Evaluation of Virtual Reality Perimetry and Standard Automated Perimetry in Normal Children.

Purpose: The Olleyes VisuALL-K is a pediatric videogame-based static threshold perimeter using a virtual reality headset. We determined normal threshold sensitivities for the 24-2 test locations using the virtual reality perimetry (VRP) and also tested patients on the Humphrey Field Analyzer (HFA). Patient satisfaction for the two instruments was compared. Methods: This exploratory study tested 50 normal pediatric participants aged 8 to 17 years on the HFA and VRP. The main outcome measure was threshold sensitivity at the 24-2 test locations for the two instruments. Results: The mean participant age was 13.0 ± 2.6 years; 50% were female. The threshold values for VRP are reported as measured on the device and after conversion to an HFA-equivalent scale. Age-adjusted thresholds showed a mean sensitivity of 31.8 ± 1.1 dB (46.1 ± dB HFA equivalent) diminution from the maximum light intensity in the VRP and 31.0 ± 1.5 dB diminution from the maximum light intensity in the HFA; interparticipant variability in mean threshold sensitivity was 2.7 ± 0.4 dB for the VRP and 2.7 ± 0.6 dB for the HFA. The HFA demonstrated decreased threshold sensitivity with increasing eccentricity, whereas the VRP threshold did not seem to vary with eccentricity. Mild age effects on threshold sensitivity were seen in the VRP and the HFA (R2 = 0.11, P < 0.001 and R2 = 0.05, P < 0.05, respectively). The mean time to completion for VRP and HFA was 7.6 ± 1.5 and 5.3 ± 0.9 min/eye, respectively (P < 0.0001). Patient satisfaction scores favored VRP (P < 0.01) despite the longer test duration. Conclusions: The Olleyes game-based VRP and HFA can be used to map out the peripheral vision in normal children. The VRP has a higher patient satisfaction when used in children than the HFA. The portability of the test allows it to be performed in a myriad of environments, lending a flexibility that can benefit this population. Translational Relevance: This virtual reality perimetry device provides an alternative to the Humphrey Field Analyzer for children.

To sell or not to sell: considerations when evaluating private equity acquisitions.

PURPOSE OF REVIEW: Many private practice ophthalmology groups are considering a partnership with private equity. When evaluating whether to remain independent or to engage an equity partner, practice leaders must analyze their existing practice, address issues of equity transitions, management, and governance, and determine strategic goals. This paper discusses the factors that need to be considered when evaluating the possibility of an acquisition model. SUMMARY: When considering a partnership with private equity, a thriving and mature private practice must conduct an in-depth analysis of four factors: how to transition the equity of a mature practice, how to continue growth, how to manage an increasingly complex organization, and the after-effects of a sale. These same issues must be addressed whether the group decides to pursue private equity or decides to remain independent.

Attitudes and Awareness of Cornea Specialists and Oculoplastic Surgeons toward Methicillin-Resistant Staphylococcus aureus Decolonization.

Background: Methicillin-resistant Staphylococcus aureus (MRSA) decolonization is widely utilized in many medical subspecialities to reduce surgical site infections, but routine ophthalmic implementation has been limited. The aim of this study was to investigate the attitudes and actual practice of corneal specialists and oculoplastic surgeons toward MRSA decolonization as a preventive measure in ophthalmic surgery. Materials and Methods: A web-based survey was sent to cornea specialists and oculoplastic surgeons to assess their knowledge, beliefs, and practices regarding MRSA prophylaxis and the use of MRSA decolonization to prevent post-operative infections. Results: A total of 180 surgeons participated in this study: 71% of respondents agreed that MRSA colonization plays a role in post-operative infection of the eye and adnexal structures; 65% stated that MRSA decolonization could help prevent MRSA infection. Although 41% of respondents would change their management in response to a positive pre-operative MRSA screening result, only 18% performed pre-operative screening. Seventeen percent of respondents indicated that they offer pre-operative decolonization for MRSA-positive patients; the most frequently applied technique was the use of nasal antibiotic agents such as mupirocin, followed by antiseptic baths. Peri-operative MRSA prophylaxis was used by 18% of respondents; pre-operative MRSA decolonization was used in conjunction by 8.5 % of respondents. Conclusions: Although MRSA decolonization has been validated in fields outside of ophthalmology, there has not been widespread adoption of this practice among oculoplastic surgeons and cornea specialists. Prospective MRSA decolonization ophthalmic studies are necessary if evidence-based management guidelines are to be developed.

Thrombophilia in 153 Patients With Premature Cardiovascular Disease ≤Age 45.

