ocular injuries are common and potentially blinding in mass-casualty incidents. Systemic and ocular polytrauma is the rule in terrorism, whereas isolated ocular injuries are more common in other calamities. Key lessons learned included educating the public to stay away from windows during disasters, promoting use of rigid eye shields by first responders, the importance of reliable communications, deepening the ophthalmology call algorithm, the significance of visual incapacitation resulting from loss of spectacles, improving the rate of early detection of ocular injuries in emergency departments, and integrating ophthalmology services into trauma teams as well as maintaining a voice in hospital-wide and community-based disaster planning.