"read perfectly" is correct and usable in written English.
You can use it when you want to emphasize that someone has read something accurately and completely. For example: "The students read the passage perfectly, understanding each word and theme completely."
"Anything we wrote for him he could read perfectly… His first reading of a script would be absolutely correct.
After five days of painstaking installation, the words read perfectly from one vantage point and appeared skewed from all other points of view.
With so many different browsers around these days, a web page that can be read perfectly using, say, Internet Explorer may stutter or stall when viewed in Firefox or Safari.
"The legendary smoothness of the House of Menthol is energetically fused with hints of the unexpected," they read, "perfectly balanced, yet intriguing refreshment that bonds with any special occasion".
Toby Alderweireld dissected Everton's central defence with a long ball that Alli read perfectly and executed superbly, stealing in ahead of Coleman to control on his chest before sending a first-time volley beyond Howard.
"I have to read perfectly well the rules to see if we can appeal with a second yellow card - I'm not so sure.
She reads perfectly well," the official said.
I got an ovation the other day from a roomful of Indian 20-year-olds just for reading perfectly the following paragraph: "A bottle of bottled water held 30 little turtles.
Tim Etchells has, retrospectively, put the writing on the wall for the old harbour station – his neon lettering along both curves of the derelict platforms reads, perfectly poignantly: "Coming and going is why the place is there at all".
Approximately 38% of 2.5 million reads (963,460 reads) were repetitive DNA sequences, tRNA, rRNA or other small molecules; 10% (261,274) were accepted reads, perfectly aligned with known mature miRNAs (MirBase version 15, release 04/2010) [9]; and the rest of the reads (52%) were matched to genome sequences (Figure 1).
Of the 50,746,504 mappable RNAs obtained above, 292 reads perfectly match the RBIV-C1 genome sequence.
