Faculty Bibliography

More than a quarter century has passed since the original description of polypoidal choroidal vasculopathy (PCV) in 1982 as a peculiar hemorrhagic disorder involving the macula characterized by recurrent subretinal pigment epithelial bleeding. In the ensuing years, numerous reports have described the expanded clinical spectrum of this entity. PCV is the principal vascular composition of patients of pigmented races experiencing neovascular maculopathies, particularly African Americans and Asians. This form of neovascularization is now known to occur in white patients with or without concomitant drusen, and the site of involvement has extended from the peripapillary area to the peripheral fundus. Indocyanine green angiography has made detection of these abnormal vascular changes more reliable and definitive. More precise diagnosis has also led to a better understanding of specific clinical features that distinguish PCV from more typical proliferations of abnormal choroidal vessels. We review the nature of PCV, including its genetic basis, demographic features, histopathology, clinical manifestations, natural course, response to treatments, and the histopathological and genetic bases. We emphasize multimodal ophthalmic imaging of these vessels, in particular fluorescein and indocyanine green angiography and optical coherence tomography

PURPOSE: The purpose of the study was to analyze long-term outcomes for the treatment of type 1 (subretinal pigment epithelium) neovascularization using a modified 'treat and extend' antivascular endothelial growth factor dosing regimen. METHODS: We performed a retrospective, noncomparative analysis of visual acuity, funduscopic, and optical coherence tomography data for 18 eyes of 16 consecutive patients with newly diagnosed type 1 neovascularization treated with intravitreal bevaci-zumab and/or ranibizumab with at least 24-month follow-up. Three monthly injections were followed by continued treatment at intervals increasing by 2 weeks per visit to a maximum of 10 weeks. The interval was shortened if clinical or optical coherence tomography evidence of recurrent fluid at the foveola or increased extrafoveolar fluid was detected. RESULTS: Median baseline logarithm of the minimum angle of resolution visual acuity was 0.53 (20/69 Snellen equivalent) and remained stable at 24 months (logarithm of the minimum angle of resolution 0.52, P = 0.84) after an average of 12 injections (range, 8-19 injections) and at 36 months (logarithm of the minimum angle of resolution 0.52, P = 0.68) after an average of 20 injections (range, 18-25 injections). Although most eyes (15 of 18 [83%]) continued to manifest extrafoveolar subretinal fluid throughout the course of treatment, only 1 eye developed geographic atrophy overlying the areas of choroidal neovascularization. During a cumulative observation period of 540 months, no eyes developed a sight-threatening submacular hemorrhage. CONCLUSION: A modified 'treat and extend' dosing regimen of intravitreal antivascular endothelial growth factor therapy reduces the need for monthly visits and imaging and allows for stable long-term visual acuity in eyes with type 1 neovascularization

PURPOSE: To investigate the antibiotic susceptibility and clinical outcomes of endophthalmitis caused by methicillin-sensitive Staphylococcus aureus (MSSA) versus methicillin-resistant (MRSA) S. aureus. DESIGN: Retrospective, consecutive case series. METHODS: Charts of 32 patients with culture-proven S. aureus endophthalmitis seen at the Bascom Palmer Eye Institute from January 1, 1995, through January 1, 2008, were reviewed. Antibiotic susceptibility profiles, identified using standard microbiologic protocols, and visual acuity at 1 and 3 months were the main outcome measures. RESULTS: MSSA was recovered from 19 (59%) of 32 patients and MRSA was recovered from 13 (41%) of 32 patients. Causes included cataract surgery in 18 (56%) of 32 patients, endogenous in 5 (16%) of 32 patients, bleb association in 4 (13%) of 32 patients, pars plana vitrectomy and ganciclovir implantation in 3 (9%) of 32 patients, and trauma in 2 (6%) of 32 patients. All isolates were sensitive to vancomycin. MSSA isolates were sensitive to all tested antibiotics, except one that exhibited fluoroquinolone resistance. In the MRSA group, frequent resistance occurred with the fourth-generation fluoroquinolones (moxifloxacin, 5 of 13 patients [38%]; gatifloxacin, 5 of 13 patients [38%]). The median presenting visual acuity was approximately hand movements for both MSSA and MRSA eyes. All eyes received intravitreal antibiotics. Pars plana vitrectomy was performed on 47% of MSSA and 61% of MRSA patients. A final visual acuity of 20/400 or better at 3 months was achieved in 59% of MSSA and 36% of MRSA patients (P = .5). CONCLUSIONS: Although all MSSA and MRSA isolates were sensitive to vancomycin, fewer than half of MRSA isolates were sensitive to the fourth-generation fluoroquinolones. Visual acuity outcomes between MRSA and MSSA eyes were not significantly different.

Diffuse unilateral subacute neuroretinitis (DUSN) secondary to raccoon roundworm (Baylisascaris procyonis) infection has been reported in rural and suburban areas of North America and Europe with extant raccoon populations. Here, we present a case of Baylisascaris-induced DUSN from the densely populated borough of Brooklyn in New York City and alert urban ophthalmologists to consider this etiology even in areas not typically thought to be associated with endemic risk factors. Infected raccoons also occur in urban settings, and urban patients may be exposed in surrounding areas. Most patients with Baylisascaris ocular larva migrans-DUSN will not have concomitant neurologic disease; this fact and larval neurotropism are both misconceptions regarding this infection.

