INSTRUMENTS
Spotters
Wire speculum
• TO KEEP EYELIDS APART
during
• Cataract and glaucoma surgeries
• Squint & pterygium sx
• Enucleation and evisceration
• Removal of fb corneal , conjunctival
• Examination of eye in blepharospasm
Forceps
PLAIN FORCEPS Tip of
Plain forceps
• Simple forceps with no teeth
• Serration is present
• To hold the conjunctiva
• To tie sutures
• To hold skin in eyelid surgery
• To hold scleral flap in trabeculectomy
• To hold nasal mucosal flap in DCR operation
SUPERIOR RECTUS HOLDING FORCEPS
• TOOTHED FORCEPS
• S shaped double curve near tip
• To hold superior rectus muscle while passing a bridle suture
• To stabilise eyeball during cataract, glaucoma sx
Tip of superior rectus-
-holding forceps
IRIS FORCEPS
• To catch iris during iridectomy in cataract and glaucoma sx
• Excision for iris prolapse
• Tumors
Tip of globe fixation
forceps
Suture tying forceps :
Tip profile of suture tying
forceps
Hoskin's / Lim's forceps :
Artery forceps
• Blunt tip ,stout SCISSORS LIKE configuaration
• Multiple straight grooves near tip
• Locking mechanism near ringed end
• Catch bleeding vessels during sx
• To hold skin and muscle stay suture
• To hold gauze pieces while packing socket after enucleation & exentration
KERATOME 2.8 mm
• Diamond shaped blade
• Sharp apex
• Twp cutting edges
• Valvular corneal incision for entry into AC in SICS , ECCE
Tip profile of
Keratome
CRESCENT KNIFE
•BLUNT TIP • BEVEL UP KNIFE • CUT-SPLITTING ACTION @
TIP & SIDES
• to make tunnel incision in sclera & cornea for phacoemulsification, SICS ,
sutureless trabeculectomy.
Tip of crescent knife
CORNEAL SCISSORS
• Fine curved scissors
• to enlarge corneal /corneo scleral incision for intracap&extracaps sx
• Enlarge corneal incision in keratoplasty sx
• For cutting and undermining conjunctiva in various operations.
Tip of corneal-
-scissors
VANNAS SCISSORS
• DELICATE SCISSORS • SMALL CUTTING BLADES
• CUTTING ANTERIOR CAPSULE OF LENS IN CATARCT SX
• Cutting inner scleral flap in trabeculectomy
• Pupillary sphincterotomy
Tip of vannas
scissors
BARRAQUER’S NEEDLE HOLDER
•CURVED TIP • NO LOCKING • JAW IS SERRATED TO HOLD
NEEDLE FIRMLY
• USED for passing sutures in conjunctiva , cornea , sclera and extra ocular
muscles
Tip of needle holder
CASTROVIEJO CALLIPER
• TO take measurements during squint, ptosis ,
• retinal detachment ,
• For iridectomy
• Cutting pupillary membrane.
CHALAZION CLAMP
•TWO LIMBS LIKE FORCEPS •
CLAMPED WITH SCREW
• flat disc on SKIN SIDE
• ring on CONJUCTIVAL SIDE of chalazion
• TO FIX CHALAZION AND ACHIEVE HEMOSTATSIS during incision &
curettage
WIRE VECTIS
• Loop attached to metal handle
• To remove subluxated lens , anterior dislocated lens in icce
• And nucleus in ecce
TWO WAY IRRIGATION & ASPIRATION
CANNULA
• SIMCOE ‘S
• for irrigation and aspiration of lens matter in ecce
• Aspiration of hyphaema
IRIS REPOSITOR
• BLUNT EDGES & TIP
• to reposit iris in anterior chamber.
• To break synechiae at pupillary margin.
SINSKEY HOOK / IOL DIALER
• FINE & STOUT WITH BENT TIP
• To dial PMMA non foldable IOL for proper positioning in bag or sulcus
• To manipulate nucleus in phaco
Tip of sinskey hook
CHALAZION SCOOP
• SMALL CUP WITH SHARP MARGINS
• to scoop out contents of chalazion during incision & curettage .
PUNCTUM DILATOR-nettleship’s
• Conical pointed tip
• dilate the punctum and canaliculus
• Syringing
• Probing
ENUCLEATION SPOON
•SPOON SHAPED INSTRUMENT WITH CENTRAL CLEAVAGE •
OPTIC NERVE GUIDE
• To engage optic nerve during enucleation.
IOL
PREDNISOLONE
• USES:
• uveitis
• Scleritis
• Allergic Conjuctivitis
• Allergic keratitis
• After intra ocular surgery
• SIDE EFFECTS
• injudicious use may lead to
• Cataract
• Glaucoma
• Activation of infection – herpetic, fungal , bact keratitis.
• Dry eye
TIMOLOL
• Non selective beta blocker
• 0.5% eyedrops
• Timolol maleate
• Used in open angle glaucoma
• Decreases iop by reducing aqueous secretion
• C/I in bronchial asthma & heart blocks.
Pin hole Occluder
Concave spherical:
•Image distortion is not seen when lens is
rotated around its optical axis.
•Lens is thick at periphery when compared
with thickness of the centre.
•Object size is minimised.(object seen
through lens appear smaller when
compared to their original size).
•When the lens is moved, the object seen
through it moves in the same direction as
the lens.
Convex spherical:
•Image distortion is not seen when lens is
rotated around its optical axis.
•Lens is thick at centre when compared
with thickness of the periphery.
•Object size is maximised.(object seen
through lens appear larger when compared
to their original size).
•When a convex lens is moved, the object
seen through it moves in the opposite
direction to the lens.
Concave cylindrical:
•Image distortion is seen when lens is
rotated around its optical axis.
•Lens is thick at periphery when
compared with thickness of the centre.
•when lens is moved up and down or
sideways, the objects will move with the
lens only in one direction.
Convex cylindrical:
•Image distortion is seen when lens is
rotated around its optical axis.
•Lens is thick at centre when compared
with thickness of the periphery.
•when lens is moved up and down or
sideways, the objects will move opposite
to the lens only in one direction.
