Ophthalmology Exam Review Quiz

Ophthalmology Exam Review

• The normal intraocular pressure (IOP) is 10-20 mmHg and the total amount of Aqueous humour in the eye is 0.2-0.5 ml.
• The human eye has about 6 million cones for high threshold vision and about 120 million rods for low threshold vision.
• Aqueous humor is secreted by the ciliary body epithelium and drains through the trabecular network, Canal of Schlemm, and episcleral venous system.
• The optic nerve conducts sense of vision from the eye to the visual center.
• Tears drain to the nasal cavity from the nasolacrimal duct through the inferior and superior lacrimal canaliculi.
• The components of Aqueous humor include glucose, water, and oxygen, but not red blood cells.
• The middle layer of the eye consists of the choroid, ciliary body, and iris, but not the channel of Schlemm.
• Atropine causes pupillary dilation and cycloplegia, but does not increase IOP.
• Malate hydrochloride eye drops decrease IOP in glaucoma and are beta 1 receptors.
• Local anesthesia is preferred for pterygium, dacryocystorhinostomy, and strabismus surgery, but not for penetrating eye injury or keratoplasty.
• The common technique of anesthesia for strabismus surgery is regional anesthesia, not TIVA or general anesthesia.
• Keratoplasty is a corneal transplant surgery that can alleviate pain, provide tectonic support, eliminate infection, amplify refractive error, and improve visual acuity.

Ophthalmology Quiz Summary

• The normal intraocular pressure is 10-20 mmHg and the total amount of Aqueous humour in the eye is 0.2-0.5 ml.
• Rods are high threshold receptors for light and there are approximately 120 million in each eye.
• Aqueous humor is secreted from the ciliary body by epithelium and does not contain RBCs.
• The optic nerve conducts the sense of vision from the eye to the visual center.
• Tears drain to the nasal cavity from the nasolacrimal duct via the inferior and superior lacrimal canaliculi.
• Ketamine should be avoided during induction of anesthesia in a patient with acute eye trauma.
• Atropine's ocular effects include mydriasis and cycloplegia but do not increase IOP.
• Malate hydrochloride eye drops decrease IOP in glaucoma.
• The middle layer of the eye consists of the choroid, ciliary body, and iris but not the canal of Schlemm.
• Episcleral venous pressure is not a component of intraocular pressure, which is maintained by the aqueous and vitreous humor.
• Keratoplasty involves replacing the host cornea with a healthy donor cornea to alleviate pain, provide tectonic support, eliminate infection, and improve visual acuity for conditions such as congenital corneal degenerations, corneal scars, and keratoconus.
• Ectropion and entropion are eyelid disorders that cause discomfort, irritation, and lacrimation, but only entropion causes photophobia and epiphora. Cicatricial, congenital, paralytic, and spastic are specific categories of these disorders.

Are you preparing for an ophthalmology exam? This quiz will test your knowledge of the anatomy and physiology of the eye, as well as common ophthalmic procedures and medications. From the components of aqueous humor to the different types of anesthesia used in eye surgery, this quiz covers a range of essential topics for any aspiring eye specialist. Sharpen your skills and review key concepts with this ophthalmology exam review quiz.