Regular check ups for your vision should be required for each person. Ideally, the diagnosis of visual impairment should be held once a year in order to have time to detect any disease at an early stage of its development.
Diagnosis of impairment involves the analysis of the ability of the human eye to clearly see objects at distance and nearby, as well as an assessment of the field of vision and ability to distinguish colors.
As a rule, for the diagnosis of visual impairment, special tables are shown to the person, which consist of a set of numbers, letters, or other symbols of different sizes. The table can be fixed to a wall or displayed on it using a projector. The patient must determine what is shown by stating the letters, symbols, and numbers they see.First, a check of visual acuity in each eye is done when the patient is asked to cover one eye by hand, and uses their second eye try to consider the characters. Then visual acuity in both eyes is checked when the patient uses both eyes.
If the result of the diagnosis of visual impairment shows reduced vision, Dr. William Boothe establishes the causes of visual impairment. He may also suggest refraction analysis of the patient.
The study of human refractive error is to identify the intensity of the optical means for correcting vision, which are necessary to the patient in order to see normally.Errors in the study of refraction can occur when light rays are not focused on the center of the retina, but a little after it or before it. Diagnosis of visual impairment should involve the study of refraction if the person wears glasses or contact lenses.
Diagnosis of visual impairment, which defines the characteristics of the field of view, consists of estimation of peripheral vision, which is the field of vision that people can see when the eye is at a particular direction. Accordingly, the objects in the center of the field of view are seen more clearly, but in the peripherals, what the person sees is blurry and fuzzy.
How often should you undergo the process of diagnosis of visual impairment?
Check ups should be regular. If a person has not observed any violations of the visual function, the diagnosis of visual impairment should be conducted on a specific schedule:
- Almost immediately after birth;
- Semi-annually as a child;
- After a child’s 3rdbirthday;
- Before entering school, and every year after that;
- Every two years between the ages of twenty and sixty-five years;
- Annually after sixty-five years.
If you want to get an accurate diagnosis, you can go visit your local eye care professional. If you are interested in laser eye surgery, schedule a consultation with Dr. William Boothe. Our eye center is located in Plano, Texas and have served over 100,000 patients.

