Description : A young patient with sudden painless loss of vision, with systolic murmur and ocular examination reveals a cherry red spot with clear AC, the likely diagnosis is: a. Central Retinal Artery Occlusion b. Central Retinal Vein Occlusion c. Diabetes Mellitus d. Branch Retinal Vein Occlusion
Last Answer : ANSWER: A
Description : A patient of old standing diabetes mellitus noticed sudden muscae volitanes. On examination, the red reflex was dim, with no details of fundus could be seen. He might have: a. Non proliferative diabetic retinopathy b. Cystoid macular edema c. Vitreous hemorrhage d. Central retinal vein occlusion
Last Answer : ANSWER: C
Description : A male patient 30 years old with visual acuity of 6/6 in both eyes. Twelve hours ago he presented with drop of vision of the left eye. On examination, visual acuity was 6/6 in the ... : a. Raised intra cranial pressure b. Raised ocular tension c. Central retinal artery occlusion d. Optic neuritis
Last Answer : ANSWER: D
Description : Occlusion of the lower nasal branch of the central retinal artery results in one of the following field defects: a. Lower nasal sector field defect b. Upper nasal sector field defect c. Upper temporal field defect d. Lower temporal sector field defect
Description : 100 days glaucoma is seen in: a. Central Retinal Artery Occlusion b. Branch Retinal Artery Occlusion c. Central Retinal Vein Occlusion d. Branch Retinal Vein Occlusion
Description : Night blindness is caused by: a. Central retinal vein occlusion b. Dystrophies of retinal rods c. Dystrophies of the retinal cones d. Retinal detachment
Last Answer : ANSWER: B
Description : Commotio retinae is seen in: a. Concussion injury b. Papilloedema c. Central retinal vein thrombosis d. Central retinal artery thrombosis
Last Answer : a
Description : Commonest lesion which hinders vision in diabetic retinopathy is: a. Macular oedema b. Microaneurysm c. Retinal hemorrhage d. Retinal detachment
Description : In retinal detachment, fluid accumulates between: a. Outer plexiform layer and inner nuclear layer. b. Neurosensory retina and layer of retinal pigment epithelium c. Nerve fiber layer and rest of retina. d. Retinal pigment epithelium and Bruch’s membrane.
Description : The following are true about ocular circulation: a. only 4% of the total blood supply to the eye goes to the retina b. the choroidal blood flow in normal people is ten times that of the grey mater ... and choroidal circulation d. a PaCO2 rise of 1 mm Hg induces a 3% rise in retinal blood flow
Last Answer : a PaCO2 rise of 1 mm Hg induces a 3% rise in retinal blood flow
Description : Neovascular glaucoma follows: a. Thrombosis of central retinal vein b. Acute congestive glaucoma c. Staphylococcal infection d. Hypertension
Description : The most common primary intraocular malignancy in adults is: a. Retinoblastoma b. Choroidal melanoma c. Squamous cell carcinoma of conjunctiva d. Iris nevus
Description : Regarding retinal metabolism: a. insulin is essential for the uptake of glucose by the retina b. anaerobic metabolism predominates c. the pigment retinal epithelium stores glycogen and supplies the need of the retina d. the demand of oxygen is met entirely by the central retinal artery
Last Answer : anaerobic metabolism predominates
Description : A 12 years old boy receiving long term treatment for spring catarrh, developed defective vision in both eyes. The likely cause is: a. Posterior subcapsular cataract b. Retinopathy of prematurity c. Optic neuritis d. Vitreous hemorrhage
Description : Retinal artery occlusion?
