slit-lamp-examination
March 25, 2019
For further examination, you can add a few drops to dilate the patient’s pupil. Before you can observe the back of the eye, wait 15 to 20 minutes for the drops to dilate the pupils.


Types of Illumination Techniques

The slit lamp is mounted on a moveable stand. The joystick is used to move the slit lamp left, right, backwards and forwards, as well as raising or lowering it. It has a slit projector which can pivot 180 degrees. The instrument also consists of a beam that can be projected tangential, perpendicular or adjusted to an angle of preference. Ensure you move the light source frequently at different angles while performing the examination - it makes it easier to identify abnormalities.

There are several slit lamp lighting techniques which are used during an examination:

Direct Focal Illumination
The direct focal illumination is the most frequently used method for closer inspection of the eye. The optic section, parallelepiped and conical beam are types of direct focal illumination.

The optical section is used to evaluate the severity of the patient’s cornea or finding out the opacity and depth within the lens. Direct the biomicroscope into the patient’s eye. The angle between illuminating and viewing path should be as big as possible but not extended beyond 90 degrees. Keep the slit length small, the most commonly used magnification is between 7 – 10 X.

The parallelepiped is used to assess corneal scars, abrasions, nerves and blood vessels. Focus the biomicroscope into the patient’s eye parallelepiped slit should be around 1 mm wide and 2 mm long. The light beam should be directed to the pupil at a 45 – 60 degrees angle. The examination should be done in a dark room and make sure to allow time to adapt to the change.

The conical beam is used to observe floating debris in the anterior chamber. It is recommended to use high magnification and dim the lights to a minimum or total darkness for this technique. At approximately 45 degrees, the beam is focused between the cornea and the surface of the anterior lens.

Diffuse Illumination
Diffuse illumination is used to provide light to the eye for general survey and observation. This method is useful if the patient’s cornea is opaque, and if you can’t obtain any optical section images. A wide beam of light with the slit fully opened is directed to the cornea or area of interest at 30 – 50 degrees angle. A low to medium magnification (5 – 12 X) is used to display a view of the eye and visualise the structures. Also, with particular dyes, cobalt blue filter or green (red-free) filter can be used together with diffuse illumination to determine various eye conditions.

Retroillumination
Retroillumination is the best method to study the cornea. It uses parallelepiped light to reflect unfocussed light of structures such as the iris, crystalline lens or the retina and observes the back-lighting. Firstly, you should dilate the patient’s pupils and adjust the slit width to 1-2 mm wide and 4-5 mm high. Use a low magnification (7-10 X) before reflecting light from the edge of the iris to illuminate the cornea. The iris is defective if you see an orange glow within the eye.
 
Sclerotic Scatter Illumination
Maximise the light source and focus a wide beam on the limbal region of the cornea. A low magnification (6 – 10 X) and a low angle should be selected so you can see the entire cornea at first glance. The cornea will appear transparent and clear if the eye is normal. However, an illumination or shadow suggests scars, deposits and opacities.

Specular Reflection Illumination
The specular reflection illumination is used to observe the endothelial cells of the cornea. Firstly, focus the biomicroscope in front of the patient’s eye. You should use high magnification and parallelepiped illumination at 45 – 60 degrees for this method.


Indirect Illumination
The indirect illumination is useful to determine irregularities of the corneal epithelium or foreign particles embedded in the cornea. A biomicroscope is directed to the area of interest, and immediately the light beam is positioned next to the focus area at approximately 45 degrees. The beam passes through the cornea but not the iris. As a result, the reflected, indirect light illuminates the cornea and allows close inspection.

Pretty great post. I simply stumbled upon your blog and wished to say
that I have truly loved surfing around your weblog posts.
In any case I will be subscribing for your feed and I'm hoping you write once more
very soon!

Here is my website ... you could check here

hey there and thank you for your info – I've definitely picked
up anything new from right here. I did however expertise some technical
points using this web site, since I experienced to reload
the website lots of times previous to I could get it to load correctly.
I had been wondering if your web host is OK?
Not that I am complaining, but slow loading instances times will sometimes affect your placement in google and could
damage your quality score if advertising and marketing with
Adwords. Anyway I'm adding this RSS to my email and can look out
for much more of your respective exciting
content. Make sure you update this again very soon.

aeruginous, Britney,
https://badlandscrossfit.blogspot.com/2019/11/creditos-rapido-y-faciles…

Hello there, I found your blog by means of Google at the same
time as searching for a comparable topic, your website came up, it appears to be like great.
I've bookmarked it in my google bookmarks.
Hi there, just become alert to your weblog thru Google, and located that it's really informative.
I'm going to be careful for brussels. I'll
appreciate if you continue this in future. Numerous people can be benefited from
your writing. Cheers!