We assessed contributions of thrombophilia to premature cardiovascular disease (CVD) events (≤ age 45) in 153 patients. Test results of thrombophilia-hypofibrinolysis were obtained in 153 patients with CVD ≤ age 45, 110 healthy normal controls, and 110 patients who had venous thromboembolism (VTE) without CVD. Of the 153 patients with CVD, 121 (79%) had sustained myocardial infarction, 70 (46%) had coronary artery stenting, and 53 (35%) had coronary artery bypass grafts. The first CVD events occurred at ages >20 to 35 in 47 patients and at ages >35 to 45 in 106 patients. At study entry, median low-density lipoprotein cholesterol was 126 mg/dL, 56 (37%) smoked, 56 (37%) had hypertension, and 56 (37%) were diabetic. Cases differed from normal controls for high factor VIII (10 [22%] of 45 vs 7 of 103 [7%], P = .007), high homocysteine (32 [21%] of 151 vs 5 [5%] of 107, P = .0002), low free protein S (5 [11%] of 44 vs 2 [2%] of 96, P = .032), high anticardiolipin antibodies (ACLA) IgM (11 [9%] of 129 vs 2 [2%] of 109, P = .024), high lipoprotein (a) [Lp(a)] (46 [30%] of 151 vs 21 [19%] of 110, P = .038), and the lupus anticoagulant (4 [11%] of 37 vs 2 [2%] of 110, P = .035). There were no differences ( P > .05) between cases and VTE controls except free protein S and Lp(a). Free protein S was more often low in VTE controls (24 [28%] of 85 vs 5 [11%] of 44, P = .03) and Lp(a) was more often high in cases (46 [30%] of 151, VTE controls 12 [17%] of 71, P = .032). In 153 patients with premature CVD ≤ age 45, thrombophilia was pervasive (high factor VIII, homocysteine, ACLA IgM, low free protein S, high Lp(a), and lupus anticoagulant), evidencing thrombotic contribution to premature CVD. Moreover, thrombophilia in patients with premature CVD was comparable to VTE controls, emphasizing the pervasive nature of thrombophilia in premature CVD.

Primary Care Continuity Improves Diabetic Health Outcomes: From Free Clinics to Federally Qualified Health Centers.

INTRODUCTION: There are a number of well-established barriers to accessing primary care. The LINKED Study set out to improve primary care usage through 1-on-1 counseling and referrals for patients with diabetes being treated at local free clinics. We hypothesized that this educational intervention paired with expedited referral would increase the use of federally qualified health centers (FQHCs) as a source of health care and ultimately lead to improved diabetic health. METHODS: Medical student volunteers counseled participants on the importance of primary care. The participants then completed surveys about diabetic health, socioeconomic status, and general demographics. Participants were subsequently assigned to 1 of 2 FQHCs; designated care coordinators facilitated appointments. At the end of a 9-month action period, participants repeated the initial surveys, now including appointment history and health data (hemoglobin A1c (%) [HbA1c], body mass index). RESULTS: Sixty-eight participants were enrolled. The average time since a diagnosis of diabetes mellitus was 8.3 years (standard deviation [SD], 8.4 years), and 25% of participants used insulin. Mean baseline HbA1c for participants with a recorded value (n = 55) was 9.5 (SD, 2.5). FQHC appointments were scheduled by 68% of participants; 38% of the participants attended ≥2 appointments. The most common reported barriers to accessing primary care were no prior health insurance (85.3%) and cost of medical care (72.1%). In our follow-up assessment there was a statistically significant decrease in HbA1c for those linked to FQHCs (9.5 [SD, 2.3] to 8.3 [SD, 2.2]; n = 21). CONCLUSIONS: This study demonstrates the utility of a linkage program from free clinics to FQHCs. Those individuals with diabetes receiving health care from an FQHC demonstrated improved glycemic control.

BMP signaling modulates hedgehog-induced secondary heart field proliferation.

Sonic hedgehog signaling in the secondary heart field has a clear role in cardiac arterial pole development. In the absence of hedgehog signaling, proliferation is reduced in secondary heart field progenitors, and embryos predominantly develop pulmonary atresia. While it is expected that proliferation in the secondary heart field would be increased with elevated hedgehog signaling, this idea has never been tested. We hypothesized that up-regulating hedgehog signaling would increase secondary heart field proliferation, which would lead to arterial pole defects. In culture, secondary heart field explants proliferated up to 6-fold more in response to the hedgehog signaling agonist SAG, while myocardial differentiation and migration were unaffected. Treatment of chick embryos with SAG at HH14, just before the peak in secondary heart field proliferation, resulted unexpectedly in stenosis of both the aortic and pulmonary outlets. We examined proliferation in the secondary heart field and found that SAG-treated embryos exhibited a much milder increase in proliferation than was indicated by the in vitro experiments. To determine the source of other signaling factors that could modulate increased hedgehog signaling, we co-cultured secondary heart field explants with isolated pharyngeal endoderm or outflow tract and found that outflow tract co-cultures prevented SAG-induced proliferation. BMP2 is made and secreted by the outflow tract myocardium. To determine whether BMP signaling could prevent SAG-induced proliferation, we treated explants with SAG and BMP2 and found that BMP2 inhibited SAG-induced proliferation. In vivo, SAG-treated embryos showed up-regulated BMP2 expression and signaling. Together, these results indicate that BMP signaling from the outflow tract modulates hedgehog-induced proliferation in the secondary heart field.