A vision of 4.5 is usually the vision that a child can have around the age of 2, but once over the age of 3, it is definitely a bit low if there is a vision of 4.5. This is the time to go to the hospital for a vision and optometry examination and, in the case of younger children, an atropine slow dilatation optometry examination, which requires the use of atropine for 3 days and an optometry on the 4th day. If there is a high degree of hyperopia, often combined with amblyopia, it may be necessary to not only correct the hyperopia and wear glasses but also to train for amblyopia. If myopia is present, myopic glasses are needed because 4.5 vision is relatively low and can often cause over-regulation, leading to excessive myopia growth, which can be slowed by glasses. If your vision does not improve with glasses, it is important to rule out organic eye pathology, such as cataracts or fundus pathology affecting vision. If you can rule out organic lesions and your corrected vision does not improve, you can be diagnosed with amblyopia, which requires active treatment.