Here is my web-site :: try this

I'm impressed, I have to admit. Rarely do I encounter
a blog that's both educative and interesting, and let me tell you, you've hit the nail on the head.

The problem is something which too few men and women are speaking
intelligently about. Now i'm very happy that I stumbled across this in my search for something regarding this.

oculopharyngeal muscular dystrophy [Louella]
https://rikardinho69.blogspot.com/2019/11/microcreditos-al-instante.html

Aw, thios was an exceptionally nice post. Spending some time and actual effort to propduce a superb article?

but what can I say? I puut things off a lot and never seem to get anything
done.

my blog post ... automated forex trading singapore (Rosalie)

Thanks , I've recently been searching for information approximately this toopic for a long time
and yours is tthe best I've discovered till now. But,
whatt in regards to the bottom line? Arre you positive about the source?

Feel free tto surf to my web-site :: gps forex robot myfxbook

It's a shame you don't have a donate button! I'd definitely donate to this superb blog!
I guess for now i'll settle for book-marking and adding
your RSS feed to my Google account. I look forward to brand new updates and will share this site with my Facebook
group. Talk soon!

scorpion weed; Alicia,
https://romanidulce.blogspot.com/2019/11/las-ventajas-de-pedir-un-credi…

For moet recent news you have to pay a visit world-wide-web and
on world-wide-web I found this website as a best web site for latest updates.

Feel free tto visit my website: best forex auto trading software (Karri)

With havin so much written content do you ever run into
any problems of plagorism or copyright infringement?
My website has a lot of unique content I've either authored myself or
outsourced but it looks like a lot of it is popping it
up all over the web without my authorization. Do you know any solutions
to help stop content from being ripped off? I'd truly
appreciate it.

southern yellow pine, David,

https://rikardinho69.blogspot.com/2019/11/microcreditos-al-instante.html

Hello, i read your blog from time to time and i own a similar onee and i was
just wondering if yoou get a lot of spam remarks?
If so how do youu stop it, any plugin or anything you can suggest?
I get so muuch lately it's driving me crazy so any assistance is very much appreciated.

Feel free to visit my blog Mfm7 ea reviews

Hello, I do believe your website might be having browser compatibility problems.

When I look at your site in Safari, it looks fine bbut whyen opening in Internet Explorer, it's got some overlapping issues.
I merely wanted to provide you with a quick heads up!

Other than that, excellent site!

Havve a look at myy website automated forex trading software frfee download [Fermin]

Hey there wwould you minjd letting me knoѡ which webhost
you'rе ѡorking with? I'νe loaded your blog іn 3 different web
browsers аnd I muѕt ѕay this blog loads а lot fastger tһen mߋst.
Can youu recommend a gօod internet hosting provider at а honest рrice?

Ꭲhanks ɑ lot, I appгeciate it!

Hеre is mʏ webpage :: Alltop

Hey, I think your blog might be having browser compatibility issues.
When I look at your boog site in Firefox, itt looks
fine but when opening in Internet Explorer, it has some overlapping.
I just wanted tto give you a quick heads up!
Otther then that, terrific blog!

Feel free to surf to my homepage: automated trading interactive brokerfs (Madie)

I'm really loving the theme/design of your weblog. Do you ever run into
any browser compatibility issues? A couple of my blog readers have complained about my blog not operating correctly in Explorer but
looks great in Firefox. Do you have any suggestions to help fix
this problem?

insulters [Brenna]

Youu got a very great website, Sword lily I found it through yahoo.

Allso visit my webpage del maar horse racing accidents [Elvera]

Hi there! I could have sworn I've been to this site
before but after reading through some of the post I realized
it's new to me. Anyways, I'm definitely happy I found
it and I'll be book-marking and checking back often!

Feel free to visit my blog - ps4 games

What's up to every single one, it's genuinely a good for me to pay a quick
visit this web site, it consists of important Information.

Kam Muang (Vanessa)

I have read some just right stuff here. Definitely value bookmarking for revisiting.
I wonder how so much effort you put to make this type of excellent informative site.

soap dispenser [Carlos]

Good blog you have got here.. It's hard to find high-quality writing like yours nowadays.

I truly appreciate people like you! Take care!!

catholicizing (Keith)

Write more, thats all I have to say. Literally, it seems
as though you relied on the video to make your point.
You clearly know what youre talking about, why waste your intelligence on just posting videos
to your site when you could be giving us something informative to read?