Last Answer : DefinitionRetinal artery occlusion is a blockage of the blood supply in the arteries to the retina -- the light-sensitive tissue in the back of the eye.Alternative NamesCentral retinal artery occlusion; ... of the two large blood vessels in the neck (carotid artery disease)Disorder of high
Description : The best treatment for amblyopia is: a. Orthoptic exercises b. Occlusion c. Surgery d. Best treat after age 10 years
Description : Homonymous hemianopia is due to lesion at: a. Optic tract b. Optic nerve c. Optic chiasma d. Retina e. Occipital cortex
Description : All the following associated open angle glaucoma include all the following except: a. Roenne’s nasal step b. Enlarged blind spot c. Generalized depression of isopters d. Loss of central fields e. Tubular vision
Description : Which is not found in papilloedema? a. Blurred vision b. Blurred margins of disc c. Cupping of disc d. Retinal edema
Description : Primary optic atrophy results from: a. Retinal disease b. Chronic glaucoma c. Papilledema d. Neurological disease
Description : Commonest cause of posterior staphyloma is: a. Glaucoma b. Retinal detachment c. Iridocyclitis d. High myopia
Description : The following are true: a. the ratio of rod to cone is about 20:1 b. there are more ganglion cells in the retina than photoreceptors c. the rod density is the highest nasal to the optic disc d. the retinal artery is the main supply of nutrients to the photoreceptors
Last Answer : the ratio of rod to cone is about 20:1
Description : Homonymous hemianopia is the result of a lesion in: a. Optic chiasma b. Retina c. optic tract d. Optic nerve
Description : Number of layers in neurosensory retina is: a. 9 b. 10 c. 11 d. 12
Description : Evisceration is: a. Excision of the entire eyeball b. Excision of all the inner contents of the eyeball including the uveal tissue c. Photocoagulation of the retina d. Removal of orbit contents
Description : True statements about EOG (electro-oculogram) include: a. the EOG light-peak to dark-trough ratio is reduced in central retinal vein occlusion b. the light peak of EOG is abnormal in Best' ... rise is produced by depolarization of the basal membrane of the retinal pigment epithelium d. all above
Last Answer : all above
Description : Sodium fluorescein: a. has a higher affinity for plasma protein than indocyanine green. b. does not leak from the choroidal vasculature. c. does not leak from normal retinal vasculature. d. emits light of longer wavelengths than the one it absorbs
Last Answer : does not leak from normal retinal vasculature.
Description : How long does retinal detachment laser surgery take to preform with the macula on?
Last Answer : Retinal detachment laser surgery takes about 10-15 minutes. Depending on the size of the tear, outpatient hospital sugery may be required. Depending on the type of pain that you are going through. The most common amount of time for the procedure is around two hours.
Description : As the nurse monitors the client, she notices a bright red spot on the dressings which measures 4cm in diameter. The nurse should initially do which appropriate nursing intervention? A. Change the ... C. Notify the clients surgeon of a potential hemorrhage D. Assess the presence of a drain
Last Answer : D. Assess the presence of a drain
Description : The hyaloid artery: a. arises from the dorsal ophthalmic artery b. communicates freely with the choroidal circulation throughout development c. regresses after birth d. Bergmeister's papillae is a remnant e. forms part of the vascular propria lenti
Last Answer : arises from the dorsal ophthalmic artery
Description : Retina is most sensitive at (a) optic disc (b) periphery (c) macula lutea (d) fovea centralis
Last Answer : (d) fovea centralis.
Description : Which one of the following statements is not correct? (a) Retinal is the light absorbing portion of visual photopigments. (b) In retina the rods have the photopigment rhodopsin while cones have three ... a derivative of vitamin C. (d) Rhodopsin is the purplish red protein present in rods only.
Last Answer : (c) Retinal is a derivative of vitamin C.
Description : Retinal vein occlusion?
Last Answer : DefinitionRetinal vein occlusion is a blockage in the blood supply from the retina -- the light-sensitive tissue in the back of the eye.Alternative NamesCentral retinal vein occlusion; Branch retinal vein ... in all or part of one eyeSigns and testsTests to evaluate the retina include:Color visionE
Description : Haemoglobin SC disease: a. is common amongst Afro-carribean people b. does not show sickle cells in the blood film. c. causes severe anaemia d. causes retinal vein occlusion
Last Answer : causes retinal vein occlusion
Description : After 48 hours of a cataract extraction operation, a patient complained of ocular pain and visual loss. On examination, this eye looked red with ciliary injection, corneal oedema and absent red ... a. Secondary glaucoma. b. Anterior uveitis. c. Bacterial endophthalmitis. d. Acute conjunctivitis
Description : When the patient who has undergone laryngectomy suffers wound breakdown, the nurse monitors him very carefully because he is identified as being at high risk for a) carotid artery hemorrhage. The ... poor wound healing and breakdown. d) pneumonia. Pneumonia is a risk for any postoperative patient.
