Mexico's parliament has modified Article 79 of its Health Act to include optometry in the list of health professions that requires a university degree to practice. The amendment will apply to new graduates. Visual impairment is the second most frequently occurring disability in the country, according to the Mexican Institute of Geography and Statistics. An estimated 43 percent of Mexican population needs optometric services and it would take around 12,000 optometrists to satisfy the demand for eye care. As of February 2014, there were about 4,000 optometrists in the country holding a university degree. Currently, 15 universities in Mexico offer an optometry degree, and graduate an average of 400 optometrists each year, according to the World Council of Optometry (WCO).