What does vision 4.5 correspond to?
Dec 10, 2025
Source: Cainiu Health
Dr. Li Feng
Introduction
Visual acuity of 4.5 on the logarithmic visual chart corresponds to 0.3 on the decimal visual chart, indicating insufficient clarity when viewing distant objects. This may result in blurred or double vision when looking at faraway items. In daily life, one might need to move closer to see things like blackboards or road signs clearly. This condition is commonly associated with refractive errors such as myopia or astigmatism.
Generally, a logarithmic visual acuity of 4.5 roughly corresponds to a decimal visual acuity of 0.3, indicating mild vision decline. If concerned, it is advisable to seek medical consultation promptly. Detailed analysis is as follows:
A visual acuity of 4.5 is measured using the logarithmic visual acuity chart and corresponds to 0.3 on the decimal chart, suggesting insufficient clarity when viewing distant objects. This may result in blurred or double vision when looking at faraway items. Daily activities such as reading blackboards or road signs may require being closer to see clearly, commonly seen in refractive errors like myopia or astigmatism.
However, this correspondence is not absolute, as individual eye conditions vary. Some individuals may have a visual acuity of 4.5 due to eye diseases such as corneal injury or cataracts rather than simple refractive error. In these cases, symptoms beyond reduced vision—such as dry eyes, eye pain, or photophobia—may also be present.
A visual acuity of 4.5 warrants timely comprehensive eye examination at a qualified medical facility to determine the underlying cause of vision loss and receive appropriate correction or treatment. Maintain good eye hygiene in daily life, avoid prolonged near-work, and schedule regular follow-up eye exams to monitor vision changes.
