#snellen

[mcatmemoranda]

To use the Snellen chart, stand 20 feet away and read the rows of letters, starting at the top and working your way to the bottom. Do this while covering one eye and reading the chart with your uncovered eye. When you finish with one eye, restart the test with your other eye uncovered.

Each row of the Snellen chart represents a level of visual acuity, which is based on two numbers. The first number describes the Snellen chart’s distance from the patient. In the U.S., this number will almost always be 20 to represent 20 feet of distance. Countries that use the metric system will normally use the number 6 to represent a distance of 6 meters.

The second number describes how clearly a person can read a line of the Snellen chart from 20 feet away. For example, if someone has 20/20 vision, or “normal” vision, it means they can clearly read a line from 20 feet away that the average person could.

If someone has 20/50 vision, it means they have to be 20 feet away to read a line from the chart that someone with “normal” vision could read from 50 feet away. Source

The denominator being a larger number means worse vision. The denominator being a smaller number means better vision.

#Snellen #Snellen chart #vision #vision screen #visual acuity

[fliponline]

🎁 Born #OnThisDay in 1834… Herman Snellen, a Dutch ophthalmologist who developed the eye chart still used to measure vision.

⭕ #Lazarusheart at @Redbubble (link in bio) 👇https://www.redbubble.com/shop/ap/119002879?asc=u

#lazarusheart #redbubble #snellen #herman snellen #opthalmology #lgbtq #fag #homo #queer #bender #nancy #bummer

[pixel8eruk]

These custom Snellen eye chart test lyric prints will really see if people can see the song that means something to you. Pick a song, and verse, somewhere in the region of 70-80 letters work best, but can be adapted when possible. Perfect gifts to remember a song, commemorate that first kiss, that first dance, or that song that reminds you of 'looking good on the dance floor', bringing back memories of those 'Boogie Nights' perfect on the wall at 'Home Sweet Home'. #customlyrics #lyrif #buy #gift #anniversary #fun #wallart #mileycryus #oasis #journey #dream #walldecor #typography #eyetest #snellen #personalised #print #graphic #design #foofighters https://www.instagram.com/p/CoCp_bVoqQ1/?igshid=NGJjMDIxMWI=

#customlyrics #lyrif #buy #gift #anniversary #fun #wallart #mileycryus #oasis #journey #dream #walldecor #typography #eyetest #snellen #personalised #print #graphic #design #foofighters

[bonojour]

russell crowe in the tofog video for 'circus'

#russell crowe #russellcroweedit #gilles gifs #these are so cronchy im sorry #maybe i should go to russell his concerts in june and bring a sign asking for remastered tofog videos HFSDFSDF #esp sail those same oceans NEEDS a remaster he's so pretty #also for the longest time i thought his cap said LAPD and i was like.... Okay Cop #but now i just noticed that it says LAFD DSJKFSDHFK #i failed the snellen chart

[s0up1ta]

fun fact im legally blind in my right eye

found out a few days ago 😌

#20 over fucking 200 vision right here lads #i currently take anatomy so we were doing a bunch of eye shit cause of the leason we're on #and of course we take ye old #snellen chart test #and i cant even see that big ass E on the very top with my left eye shut #so that's fun #just needed to let the world know #s0up1talks

[serethereal]

i cant believe u guys wear glasses fr…

#when i was a kid i pretended i couldn’t read the snellen chart but the opthalmologist saw right thru me (pun intended ofc)…

[collecting--stardust]

TIL that my right eye had gone haywire and shit

#story time! because im annoying #so today is my first day of clinical posting this semester and im posted to eye clinic #so we did our assessment (which the marks not as high as i expected) which are performing visual acuity test and instil eye drops #and when my friend did the visual acuity test on me my right eye vision is shit even when im wearing my glasses #it was 6/18 (which in the snellen chart i only managed to read until the 3rd row) #my left eye is okay and i thought i was tripping tbh #my ci thought my glasses' power increases as hell so she sent me to the low vision specialist part of the clinic #the ophthalmologist mention a medical condition idk the name and did the test like you would when you want to buy prescription glasses #the one where you wear a weird glasses and they keep on changing the lenses and ask you if its clearer or what #ANYWAY #turns out that when i was younger apparently the shop i made my glasses did the wrong prescription glasses #like my left eye was right but my right eye was wrong and it made my right eye turn to shit #so my power for my left eye is 300 while my right eye is 600+ #but they cant give me the 600 on my right eye because then it will autocorrect #like if i occlude my left eye i can see the it clearer but as a pair of glasses it will be hard to read as the words will merge and all #so what the glasses shop i got my latest glasses did is they balanced the power on each side so that i can see better #thats why when i did the visual acuity test my right eye is shit because my glasses is made that way to balance it #its a really good news though because i thought that i need to buy new glasses #he did mention that my 'silau' increases tho but that's fine #the more you know 👀 #personal.txt