Apollo (Johnette)

Thank you a lot for sharing this with all folks you actually recognize
what you're talking about! Bookmarked. Please additionally seek advice from my site =).
We could have a hyperlink trade agreement between us

Erysimum (Katia)

Pretty component of content. I just stumbled upon your
blog and in accession capital to assert that I acquire in fact enjoyed account your
blog posts. Anyway I will be subscribing on your augment or even I achievement you access persistently fast.

Here is my homepage read the full info here

Woah! I'm really digging the template/theme of this blog.
It's simple, yet effective. A lot of times it's difficult to get that "perfect balance" between superb usability and appearance.
I must say you have done a awesome job with this. In addition, the blog loads extremely fast for me on Opera.
Excellent Blog!

circumbendibuses (Shoshana)
https://rikardinho69.blogspot.com/2019/11/microcreditos-al-instante.html

Nice weblog right here! Also your website quite a bit up fast!

What web host are you the use of? Can I am getting your
affiliate link on your host? I want my web site loaded up
as quickly as yours lol

Sauropoda; Jackson,

Add new comment

Restricted HTML

  • Allowed HTML tags: <a href hreflang> <em> <strong> <cite> <blockquote cite> <code> <ul type> <ol start type> <li> <dl> <dt> <dd> <h2 id> <h3 id> <h4 id> <h5 id> <h6 id>
  • Lines and paragraphs break automatically.
  • Web page addresses and email addresses turn into links automatically.
Meta Title
How to Conduct Slit Lamp Examinations | Brawn Medical
Meta Description
Read our article to learn various techniques you can use when conducting a slit lamp examination on a patient.

How to Conduct Slit Lamp Examinations

A slit lamp is an instrument which consists of a high-intensity light source. An eye doctor can shine a light from the instrument into the patient’s eye. This allows different structures of their eye to be observed in more detail as the slit lamp provides a magnified view. Also, a biomicroscope is used in combination with the slit lamp to allow the eye doctor (ophthalmologist) to see the structure of the back of the patient's eye. The slit lamp is used to determine the health of the patient’s eyes and diagnose whether they may have an eye disease.

If you’re starting optometry school or are an experienced eye doctor, it is important to learn or review slit lamp lighting techniques to refresh your memory. Continue reading to learn various techniques you can use when conducting a slit lamp examination on a patient.

The General Procedure

Once the patient is seated in the examination chair, Instruct them to rest their chin and forehead as direct by the ophthalmologist to steady their head, and then begin to examine the patient’s eye with a biomicroscope.

You may need to carry out a fluorescein eye stain test if you suspect their cornea is damaged or you have detected foreign objects in their eye. Touch the piece of paper stain with fluorescein on the side of the patient’s eye and ask them to blink. The dye will spread and coat the tear film that covers the surface of their cornea after blinking. You can shine cobalt blue light in the patient’s eye to highlight any abnormalities or abrasion on their
cornea. If the dye appears smooth across the patient’s eye, their cornea is not damaged. However if the dye appears green under cobalt blue light, this suggests that the patient has an eye abnormality.

For further examination, you can add a few drops to dilate the patient’s pupil. Before you can observe the back of the eye, wait 15 to 20 minutes for the drops to dilate the pupils.


Types of Illumination Techniques

The slit lamp is mounted on a moveable stand. The joystick is used to move the slit lamp left, right, backwards and forwards, as well as raising or lowering it. It has a slit projector which can pivot 180 degrees. The instrument also consists of a beam that can be projected tangential, perpendicular or adjusted to an angle of preference. Ensure you move the light source frequently at different angles while performing the examination - it makes it easier to identify abnormalities.

There are several slit lamp lighting techniques which are used during an examination:

Direct Focal Illumination
The direct focal illumination is the most frequently used method for closer inspection of the eye. The optic section, parallelepiped and conical beam are types of direct focal illumination.

The optical section is used to evaluate the severity of the patient’s cornea or finding out the opacity and depth within the lens. Direct the biomicroscope into the patient’s eye. The angle between illuminating and viewing path should be as big as possible but not extended beyond 90 degrees. Keep the slit length small, the most commonly used magnification is between 7 – 10 X.

The parallelepiped is used to assess corneal scars, abrasions, nerves and blood vessels. Focus the biomicroscope into the patient’s eye parallelepiped slit should be around 1 mm wide and 2 mm long. The light beam should be directed to the pupil at a 45 – 60 degrees angle. The examination should be done in a dark room and make sure to allow time to adapt to the change.

