For example, the type of contact lenses and lens treatments have expanded and improved in recent years. Additionally, new procedures like the use of lasers to correct vision and diseases, such as glaucoma, have provided better options for patients who need them. Optometrists are often the health care providers who consult with patients about new technologies and treatments like these.
Just did LASIK a couple of days ago with Dr. Wapner at Advanced Eye Care. The pre-screening, pre-surgery, surgery, and post-surgery appointments were all very good experiences. Dr. Wapner is extremely qualified, very professional, and is first-class and first-rate. I have nothing but great things to say about him and their facilities.The LASIK worked great. I will definitely be referring all my family and friends to Advanced Eye Care and Dr. Wapner.
In Italy Optometry is unregulated profession. It is taught at seven universities: Padua, Turin, Milan, Salento,[34] Florence, Naples and Rome, as three years course (like a BSc) of "Scienze e tecnologie fisiche" as sector of the Physics Department. Additionally, courses are available at some private institutions (as at Vinci Institute near Firenze) that offer advanced professional education for already qualified opticians (most of the Italian optometrists are also qualified opticians, i.e. "ottico abilitato"). In the last thirty years several verdicts from High Court (Cassazione) proof that optometry is a freely practice and has truly education path.[35]
So far only the illumination at the centre of an image has been considered, but the distribution of illumination over a wide field is often important. In the absence of any lens, the small plane source already considered radiates in a direction inclined at an angle ϕ to the axis with an intensity AB cos ϕ. This light has to travel farther than the axial light to reach a screen, and then it strikes the screen at another angle ϕ. The net result is that the oblique illumination on the screen is smaller than the axial illumination by the factor cos4 ϕ.
It is frequently as important to determine the size of an image as it is to determine its location. To obtain an expression for the magnification—that is, the ratio of the size of an image to the size of the object—the following process may be used: If an object point B lies to one side of the lens axis at a transverse distance h from it, and the image point B′ is at a transverse distance h′, then B, B′, and the centre of curvature of the surface, C, lie on a straight line called the auxiliary axis. Then, by simple proportion,
Since late 1990, Thailand has set goal to provide more than 600 optometrists to meet the minimal public demands and international standards in vision cares. There are more than three university degree programs in Thailand. Each program accept students that have completed grade 12th or the third year in high school (following US education model). These programs offer "Doctor of Optometry" degree to graduates from the program that will take six years to complete the courses. Practicing optometrists will also required to pass licensing examination (three parts examinations) that is administrated through a committee under the Ministry of Public Health.
A doctor's professional affiliations and memberships can help to indicate expertise in certain areas of practice; for example, ophthalmologists may belong to the American Society of Retinal Specialists   or the American Society of Cataract and Refractive Surgeons  . Some organizations have rigorous standards for membership or Fellowship, such as the American Academy of Optometry  .