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Frans_Jozef
Saturday, January 8th, 2005, 02:54 PM
Racial Differences in Eye Damage

Hypertensive retinopathy, a type of blood vessel damage in the eye due to high blood pressure, is twice as common in African Americans as in whites, according to research published in the May 2003 issue of Hypertension. The research team was led by Dr. Tien Yin Wong, M.D., Ph.D., from the National University of Singapore.

This study was the first to examine the prevalence of hypertensive retinopathy in African Americans that was based on patient groups representative of the general population.

Dr. Wong says these findings have important public health implications because the higher frequency of this condition in African Americans may explain why they are at higher risk of stroke.

In this study, doctors examined 1,860 African Americans and 7,874 whites, age 49 to 73, all non-diabetic and living in the United States. Results showed that African Americans had higher blood pressure, a higher incidence of left ventricular atrophy (a thickened heart muscle caused by high blood pressure) and were twice as likely as whites to have hypertensive retinopathy. Researchers found that the differences in blood pressure explained most of the higher prevalence of retinopathy in African Americans.

The authors conclude that the excess prevalence of retinopathy in African Americans is associated with blood pressure and severity of hypertension. Thus, they point out, controlling hypertension in African-Americans is probably one method to reduce this higher prevalence.





http://www.visionconnection.org/Content/Research/News/RacialDifferencesinEyeDamage.htm

Frans_Jozef
Saturday, January 8th, 2005, 02:56 PM
Vision Impairment: Racial & Ethnic Differences



Based on findings from The Lighthouse National Survey on Vision Loss (The Lighthouse Inc., 1995), among persons age 45 and older, those who report some form of vision problem are more likely to be non-Caucasian (23%) in comparison to those who report no vision impairment (17%).
African-Americans have a higher rate of legal blindness than Caucasians, but much of this difference may be due to poor access to appropriate eye care services (Prevent Blindness America, 1994, p.3).
The Baltimore Eye Survey found that the overall age-adjusted rates of visual impairment among African-Americans was twice that of whites (Tielsch, Sommer, Witt, Katz, & Royall, 1990).
Data from the 1991-92 Survey of Income and Program Participation indicate that a higher proportion of African-Americans have visual impairments than do Caucasians. Although African-Americans comprise 12% of the U.S. population, among persons with visual impairments 18% are African-Americans and among those with a severe visual impairment 21% are African-Americans (Schmeidler & Halfmann, 1998a, p.539).
The Los Angeles Latino Eye Study (LALES) found that the rates of vision impairment in Latinos are higher than those reported in Whites and comparable to those reported in Blacks (National Eye Institute, 2004).
Glaucoma



The overall prevalence of open-angle glaucoma among Latinos in the Los Angeles Latino Eye Study (LALES) was nearly five percent. This is higher than the rate reported for Whites and similar to that for Blacks in this country (National Eye Institute, 2004).
Based on findings from the Baltimore Eye Survey, the prevalence of blindness due to glaucoma is 4 to 6 times higher among African-Americans than Caucasians (Tielsch, Sommer, Witt, Katz, & Royall, 1990).
Almost 4% of African-Americans (409,643) (age 40 and over) are reported to have glaucoma as compared to about 1.7% of Caucasians (1.6 million) and 1.5% of Hispanics (131,654) (Prevent Blindness America, 2002).
Research on a population-based sample found that glaucoma is the leading cause of blindness among Hispanics (Rodriguez, 2002).
Diabetic Retinopathy



The Los Angeles Latino Eye Study (LALES) found that almost one-half of all study participants with diabetes-almost a quarter of the LALES population-had some signs of diabetic retinopathy. Latinos had a higher rate of more severe vision-threatening diabetic retinopathy than Whites (National Eye Institute, 2004).
According to Prevent Blindness America (2002), before age 40, diabetic retinopathy affects Caucasians more frequently than other races, however Hispanics are the most commonly affected in later decades.
African-Americans are twice as likely to suffer from diabetic-related legal blindness (American Diabetes Association).
The prevalence of diabetic retinopathy in Mexican-Americans is 32-40% (American Diabetes Association).
Macular Degeneration



The Los Angeles Latino Eye Study (LALES) found that while Latinos had the early signs of AMD at rates comparable to Whites, the rates of advanced AMD were lower than seen in Whites and comparable to Blacks (National Eye Institute, 2004).
Age-specific prevalence rates of age-related macular degeneration are initially comparable between races, however advance more significantly for Caucasians after age 75 (Prevent Blindness America, 2002, p.18).




http://www.visionconnection.org/Content/Research/EpidemiologyandStatistics/Statistics/VisionImpairmentRacialandEthnicDifferenc es/default.htm

Appalachian
Saturday, January 8th, 2005, 05:37 PM
The research team was led by Dr. Tien Yin Wong, M.D., Ph.D., from the National University of Singapore.

Heresy! Don't these Singaporeans realize that race doesn't exist!?!? :|

Frans_Jozef
Saturday, January 8th, 2005, 06:49 PM
Heresy! Don't these Singaporeans realize that race doesn't exist!?!? :|
Well, in their own country foreigners are more terrible racists than your average nutzi, however they like to be in a minority position in America and Europe to capitalize on our humanitarian and knightly nature, talk into us a false engram of culpability where none is and against our principles where we deny the incrimination of the children for the sins of the fathers or the forebearers, and finally dissent any natural form of hierarchy and distinction as long it serves their social upgrade and brings material advantages to their kin.

Jews, Muslims, Chinese...and other people, they are all the same and always unreliable allies for particular causes.

SudVolk
Saturday, January 8th, 2005, 06:55 PM
Blacks who live in the developing world tend to suffer more from high blood-pressure than white Europeans, so it is no suprise that they suffer from secondary blood-pressure related conditions. Asians too in the UK seem to suffer more frequently from high blood-pressure and diabetes than whites. My assumption is that they are not used to the carbohydrate-rich diet that is prevalent in the West, especially sugar.

morfrain_encilgar
Saturday, January 8th, 2005, 07:17 PM
Well, in their own country foreigners are more terrible racists than your average nutzi, however they like to be in a minority position in America and Europe to capitalize on our humanitarian and knightly nature, talk into us a false engram of culpability where none is and against our principles where we deny the incrimination of the children for the sins of the fathers or the forebearers, and finally dissent any natural form of hierarchy and distinction as long it serves their social upgrade and brings material advantages to their kin.

Jews, Muslims, Chinese...and other people, they are all the same and always unreliable allies for particular causes.

I agree.

Appalachian
Saturday, January 8th, 2005, 08:38 PM
Yeah, that pretty much sums it up.