Eye Drugs

Question 1

what provides significantly higher ocular tissue concentration as compared to systemic route of administration

Answer 1

subconjunctival injection

Question 2

five complications of subconjunctival injection

Answer 2

1. conjunctival scarring
2. granuloma
3. irritation and pain at the site
4. necrosis
5. subconjunctival hemorrhage
6. globe penetration
7. intraocular administration

Question 3

what is the commonly used route of administration of local anesthetics for ophthalmic surgery

Answer 3

subtenon’s injection

Question 4

complication of subtenon’s injection

Answer 4

1. pain
2. pseudoptosis
3. subconjunctival hemorrhage
4. swelling

Question 5

use of subtenon injection

Answer 5

local anaesthesia admin for most opthalmic surgeries and injection of steroids for cystoid macular edema

Question 6

use of retrobulbar injection

Answer 6

it is used for administrating alcohol or chlorpromazine in the treatment of painful blind eyes.

Question 7

complication of retrobulbar injections

Answer 7

optic nerve compression due to injection of the drug inside the meningeal covering of the nerve. this may lead to primary optic atrophy.

Question 8

other complications of retrobulbar injections

Answer 8

stimulation of oculocardiac reflex

puncture of globe

Inadvertent intravascular and subdural injection

brain stem anesthesia.

Question 9

complications of peribulbar injection

Answer 9

periorbital ecchymosis and conjunctival chemosis

Question 10

advantages of intracameral injection

Answer 10

1. pupillary dilatation
2. anaesthesia for surgical procedures
3. prevention of intraocular infection
   4, avoid repeated admin
   5, reduce corneal surface toxicity ass, with topical admin