Abstract:Patients with persistent fetal vasculature have variable clinical presentation. There is an association of persistent fetal vasculature with congenital cataract. Severe complications are related to cataract surgery in patients with persistent fetal vasculature, but 83% of the operated eyes improved visual acuity.
“…PFV was the second (10.9%), and PLC was the least (5.4%). Similar to our results, it was reported in prior studies that the incidence of PFV in unilateral cataracts was 11% to 30%, [4][5][6][7][8][13][14][15][16], while bilateral PFV is uncommon with its incidence of 2.4% to 16.7% [14,[17][18][19][20][21]. In line with the literature [11], we also found the combined PFV was much more frequent than the anterior or posterior PFV.…”
Purpose. To observe the clinical characteristics of 3 pathological types of posterior capsule abnormalities (PCAs) in congenital cataracts (CCs) and evaluate the surgical safety in these eyes. Methods. This study involved 239 children (367 eyes) with CC who underwent cataract surgery at the Eye Hospital of Wenzhou Medical University. All surgery videos were collected for detailed reviews. Intraoperative and postoperative complications (within 3 months) were all recorded. Results. The 3 pathological types of PCAs, namely, persistent fetal vasculature (PFV), posterior capsule defect (PCD), and posterior lenticonus (PLC), presented in 129 (35.1%) CC eyes, while 238 (64.9%) eyes were recorded as CC without PCA. The percentages of PFV, PCD, and PLC were 10.9%, 26.7%, and 5.4% in CC eyes (n = 367), respectively. The most common concomitant of PFV eyes was PCD (42.5%), and PFV was the most frequent (17.3%) one in PCD eyes. PLC was only associated with PFV (15%) and PCD (50%). The occurrence rates of surgical complications ranged from 0 to 5.4%, and no statistical difference was found between the eyes with and without PCA (all P>0.05). Conclusions. PFV, PCD, and PLC play a very important role in the CCs. The effect of fetal vessels in PFV eyes might be an abnormally strong attachment on the posterior capsule, leading to PLC and PCD. Even in PCA patients, severe surgical complication can also be avoided with well-designed and skilled operation. This trial is registered with NCT03905044 at http://ClinicalTrials.gov.
“…PFV was the second (10.9%), and PLC was the least (5.4%). Similar to our results, it was reported in prior studies that the incidence of PFV in unilateral cataracts was 11% to 30%, [4][5][6][7][8][13][14][15][16], while bilateral PFV is uncommon with its incidence of 2.4% to 16.7% [14,[17][18][19][20][21]. In line with the literature [11], we also found the combined PFV was much more frequent than the anterior or posterior PFV.…”
Purpose. To observe the clinical characteristics of 3 pathological types of posterior capsule abnormalities (PCAs) in congenital cataracts (CCs) and evaluate the surgical safety in these eyes. Methods. This study involved 239 children (367 eyes) with CC who underwent cataract surgery at the Eye Hospital of Wenzhou Medical University. All surgery videos were collected for detailed reviews. Intraoperative and postoperative complications (within 3 months) were all recorded. Results. The 3 pathological types of PCAs, namely, persistent fetal vasculature (PFV), posterior capsule defect (PCD), and posterior lenticonus (PLC), presented in 129 (35.1%) CC eyes, while 238 (64.9%) eyes were recorded as CC without PCA. The percentages of PFV, PCD, and PLC were 10.9%, 26.7%, and 5.4% in CC eyes (n = 367), respectively. The most common concomitant of PFV eyes was PCD (42.5%), and PFV was the most frequent (17.3%) one in PCD eyes. PLC was only associated with PFV (15%) and PCD (50%). The occurrence rates of surgical complications ranged from 0 to 5.4%, and no statistical difference was found between the eyes with and without PCA (all P>0.05). Conclusions. PFV, PCD, and PLC play a very important role in the CCs. The effect of fetal vessels in PFV eyes might be an abnormally strong attachment on the posterior capsule, leading to PLC and PCD. Even in PCA patients, severe surgical complication can also be avoided with well-designed and skilled operation. This trial is registered with NCT03905044 at http://ClinicalTrials.gov.
