Undergraduate /
The world I come from is practically non-existent -- visually, at least; Neuroscience UC Prompt #1 [8]
This is a very compelling essay, but some of the grammatical errors detract from your narrative. I'll focus my suggestions on the intro paragraph, and hopefully you can apply the principles throughout the rest of the essay.
"If you were to meet me, the first thing you would probably notice is that my sense of sight is lacking."
This phrasing is slightly awkward, you could rephrase it as something like "One of the first things people notice about me is my poor sense of sight." You might want to chose a more descriptive word than 'poor' however.
"As a child, my eyesight began to deteriorate, and as the progression of my visual impairment continued to worsen, I turned to my creative instincts to fill the void."
Too many commas, and the sentence is a little overly complex. I would simplify it. For example: "My eyesight began to deteriorate in childhood, and as my visual impairment worsened, I turned to my creative instincts to fill the void."
"Spending countless hours adorned in Victorian gowns, I was intrigued by the fact that I did not need to physically visualize its beauty."
You switch from present to past tense, and you have a pronoun antecedent disagreement. I would rephrase this as "I spent countless hours adorned in Victorian gowns, intrigued by the fact that I did not need to physically visualize their beauty."
"Running my hand across the faux taffeta silk, stumbling upon each bead that was inlaid into the crevices of the fabric, gave off a sensation that was enough for me to comprehend the elegance of each gown."
This is very powerful descriptive language, I can almost feel the gowns in my hand as you describe them. However it is marred by comma splices, which makes it harder to follow along. Again the tense feels inconsistent. Your descriptive language is one of your essays strengths, so I would definitely focus on making it as clear as possible.
"And with each gown emerged a new personality, polar to my own, that created a completely different world: the world of my imagination."
I would avoid starting sentences with "and". The punctuation isn't technically correct either. I understand what you mean by 'personalities', but I would consider using the word 'characters' instead. 'Personalities' may lead to the impression that you have multiple personality disorder.
"It is in this place that I am able to express the emotions that consume my thoughts; it is uniquely my own, and, for that, it is where I feel an utter sense of satisfaction."
Again improper punctuation distracts from what is a very beautiful thought. I love how you take the word 'place' mentioned in the prompt as not a physical location, but rather a mental 'place', one that wearing the dresses takes you. The punctation unfortunately hinders you, especially in "...my own, and, for that, it is...". This loses the reader and makes it confusing.
Overall, you have a very powerful story and vivid descriptions, but your story is crippled by mechanical errors. Simplifying sentences and improving clarity will go a long way towards improving your essay.
Good luck with your applications!