Visual Processing and its importance to reading

What is Visual Processing?

Visual processing is the brain's ability to interpret and make sense of visual information from the environment (different from visual acuity which measures how sharp your vision is at distance). In the context of reading, visual processing involves recognizing letters, decoding words, and understanding the spatial arrangement of text on a page. Good visual processing is necessary for these important reading skills:

1.     Letter Recognition: One of the fundamental skills in reading is the ability to recognize letters. Efficient visual processing allows individuals to quickly identify and distinguish between different letters, which forms the basis for word recognition.

2.     Word Decoding: Decoding involves translating written symbols (letters) into their corresponding sounds to pronounce words. Efficient visual processing facilitates rapid and accurate decoding, which helps to read fluently.

3.     Visual Tracking: Reading requires smooth and accurate eye movements to track text from left to right across a page. Strong visual processing skills help to maintain focus and prevent skipping or repeating lines while reading.

4.     Visual Memory: Remembering and recalling visual information, such as the shapes of letters and words, is essential for building vocabulary and comprehending text. A strong visual memory enables readers to recognize words encountered previously which helps us to read fluently. 

Here are some important foundations of visual processing abilities:

1.     Visual Discrimination: being able to recognize the differences and similarities between objects, symbols or shapes (in this case letters).

2.     Visual Memory: being able to remember what something looks like, which helps remember letters, sight words, and spelling rules.

3.     Visual Form Constancy: knowing that letters can exist in different contexts and being able to identify them across contexts.

4.     Visual Sequential Memory: being able to understand the sequence of order of words after viewing them. This helps with spelling and decoding words (ordering letters in a particular sequence). Difficulties here can result in meaning of words being changed and impacting understanding. 

5.     Visual Figure-Ground: ability to distinguish and find a particular object (or word) which helps with scanning text to find a particular piece of information.

6.     Visual Closure: being able to recognise a word when only a part of it is shown which helps to recognise a word without having to fully decode it each time it is encountered.