Surgical Teqniques Flashcards
What minimum magnification is needed for corneal/ conjunctival/ intraocular surgery?
5x
What is the ideal suture material and needle should be used for the cornea?
8.0 vicryl (polyglactin)
Spatula needle
Which type of needles should not be used for the cornea?
Cutting/ reverse cutting
Which needle should be used for the skin?
Cutting/ reverse cutting
Which needle should be used for the conjunctiva?
Taper point
What blade is used to cut the cornea?
Beaver blade
What is used for superficial keratectomy?
Restriction depth knives and lamellar knives
What should you use to clean the eye if it is perforated?
Sterile saline
Which breed of cat gets an anatomical entropion?
Which eyelid and where is affected?
Persians
Medial lower lid
What procedure is best to correct atonic trichiasis?
With the Stades procedure how much skin do you remove?
How much is left to heal by secondary intention?
20mm
5mm
How is a cicatricial ectropion repaired?
Y-to-V plasty (allows dissection of the underlying scar tissue)
What technique is this?
Lid shortening and canthal tie down
What technique is this?
Khunt-Szymanowski
What technique is this?
Wymans lateral canthoplasty
What technique is this?
What is it used for?
V to Y plasty
Cicatrical ectropion
What does lagophthalmos mean?
Poor blink
What is the treatment for macropalpebral fissure?
Lateral/ medial canthoplasty
If the lower canaliculus is involved in eyelid surgery what should be done?
Cannulated and sent left for approx 6weeks
What are the potential complications of using haired skin on the eyelid margin (2)?
Hair going in to the eye
Contracture of the lid post surgery causing a notched defect and exposure keratopathy
What technique is this?
What is it used for?
Mustarde technique
When 1/3-2/3 eyelid removed
When is a lip to lid procedure used?
> 2/3 lower eyelid removed
What depth should corneal sutures be placed?
2/3
What are cyanacrylate adhesives used for?
When should it not be used?
What is important to use before applying this?
Glue to seal small corneal defects
Infected ulceration
Perforations
Cornea needs to be completely dry (canned air)
What drop can be used post a conjunctival graft to minimise scarring?
When should this be done?
Corticosteroid
Well after healing
Why would a pedicle flap be used over an advancement flap?
Pedicle flap can reach the central cornea and are better for larger defects
What can be used to reform the anterior chamber?
Balanced salt solution
Air bubble
Viscoelastics
Which 2 which have caused a corneal laceration produce a more intense post operative uveitis?
Metal
Wood
Cat claw
claw and wood
What is the difference between penetrating v perforating?
Which is likely to have fibrin in the anterior chamber/ cornea?
Which is more likely to cause dyscoria?
Penetrating- intracorneal FB embedded in stroma
Perforating- intracorneal FB partially in the cornea and protruding in to the anterior chamber
Perforating
Perforating
What is the main cause of long term problems with a FB?
Prognosis?
If the anterior lens capsule is damaged.
Can cause uncontrollable phacoclastic uveitis, poor prognosis!
Roughly what at depth of the cornea in a keratectomy should a graft/ CCT be used?
1/2-2/3
Should drops or ointment be used if there is intraocular involvement?
Drops
When performing aqueocentesis what size needle is used?
How much aqueous humour is aspirated?
23-26g
0.1-0.3mls
What is the treatment for lens luxation extraction? Intra or extracapsular extraction?
Intracapsular extraction
How is cataract extraction performed?
Phacoemulsification
Or extracapsular extraction
What is this? Castroviejo spring action scissors Stevens tenotomy scissors Landolt enucleation scissors Metzenbaum scissors Ribbon scissors
Use?
Enucleation
Eyelid surgery
Cornea/ conjunctiva set
Metzenbaum scissors
Enucleation
What is this? Castroviejo spring action scissors Stevens tenotomy scissors Landolt enucleation scissors Metzenbaum scissors Ribbon scissors
Use?
Enucleation
Eyelid surgery
Cornea/ conjunctiva set
Landolt enucleation scissors
Encucleation
What is this? Castroviejo spring action scissors Stevens tenotomy scissors Landolt enucleation scissors Metzenbaum scissors Ribbon scissors
Use?
Enucleation
Eyelid surgery
Cornea/ conjunctiva set
Stevens tenotomy scissors
All
What is this? Allis tissue forcep Crile artery forcep Adson thumb forcep Bennet cilia forcep
Use?
Enucleation
Eyelid surgery
Cornea/ conjunctiva set
Adson thumb forcep
Eyelid surgery, enucleation
What is this? Castroviejo spring action scissors Stevens tenotomy scissors Landolt enucleation scissors Metzenbaum scissors Ribbon scissors
Use?
Enucleation
Eyelid surgery
Cornea/ conjunctiva set
Ribbon scissors straight blunt/blunt
Eyelid surgery
What is this? Castroviejo spring action scissors Stevens tenotomy scissors Landolt enucleation scissors Metzenbaum scissors Ribbon scissors Westcott tenotomy scissors
Use?
Enucleation
Eyelid surgery
Cornea/ conjunctiva set
Westcott tenotomy scissors
Cornea/ conjunctiva surgery
What type of forcep is this? Plain dissecting forcep Fixating forcep - bishop Harman Bennett Cilia forcep Wells artery forcep Colibri forcep Harms tying forcep
Bishop Harman fixation forcep
What type of forcep is this? Plain dissecting forcep Fixating forcep - bishop Harman Bennett Cilia forcep Wells artery forcep Colibri forcep Harms tying forcep
Plain dissecting forcep
What type of forcep is this? Plain dissecting forcep Fixating forcep - bishop Harman Bennett Cilia forcep Wells artery forcep Colibri forcep Harms tying forcep
Bennett cilia forcep
What type of forcep is this? Plain dissecting forcep Fixating forcep - bishop Harman Bennett Cilia forcep Wells artery forcep Colibri forcep Harms tying forcep
Colibri forcep
What type of forcep is this? Plain dissecting forcep Fixating forcep - bishop Harman Bennett Cilia forcep Wells artery forcep Colibri forcep Harms tying forcep
Harms tying forcep