[the-gayest-sky-kid]

pet peeve: people who make lyric videos and put the lyrics in a weird font, colour and/or outline, or make the lyrics small

fuck you and your fucking aesthetic i came here so i could read the lyrics alongside the music, and you make them fucking unreadable??? you motherfucking-

#i am a #Bit annoyed #maybe more than that #its like #how am i supposed to read this shit you dumbass #do your job correctly or dont do it at all whats the point #your lyrics shouldn't be like the last line on the fucking snellen eye chart oh my GOD #swearing cw #rant tw #rant cw #lumine/aether/sky rants

[liwiafuria]

L.W.R. Wenckebach for In De Muizenwereld by Agatha Snellen (Netherlands, 1894)

#rats #l. w. r. wenckebach #in de muizenwereld #agatha snellen

[piepiepiemag]

DO YOU GUYS THINK HIS COCK ALSO HAS

M

I

D

A

S

TATTOOED ON IT LIKE???? 😭😭😭😭

#he would #glitching into his pants to check brb #BRO I WAS TRYING TO FALL ASLEEP ONLY FOR THIS TO POP UP IN MY HEAD #fukcing ugly crying at this #0/10 dying on the spot from laughing #nsft text #fortnite #midas #fortnite midas #midas fortnite #KILL ME #magpie talks will they shut up? #truly *the* headcanons of all time #this was in my drafts for a week it’s time to unleash it now #bro has the fucking snellen chart eye exam reading thing down there #i uhhh i see an M? or an N?? uhhhh??? #i need new glasses

[heintzmagic]

#Snellen chart

[elevatortheory]

on one hand this is really clever on the other hand i am so stupid and did not understand what the hell they were spelling here

#rio rambles #also just learned apparently those are called snellen eye charts . okay

[kashmirsurgicalworks]

Find Snellen Eye Chart Manufacturers In India

Snellen Eye Chart Manufacturers in India: Eye charts are one of the numerous instruments the doctor uses during an eye exam, but they help assess one’s eyesight. During an eye exam, eye charts assess visual acuity by comparing how well one can see to other people. The eye doctor asks the patient to read the minor line of writing that one can make out from 20 feet away while looking at the eye chart.

Read more: 

#Eye Chart Manufacturers in India #snellen eye chart #Snellen Eye Chart Manufacturer #vision testing chart #Vision Testing Chart Supplier #distance vision chart manufacturer

[cepheusgalaxy]

"The standard visual acuity test in the U.S. is the Snellen eye chart. It measures the clarity of your vision at a distance of 20 feet from an object. If you have 20/20 vision, which is the average score, it means you can see an object clearly from 20 feet away.

If your score is 20/70, it means that your vision at 20 feet is like normal vision at 70 feet. The World Health Organization (WHO) classifies this score as moderate visual impairment or moderate low vision. A score of 20/200 or above qualifies as severe low vision."

-- link

interesting....so that's what these mean. very interesting indeed.

#lis oc #blind characters

[maklodes]

The “how many fingers am I holding up?” gambit from My Cousin Vinny was a really ballsy move on Vinny’s part when you think about it. Supposedly, lawyers usually operate on the principle of “never ask a witness a question if you don’t know the answer,” but in Vinny’s case, he is not only:

asking Mrs. Riley a question to which neither of them knew how she would answer in advance, and

asking a one-off question as a test of visual acuity, rather than providing something more standard like a Snellen chart which would test her visual acuity repeatedly, relying on her to fail in that singular one-off test, but

using a test in which even if she guessed randomly, with an integer between 1 and 4, she would have a 25% chance of giving the correct/bad for the defense answer. (Ruling out the zero-fingers closed fist and the five-fingers open palm, on the basis that those would be different enough at a crude level to be obvious even at some level of impaired vision)

#film #my cousin vinny

[noprincess]

nagwoworry ako kanina sa snellen kase nga alam ko malabo ung right eye ko, may astigmatism. tas nagulat ako 20/20 nilagay ni sir hahahaha buti talaga lumusot. pati na ren sa bmi, sumakto pa ko sa normal range. haaysss, 3more to go! lesdodiiz!