The opticians will be able to conduct frequent eye tests to diagnose common problems that the patients come across frequently. They will perform extensive examination of the eyes with sophisticated equipment. They would require the patients to read letters from several charts to verify the accuracy of your vision. a torch or a bright light will be used on your eyes to check the reflection status. To take a closer look, the optician might use drops in the eye to dilate the pupil.
Based upon the results and the patient's vision from different distances, the optician will be able to prescribe you the correct glasses or lenses. Each test differs from the age of the patient. Usually these tests are conducted by the ophthalmologists. The refraction tests are also conducted which determine the prescription of contact lenses or glasses. Everyone should go for eye tests every two to three years. People with continuous vision problems and patients above the age of 40 must go for frequent eye tests. The normal result in a refraction test is 20/20 which means perfect vision.
Any deviation in the above measurement indicates that the patient is suffering from nearsightedness, farsightedness, astigmatism or presbyopia. Other tests would determine if the patient is suffering from ulcers, corneal infections, retina related problems, macular degeneration or blockage of blood flow in the retina, etc. Early detection and cure will always save us from great damage.