Many genes from retinoid metabolism cause retinitis pigmentosa. Peropsin, an opsin-like protein with unknown function, is specifically expressed in apical retinal pigment epithelium microvilli. Since rhodopsin and RGR, another opsin-like protein, cause retinitis pigmentosa, we used D-HPLC to screen for the peropsin gene RRH in 331 patients (288 with retinitis pigmentosa and 82 with other retina...

PURPOSE To determine the prevalence of retinitis pigmentosa in the elderly Chinese population. METHODS The Beijing Eye Study is a population-based, cross-sectional cohort study and included 4439 subjects out of 5324 subjects invited to participate (response rate 83.4%) with an age of 40+ years. Readable fundus photographs were available for 4027 (90.7%) subjects. Diagnostic criteria for retin...

A retrospective study of the histopathological features of retinitis pigmentosa was undertaken. A consistent finding in 10 out of 10 eyes from 6 patients with retinitis pigmentosa was the presence of a preretinal membrane. The frequency of this finding has not been noted previously. Preretinal gliosis may well be responsible for the production of the abnormal glinting fundus reflex seen at the ...

THE clinical picture of a congenital vitreous cyst is highly exceptional. Cassady (1939) collected eighteen cases from the world literature. Unilateral retinitis pigmentosa is an equally infrequent disorder, of which Gordon (1949) was able to gather nineteen pure cases. Chance may play a very particular part, witness the fact that McLean (1933) was able to demonstrate one patient with unilatera...

A retrospective study of the histopathological features of retinitis pigmentosa was undertaken. A consistent finding in 10 out of 10 eyes from 6 patients with retinitis pigmentosa was the presence of a preretinal membrane. The frequency of this finding has not been noted previously. Preretinal gliosis may well be responsible for the production of the abnormal glinting fundus reflex seen at the ...

Background : Retinitis pigmentosa is an inherited heterogeneous group of retinal disorders represented by rod photoreceptors progressive dysfunction with subsequent cone degeneration and the pigment epithelium. The typical manifestations are loss visual field night blindness. Purpose purpose this study was to examine Amsler Grid on right left eyes, no scotomas metamorphopsia were found. Method ...

purpose: to report treatment with intravitreal triamcinolone acetonide (ivta) in a patient with cystoid macular edema (cme) secondary to retinitis pigmentosa (rp). case report: a 22-year-old male patient with rp presented with progressive visual loss. visual acuity was 9/10 in the right eye and 10/10 in the left eye without refractive error. examination revealed cme in the right eye. after fail...

A 34-year-old woman who was revealed to have Usher’s syndrome is reported. She was diagnosed with sensorineural hearing loss necessitating the use of hearing aids at the age of 6 and started to have progressive night vision loss when she was a teenager. Few years later, she developed daytime peripheral vision loss. She had normal intrauterine life with an uncomplicated birth. She denied any diz...

BACKGROUND The purpose of this study was to observe the characteristic findings of spectral-domain optical coherence tomography (SD-OCT) images in the retinas of patients with retinitis pigmentosa and to evaluate their distribution patterns in the early and advanced stages of the disease. METHODS A total of 184 patients (368 eyes) with retinitis pigmentosa were observed using SD-OCT. We studi...