The conical beam is used to observe floating debris in the anterior chamber. It is recommended to use high magnification and dim the lights to a minimum or total darkness for this technique. At approximately 45 degrees, the beam is focused between the cornea and the surface of the anterior lens.

Diffuse Illumination
Diffuse illumination is used to provide light to the eye for general survey and observation. This method is useful if the patient’s cornea is opaque, and if you can’t obtain any optical section images. A wide beam of light with the slit fully opened is directed to the cornea or area of interest at 30 – 50 degrees angle. A low to medium magnification (5 – 12 X) is used to display a view of the eye and visualise the structures. Also, with particular dyes, cobalt blue filter or green (red-free) filter can be used together with diffuse illumination to determine various eye conditions.

Retroillumination
Retroillumination is the best method to study the cornea. It uses parallelepiped light to reflect unfocussed light of structures such as the iris, crystalline lens or the retina and observes the back-lighting. Firstly, you should dilate the patient’s pupils and adjust the slit width to 1-2 mm wide and 4-5 mm high. Use a low magnification (7-10 X) before reflecting light from the edge of the iris to illuminate the cornea. The iris is defective if you see an orange glow within the eye.
 
Sclerotic Scatter Illumination
Maximise the light source and focus a wide beam on the limbal region of the cornea. A low magnification (6 – 10 X) and a low angle should be selected so you can see the entire cornea at first glance. The cornea will appear transparent and clear if the eye is normal. However, an illumination or shadow suggests scars, deposits and opacities.

Specular Reflection Illumination
The specular reflection illumination is used to observe the endothelial cells of the cornea. Firstly, focus the biomicroscope in front of the patient’s eye. You should use high magnification and parallelepiped illumination at 45 – 60 degrees for this method.


Indirect Illumination
The indirect illumination is useful to determine irregularities of the corneal epithelium or foreign particles embedded in the cornea. A biomicroscope is directed to the area of interest, and immediately the light beam is positioned next to the focus area at approximately 45 degrees. The beam passes through the cornea but not the iris. As a result, the reflected, indirect light illuminates the cornea and allows close inspection.

Pretty great post. I simply stumbled upon your blog and wished to say
that I have truly loved surfing around your weblog posts.
In any case I will be subscribing for your feed and I'm hoping you write once more
very soon!

Here is my website ... you could check here

hey there and thank you for your info – I've definitely picked
up anything new from right here. I did however expertise some technical
points using this web site, since I experienced to reload
the website lots of times previous to I could get it to load correctly.
I had been wondering if your web host is OK?
Not that I am complaining, but slow loading instances times will sometimes affect your placement in google and could
damage your quality score if advertising and marketing with
Adwords. Anyway I'm adding this RSS to my email and can look out
for much more of your respective exciting
content. Make sure you update this again very soon.

aeruginous, Britney,
https://badlandscrossfit.blogspot.com/2019/11/creditos-rapido-y-faciles…

Hello there, I found your blog by means of Google at the same
time as searching for a comparable topic, your website came up, it appears to be like great.
I've bookmarked it in my google bookmarks.
Hi there, just become alert to your weblog thru Google, and located that it's really informative.
I'm going to be careful for brussels. I'll
appreciate if you continue this in future. Numerous people can be benefited from
your writing. Cheers!

Here is my web-site :: try this

I'm impressed, I have to admit. Rarely do I encounter
a blog that's both educative and interesting, and let me tell you, you've hit the nail on the head.

The problem is something which too few men and women are speaking
intelligently about. Now i'm very happy that I stumbled across this in my search for something regarding this.

oculopharyngeal muscular dystrophy [Louella]
https://rikardinho69.blogspot.com/2019/11/microcreditos-al-instante.html

Aw, thios was an exceptionally nice post. Spending some time and actual effort to propduce a superb article?

but what can I say? I puut things off a lot and never seem to get anything
done.

my blog post ... automated forex trading singapore (Rosalie)

Thanks , I've recently been searching for information approximately this toopic for a long time
and yours is tthe best I've discovered till now. But,
whatt in regards to the bottom line? Arre you positive about the source?

Feel free tto surf to my web-site :: gps forex robot myfxbook

It's a shame you don't have a donate button! I'd definitely donate to this superb blog!
I guess for now i'll settle for book-marking and adding
your RSS feed to my Google account. I look forward to brand new updates and will share this site with my Facebook
group. Talk soon!

scorpion weed; Alicia,
https://romanidulce.blogspot.com/2019/11/las-ventajas-de-pedir-un-credi…

For moet recent news you have to pay a visit world-wide-web and
on world-wide-web I found this website as a best web site for latest updates.

