Ophthalmology Instruments

August 29, 2017 | Author: Abialbon Paul | Category: Surgical Suture, Cornea, Sensory Organs, Human Head And Neck, Ophthalmology
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Short Description

These are the common instruments used in ophtlalmology. Questions on these are asked in the exams for undergraduates....


Wire speculum Used to retract lid and hold eye open in 1.Both intraocular and extraocular surgery 2.Removal of conjunctival and corneal foreign body 3.Cauterisation of corneal vessels 4.Examination of patient with blepharospasm

Superior rectus forceps • Used to hold the superior rectus while placing bridle suture

Conjunctival scissors • A spring action scissor with curved end and large blades • Used for peritomy

Bard parker knife • To load no.15 blade with round tip for corneoscleral groove in ECCE and first step in triplanar incision of SICS

Cystitome • Used in anterior capsulotomy and capsulorrhexis

Corneoscleral scissors • Spring action scissor • Used to enlarge corneoscleral incision for ECCE

Fine cannula • For hydrodissection and intraocular irrigation using balanced salt solution.

Iris repositor 1.To reposit iris in any intraocular surgery 2.To break synechiae at the pupillary margin

Lens hook 1.To apply pressure at 6 ‘o clock position over the limbus 2.Can be used as a muscle hook

Needle holder 1. Spring action 2. Used to pass sutures in conjunctiva, cornea, sclera and extraocular muscles 3. Castoviejo’s-used in extraocular muscle surgery

Corneoscleral forceps • Toothed forceps • Used to hold cornea and sclera during corneoscleral suturing

McPherson’s forceps 1.Used in tying suture 2.Used to hold superior haptic of IOL during placement 3.Used to tear off anterior lens capsule during ECCE

Vanna’s scissors 1. To cut 10 - 0 nylon sutures 2. To cut anterior lens capsule in ECCE 3. To cut the iris tissue during trabeculectomy 4. For sphincterotomy 5. To perform iridectomy 6. To cut pupillary membrane and lamellar corneal tissue

Punctum dilator • To dilate punctum and canaliculi during syringing, probing, DCR, DCT.

CAT’S PAW RETRACTOR 1.Fork like instrument with terminal tent inward 2.Used to retract skin in lacrimal sac and lid surgery

Lacrimal sac dissector and curette • For blunt dissection of lacrimal sac during lacrimal sac surgery • Curetting remnants of lacrimal sac during daryocystectomy.

Chisel and hammer 1.Chisel is used to cut bone in DCR and orbitotomy 2.Used to hammer the chisel

Periosteum elevator • Used to elevate periosteum in DCR

Bone punch Used to enlarge bony opening in DCR by punching bone from margins of opening

Chalazion clamp • To fix the chalazion and achieve hemostasis during incision and curettage

Chalazion curette 1.Small cup with sharp margins attached to a narrow handle 2.Used to scoop out contents of a chalazion

Optic nerve guide • Used to engage the optic nerve during enucleation

Optic nerve cutting scissors • Scissor with curved ends. • Used during enucleation for cutting optic nerve.

Descemarre’s lid retractor 1. To retract lids for examination of eyeball in children, blepharospasm, swelling of eyelids and chemosis 2. Removal of corneoscleral sutures 3. Removal of corneal foreign body 4. Double eversion of upper eyelid

Metal cannula • Fine canula 27G or 30 G • Used 1. To form anterior chamber 2. For hydro-dissection 3. For aspirating air, lens matter (j-shaped cannula)

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