Last Answer : a) carotid artery hemorrhage. The carotid artery lies close to the stoma and may rupture from erosion if the wound does not heal properly.
Description : what is causing my eastern red cedar needles to turn reddish brown in one spot on the tree?
Last Answer : it's some kind of bug..............try sevin..........read the directions to make sure you can use it on that kind of tree.............wear gloves, goggles, long ... , you need a commercial sprayer they are available at tractor supply or another farm store. you could ask your local forrester.
Description : Aluminium is (A) Silvery white in colour. (B) Yellow in colour. (C) Reddish in colour. (D) Pale yellow in colour.
Last Answer : (A) Silvery white in colour.
Description : Ptosis in Horner's syndrome, is due to paralysis of: a. Riolan's muscle b. Horner's muscle c. Muller's muscle d. The levator palpebral muscle e. Orbicularis oculi muscle
Description : A painful, tender, non itchy localized redness of the conjunctiva can be due to: a. Bulbar spring catarrh. b. Episcleritis. c. Vascular pterygium. d. Phlyctenular conjunctivitis.
Description : Phlycten is due to: a. Endogenous allergy b. Exogenous allergy c. Degeneration d. None of the above
Description : Which of the following would be expected following distal occlusion of the posterior cerebral artery? A. cerebellar ataxia B. contralateral hemiplegia C. dysarthria D. homonymous hemianopia E. palatal palsy
Last Answer : Ans: D
Description : An 80-year-old woman has a three month history of progressive numbness and unsteadiness of her gait. On examination, there is a mild spastic paraparesis, with brisk knee reflexes, ankle ... dorsal meningioma C. multiple sclerosis D. subacute combined degeneration of the cord E. tabes dorsalis
Last Answer : Ans: B
Description : Ticlopidine is recommended for the following except: A. To reduce neurological sequelae of stroke B. Transient ischaemic attacks C. To prevent occlusion of coronary artery bypass graft D. Intermittent claudication
Last Answer : A. To reduce neurological sequelae of stroke
Description : Purkinje's shift: a. refers to the transition of retinal sensitivity between photopic and scotopic vision b. refers to the shift in the spectral sensitivity of the human retina toward shorter wavelengths of light c. accounts for blue colour appearing brighter at dusk d. all above
Description : True statements about the retinal blood flow include: a. the retina receives 5% of total ocular blood flow b. the retinal blood flow is mainly under the sympathetic control c. the ... are impermeable to ascorbate d. the pericytes control the contractile activity of the retinal blood vessels
Last Answer : the pericytes control the contractile activity of the retinal blood vessels
Description : With regard to the blood retina barrier: a. the outer blood retina is formed by the retinal pigment epithelium cells and their junctions b. the blood retina barrier is typically defective in the ... fluid and anions from the extracellular space of the retina into the circulation d. all above
Description : In binocular vision: a. only points on the horopter fall on the corresponding retinal point b. points in front of the horopter will stimulate binasal retina c. points outside the horopter ... the periphery e. sensory fusion refers to the cortical integration of images perceived by the two eyes
Last Answer : only points on the horopter fall on the corresponding retinal point
Description : The following structures are of ectodermal origin: a. the retina and its retinal pigment epithelium b. iris stroma c. the sclera d. the ciliary muscle e. the corneal stroma
Last Answer : the retina and its retinal pigment epithelium
Description : The cells of the retinal pigment epithelium: a. are of mesenchymal origin b. are shorter at the fovea than else where in the retina c. have intracellular melanosomes d. regenerate visual pigment e. form the inner outer blood-retina barrier
Last Answer : have intracellular melanosome