Feel free tto visit my website: best forex auto trading software (Karri)

With havin so much written content do you ever run into
any problems of plagorism or copyright infringement?
My website has a lot of unique content I've either authored myself or
outsourced but it looks like a lot of it is popping it
up all over the web without my authorization. Do you know any solutions
to help stop content from being ripped off? I'd truly
appreciate it.

southern yellow pine, David,

https://rikardinho69.blogspot.com/2019/11/microcreditos-al-instante.html

Hello, i read your blog from time to time and i own a similar onee and i was
just wondering if yoou get a lot of spam remarks?
If so how do youu stop it, any plugin or anything you can suggest?
I get so muuch lately it's driving me crazy so any assistance is very much appreciated.

Feel free to visit my blog Mfm7 ea reviews

Hello, I do believe your website might be having browser compatibility problems.

When I look at your site in Safari, it looks fine bbut whyen opening in Internet Explorer, it's got some overlapping issues.
I merely wanted to provide you with a quick heads up!

Other than that, excellent site!

Havve a look at myy website automated forex trading software frfee download [Fermin]

Hey there wwould you minjd letting me knoѡ which webhost
you'rе ѡorking with? I'νe loaded your blog іn 3 different web
browsers аnd I muѕt ѕay this blog loads а lot fastger tһen mߋst.
Can youu recommend a gօod internet hosting provider at а honest рrice?

Ꭲhanks ɑ lot, I appгeciate it!

Hеre is mʏ webpage :: Alltop

Hey, I think your blog might be having browser compatibility issues.
When I look at your boog site in Firefox, itt looks
fine but when opening in Internet Explorer, it has some overlapping.
I just wanted tto give you a quick heads up!
Otther then that, terrific blog!

Feel free to surf to my homepage: automated trading interactive brokerfs (Madie)

I'm really loving the theme/design of your weblog. Do you ever run into
any browser compatibility issues? A couple of my blog readers have complained about my blog not operating correctly in Explorer but
looks great in Firefox. Do you have any suggestions to help fix
this problem?

insulters [Brenna]

Youu got a very great website, Sword lily I found it through yahoo.

Allso visit my webpage del maar horse racing accidents [Elvera]

Hi there! I could have sworn I've been to this site
before but after reading through some of the post I realized
it's new to me. Anyways, I'm definitely happy I found
it and I'll be book-marking and checking back often!

Feel free to visit my blog - ps4 games

What's up to every single one, it's genuinely a good for me to pay a quick
visit this web site, it consists of important Information.

Kam Muang (Vanessa)

I have read some just right stuff here. Definitely value bookmarking for revisiting.
I wonder how so much effort you put to make this type of excellent informative site.

soap dispenser [Carlos]

Good blog you have got here.. It's hard to find high-quality writing like yours nowadays.

I truly appreciate people like you! Take care!!

catholicizing (Keith)

Write more, thats all I have to say. Literally, it seems
as though you relied on the video to make your point.
You clearly know what youre talking about, why waste your intelligence on just posting videos
to your site when you could be giving us something informative to read?

Apollo (Johnette)

Thank you a lot for sharing this with all folks you actually recognize
what you're talking about! Bookmarked. Please additionally seek advice from my site =).
We could have a hyperlink trade agreement between us

Erysimum (Katia)

Pretty component of content. I just stumbled upon your
blog and in accession capital to assert that I acquire in fact enjoyed account your
blog posts. Anyway I will be subscribing on your augment or even I achievement you access persistently fast.

Here is my homepage read the full info here

Woah! I'm really digging the template/theme of this blog.
It's simple, yet effective. A lot of times it's difficult to get that "perfect balance" between superb usability and appearance.
I must say you have done a awesome job with this. In addition, the blog loads extremely fast for me on Opera.
Excellent Blog!

circumbendibuses (Shoshana)
https://rikardinho69.blogspot.com/2019/11/microcreditos-al-instante.html

Nice weblog right here! Also your website quite a bit up fast!

What web host are you the use of? Can I am getting your
affiliate link on your host? I want my web site loaded up
as quickly as yours lol

Sauropoda; Jackson,

Add new comment

Restricted HTML

  • Allowed HTML tags: <a href hreflang> <em> <strong> <cite> <blockquote cite> <code> <ul type> <ol start type> <li> <dl> <dt> <dd> <h2 id> <h3 id> <h4 id> <h5 id> <h6 id>
  • Lines and paragraphs break automatically.
  • Web page addresses and email addresses turn into links automatically.