OBJECTIVE: To describe tubular structures found in the outer retina seen in a variety of retinal disorders. METHODS: Sixty-nine eyes of 63 patients were examined with spectral-domain optical coherence tomography. Optical coherence tomography C-scans were correlated with their corresponding B-scans. The prevalence, number, size, and shape of the tubular structures were determined. RESULTS: Branching tubules were identified in the outer retina of 54 patients with age-related macular degeneration and in 9 patients with other diagnoses. The tubules appeared as round or ovoid hyporeflective spaces with hyperreflective borders on the B-scans, measuring 40 to 140 microm high and 40 to 2260 microm wide. Morphologic features ranged from single straight or branching tubules to complex cavitary networks, usually overlying areas of pigment epithelial alteration or subretinal fibrosis. The tubules generally remained stable over time. In a retinal practice specializing in advanced age-related macular degeneration, these structures were identified in 60 of 248 patients (24.2%) seen during a 3-month period. CONCLUSIONS: Degenerating photoreceptors may become arranged in a circular or ovoid fashion during a process we propose to term outer retinal tubulation. These changes are apparently common in advanced diseases affecting the outer retina and retinal pigment epithelium. This observation has practical implications because these findings can be misinterpreted as intraretinal or subretinal fluid, possibly prompting unnecessary interventions

PURPOSE: The purpose of this study was to assess the efficacy of topical bromfenac (0.09%) as an adjunctive therapy for patients with neovascular age-related macular degeneration demonstrating persistent exudation despite monthly intravitreal antivascular endothelial growth factor therapy. METHODS: Twenty-one patients (22 eyes) who manifested persistent subretinal and/or intraretinal fluid after at least 3 monthly intravitreal injections of ranibizumab or bevacizumab were prescribed topical bromfenac (0.09%) ophthalmic solution twice daily for 2 months. The efficacy of topical bromfenac was evaluated by comparing visual acuity (logarithm of the minimal angle of resolution and Snellen equivalent), masked readings of spectral domain optical coherence tomography center-point retinal thickness, and the height of pigment epithelial detachment (when present) at baseline and at 1 month and 2 months after the initiation of combined treatment. RESULTS: The mean visual acuity logarithm of the minimal angle of resolution (Snellen equivalent) at baseline was 0.55 +/- 0.35 (20/70), and it did not change significantly after 1 month (0.53 +/- 0.35; P = 0.41, paired Student's t-test) or 2 months (0.52 +/- 0.34; P = 0.26) after the initiation of combined treatment. The mean central retinal thickness was 311 microm at baseline, 308 microm (P = 0.73, paired Student's t-test) after 1 month, and 299 microm (P = 0.34) after 2 months. In 20 eyes of 19 patients manifesting a pigment epithelial detachment, the mean pigment epithelial detachment height was 275 microm at baseline, 271 microm (P = 0.33, paired Student's t-test) at 1 month, and 274 microm (P = 0.76) at 2 months. There were no adverse events associated with the extended administration of topical bromfenac. CONCLUSION: In patients with neovascular age-related macular degeneration manifesting persistent exudation despite monthly intravitreal antivascular endothelial growth factor therapy, we could not detect a beneficial effect of adding topical bromfenac (0.09%) twice daily over 2 months

PURPOSE: The purpose of this study was to analyze long-term outcomes for the treatment of type 3 neovascularization/retinal angiomatous proliferation using a 'Treat and Extend' dosing regimen for antivascular endothelial growth factor therapy. METHODS: This was a retrospective analysis of visual acuity and optical coherence tomography data of 11 eyes of 10 consecutive patients with newly diagnosed type 3 neovascularization/retinal angiomatous proliferation treated with intravitreal bevacizumab and/or ranibizumab with at least a 12-month follow-up. Three monthly injections were followed by continued treatment at intervals increasing by 2 weeks per visit, to a maximum of 10 weeks, unless clinical or optical coherence tomography evidence of persistent or recurrent fluid was present, in which case, the interval was shortened. RESULTS: Mean baseline Snellen visual acuity was 20/80, improved to 20/40 at 1 month, and was maintained throughout the 36-month period (n = 11 at 12 months, n = 10 at 24 months, and n = 8 at 36 months) (P < 0.04, paired t-test). The mean center point optical coherence tomography thickness decreased from 320 microm to 180-230 microm, and was maintained during the study period (P < 0.02). The mean number of injections was seven in the first year, six in the second year, and seven in the third year. CONCLUSION: 'Treat and Extend' antivascular endothelial growth factor dosing in type 3 neovascularization/retinal angiomatous proliferation delivers promising outcomes at a reduced burden for the patient and health care system compared with monthly and optical coherence tomography-guided dosing regimens

PURPOSE: To explore the incidence of complications after bilateral same-day intravitreal injections of antivascular endothelial growth factor pharmacotherapies in this retrospective interventional case series. METHODS: An electronic review of billing records was performed to identify all bilateral same-day intravitreal antivascular endothelial growth factor injections performed within a single group retina practice between January 6, 2006 and June 1, 2009. The charts were reviewed to identify the complications of endophthalmitis, intraocular inflammation, retinal tear, and retinal detachment. RESULTS: A total of 1,534 bilateral intravitreal injections (326 bevacizumab and 1,208 ranibizumab: 3,068 injections total) were performed in 367 patients. Three complications were identified. Two cases of unilateral culture-proven endophthalmitis occurred after bilateral intravitreal ranibizumab, and one case of unilateral acute intraocular inflammation occurred after bilateral intravitreal bevacizumab. In all three of these eyes, visual acuity returned to its preinjection level. No cases of retinal tear or retinal detachment were identified. The incidence of culture-proven endophthalmitis was 0.065%, and the incidence of acute intraocular inflammation was 0.033%. CONCLUSION: The complication rates after bilateral same-day intravitreal antivascular endothelial growth factor injections seem to be similar to those after unilateral injections. Severe acute intraocular inflammation can occur unilaterally after same-day bilateral injections of bevacizumab