Eye diseases like cataracts and glaucoma may cause low vision, which means part of the vision is lost permanently. These diseases are serious one, and patients need to see their ophthalmologist without delay for checkup of vision optics, and finally doctor may recommend different vision optical aids to be used in different occasions.
Unlike the regular vision disorders of myopia and hyperopia, these patients' eyes show severe off-axis low vision optics which can cause huge refractive errors. These errors can't be corrected by wearing glasses, on the contrary patients have lost some of their visions. Vision optical aids may be applied to help patients use the remaining vision sight to tackle their daily lives.
There are wide array of vision optical magnifiers for specific use. It is pretty difficult for patients to have one-for-all aid for different occasions. Patients may need one for reading newspapers, one for cooking and the other for watching TV.
It is very crucial for ophthalmologists to determine the correct power or strength of the magnifier aid for the patient. A correct strength vision optical aid helps enhance patient's vision optics and ensure to have a joyful life.
Hand-held magnifier is the one form of vision optical aid. Patients need to practice to be accustomed to this new tool. An easy yet useful tip for properly using this vision optical aid is to hold the aid straight and keep the eyes, the magnifier and the target on the same line, otherwise the target will be distorted and will not be seen clear behind the vision optical magnifier.