Latinos have higher rates of developing visual impairment, blindness, diabetic eye disease, and cataracts than non-Hispanic whites, researchers found. These are the first estimates of visual impairment and eye disease development in Latinos, the largest and fastest growing minority population in the United States.
The research was part of the Los Angeles Latino Eye Study (LALES), which was supported by the National Eye Institute (NEI), part of the National Institutes of Health. LALES began in 2000 as the nation's largest and most comprehensive study of vision in Latinos.
"This study showed that Latinos develop certain vision conditions at different rates than other ethnic groups," said Rohit Varma, M.D., M.P.H., principal investigator of LALES and director of the Ocular Epidemiology Center at the Doheny Eye Institute, University of Southern California. "The burden of vision loss and eye disease on the Latino community is increasing as the population ages, and many eye diseases are becoming more common."
Hispanics numbered 45 million in the United States as of 2007, according to the Census Bureau. In the current phase of LALES, researchers examined more than 4,600 Latinos four years after they initially enrolled in the study to determine the development of new eye disease and the progression of existing conditions, including visual impairment, blindness, diabetic eye disease, age-related macular degeneration, and cataracts.
Participants were mainly of Mexican descent, age 40 and older, and living in the city of La Puente, Los Angeles County, Calif. Study results were published in four papers in the May issue of the American Journal of Ophthalmology.
"These data have significant public health implications and present a challenge for eye care providers to develop programs to address the burden of eye disease in Latinos," said NEI Director Paul A. Sieving, M.D., Ph.D. "NEI has a strong record of commitment to educating the Latino community and health care providers about eye diseases through its National Eye Health Education Program, and will continue to make this a priority."
LALES researchers found that over the four-year interval, Latinos developed visual impairment and blindness at the highest rate of any ethnic group in the country, when compared with estimates from other U.S. population-based studies. Overall, nearly 3 percent of Latinos developed visual impairment and 0.3 percent developed blindness in both eyes, with older adults impacted more frequently. Of Latinos age 80 and older, 19.4 percent became visually impaired, and 3.8 percent became blind in both eyes.
U.S. Latinos were also more likely to develop diabetic retinopathy than non-Hispanic whites. Over the four-year period, 34 percent of Latinos who had diabetes developed diabetic retinopathy, with Latinos aged 40 to 59 having the highest rate. Though increasing age did not play a role, Latinos with a longer duration of diabetes were more likely to develop the disease. In fact, 42 percent of Latinos with diabetes for more than 15 years developed diabetic retinopathy. Also, among participants who had diabetic retinopathy at the beginning of the study, 39 percent showed worsening of the disease four years later.
Researchers found that Latinos who already had visual impairment, blindness, or diabetic retinopathy in one eye when they began the study had very high rates of developing the condition in the other eye during the study. More than half of participants who already had diabetic retinopathy in one eye developed it in the other eye.
"These results underscore the importance of Latinos, especially those with diabetes, getting regular, dilated eye exams to monitor their eye health," Varma said. "Eye care professionals should closely monitor Latinos who have eye disease in one eye because their quality of life can be dramatically impacted if they develop the condition in both eyes."
In addition, LALES showed that Latinos were more likely to develop cataracts in the center of the lens (10.2 percent) than the edge of the lens (7.5 percent). Many of these lens changes were age-related, as 50 percent of Latinos age 70 and older developed cataracts in the center of the lens.
However, Latinos in the study had low rates of early and late age-related macular degeneration (AMD) development. Less than 8 percent developed early AMD and less than 1 percent developed late AMD, though the chance of developing AMD did increase with age. Compared with other population-based studies, Latinos in LALES were half as likely to develop early AMD and one-third as likely to develop late AMD as non-Hispanic whites.
Previous results from LALES showed that more than 60 percent of eye disease in Latinos is undiagnosed and undetected—specifically, 98 percent of AMD, 95 percent of diabetic retinopathy, 82 percent of glaucoma, 57 percent of cataracts, and 19 percent of refractive error. LALES researchers are currently investigating the risk factors for eye disease development in Latinos, and will examine specific genetic risk factors for diabetic retinopathy and AMD.
For information about the National Eye Health Education Program's ¡Ojo con su Vision! (Watch out for your Vision) program, which provides culturally appropriate vision health information for Latinos, visit http://www.nei.nih.gov/nehep/programs/ojo/index.asp.
The National Eye Institute, part of the National Institutes of Health, leads the federal government's research on the visual system and eye diseases. NEI supports basic and clinical science programs that result in the development of sight-saving treatments. For more information, visit www.nei.nih.gov.
The National Institutes of Health (NIH) — The Nation's Medical Research Agency — includes 27 Institutes and Centers and is a component of the U.S. Department of Health and Human Services. It is the primary federal agency for conducting and supporting basic, clinical, and translational medical research, and it investigates the causes, treatments, and cures for both common and rare diseases. For more information about NIH and its programs, visit www.nih.gov.
National Eye Institute | EurekAlert!
Antarctic Ice Sheet mass loss has increased
14.06.2018 | Technische Universität Dresden
WAKE-UP provides new treatment option for stroke patients | International study led by UKE
17.05.2018 | Universitätsklinikum Hamburg-Eppendorf
In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.
Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...
Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
13.06.2018 | Event News
08.06.2018 | Event News
05.06.2018 | Event News
21.06.2018 | Earth Sciences
21.06.2018 | Life Sciences
21.06.2018 | Earth Sciences