“…Trata-se de técnica indispensável ao pré-operatório da facectomia (Corrêa et al 2002, Lupinacci et al 2004, Williams 2004, Bhatt et al 2008, Junior 2008) pois, pela avaliação da lente, obtêm-se valores de sua topografia, apresentação morfológica (Williams 2004), sendo possível identificar lesões no polo posterior do bulbo ocular como a persistência da túnica vascular (Tartarella et al 2013) e descolamentos de retina secundários à catarata (Lucena et al 2009, Gomes et al 2013, aspectos estes relevantes à programação e escolha do método cirúrgico . O ultrassom pode auxiliar na condução de procedimentos de caráter invasivo, como a citologia aspirativa e o bloqueio retrobulbar (Kubal 2008, Luyet et al 2008.…”
Pesq. Vet. Bras. 34(2):192-198, fevereiro 2014 192 RESUMO.-O exame ultrassonográfico ocular é indispensá-vel no pré-operatório de procedimentos cirúrgicos intraoculares como a facectomia, além de ser uma ferramenta complementar ao exame oftalmológico, em casos de perda da transparência dos meios ópticos. A inexistência de estudos acerca de padrões de normalidades para as medidas do bulbo ocular e de suas estruturas internas nos gatos, cujos valores possibilitam o monitoramento de enfermidades e auxiliam em procedimentos cirúrgicos motivaram este estudo. Utilizaram-se 40 gatos, adultos, machos e fêmeas, livres de enfermidades sistêmica e oftalmológica. Destes, 22 eram da raça persa (grupo braquicefálico -GB) e 18 sem raça definida (grupo não braquicefálico -GNB). A biometria ultrassonográfica ocular transcorneana foi realizada, em modo-B∕A, com o transdutor microlinear de 9 MHz e as medidas D1 (profundidade da câmara anterior), D2 (diâ-metro do cristalino), D3 (profundidade da câmara vítrea) e D4 (diâmetro axial do bulbo ocular) aferidas. Ainda, menRelação entre a biometria ultrassonográfica ocular e os parâmetros morfométricos do crânio, idade, peso e gênero em gatos domésticos Ocular ultrasonography is a helpful ophthalmic examination, performed on the absence of transparency in ocular means and frequently requested prior intraocular surgery. Unfortunately, the lack of studies upon ultrasonografic images of the normal feline eye, difficults the evaluation of its biometry and its inner structures in many ophthalmic diseases and also before surgery. The objective of this study was to evaluate the ocular biometry and the morphometric parameters of the cranium of 40 healthy adult cats, including 22 Persian cats (Brachycephalic group -BG) and 18 Mixed-breed cats (Noun brachycephalic group -NBG). B/A-mode ultrasonographic biometry, utilizing a 9 MHz probe, was performed for depth of the anterior chamber (D1), lens axial length (D2), depth of the vitreous chamber (D3) and axial length of the globe (D4). Morphometric parameters of the cranium were obtained for bizygomatic (BZ) and occipital frontal (OF) diameters. Data was collected and statistical analysis, including "t" paired tests, variance and covariance analysis and multiple linear regressions was performed for every obtained measure and also for animal ages, weigh and gender. Statistic relevant values were observed in D4 parameter for female cats of BG. Multiple linear regression indicated some influence of the weigh, age and OF in D1, D2 and D4 of PG; and of BZ in D1, D3 and D4 of NBG. Besides that, it was observed that biometry was also influenced by weigh, age and morphometric parameters of their craniums in both groups.
“…This band represents a fibrous tract that corresponds to embryonic remnants of the primary vitreous, which may contain the hyaloid artery (Fig. 11 ) [ 16 , 20 ]. Fig.…”
Ocular B-mode ultrasonography (US) is an important adjuvant for the clinical assessment of a variety of ocular diseases. When ophthalmoscopy is not possible, mainly due to opacification of the transparent media (e.g., mature cataract or vitreous haemorrhage), US can guide the ophthalmologist in diagnosing disease and choosing treatment. The superficial location and cystic structure of the eye make US ideal for imaging of the eye. Moreover, dynamic study helps distinguish between various conditions that would otherwise be difficult to differentiate in some clinical setting, such as vitreous, retinal, and choroidal detachment. US is also good technique for detecting other pathologic conditions such as lens dislocation, vitreous haemorrhage, asteroid hyalosis, optic disc drusen, and tumors (e.g., choroidal melanoma, metastases, hemangioma). An understanding of the basic anatomy of the eye, the US technique, and common entities that affect the ocular globe will allow radiologists to offer this valuable imaging modality to patients and referring clinicians. This article focuses on the US anatomy and pathologic conditions that affect the posterior ocular segment.Teaching points• US is specially indicated when ocular fundus cannot be assessed on ophthalmoscopy.• Multipurpose equipment with high-frequency transducers is optimal for imaging the eye.• Ultrasound can reliably depict ocular anatomy and pathology as detachments and tumours.• Dynamic examination is vital for distinguishing certain pathologic conditions as detachments.Electronic supplementary materialThe online version of this article (doi:10.1007/s13244-016-0471-z) contains supplementary material, which is available to authorized users.
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