What is the primary goal of cataract surgery?
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Mastering this deck will enhance your understanding of essential ophthalmic surgeries, enabling accurate surgical planning, patient counseling, and recognition of procedural indications and complications—key skills for ophthalmologists and optometrists alike.
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|---|---|---|---|
| 1 | What is the primary goal of cataract surgery? |
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Basics of common surgeries like cataract extraction, LASIK, and vitreoretinal surgeries.
To remove the opacified natural lens (cataract) and replace it with an artificial intraocular lens (IOL) to restore clear vision. |
| Think of cataract as a 'clouded lens'; surgery clears the 'cloud' and replaces it. |
| 2 | Name the most common surgical approach for cataract extraction. | Phacoemulsification, which uses ultrasonic vibrations to emulsify the lens before removal. | Phaco = sound waves; think of emulsifying as turning the lens into a liquid. |
| 3 | What is LASIK and what condition does it primarily treat? | Laser-Assisted In Situ Keratomileusis (LASIK) is a refractive surgery that reshapes the cornea to correct myopia, hyperopia, and astigmatism. | LASIK = Laser reshaping of the 'cornea' for better focus. |
| 4 | Which layer of the cornea is primarily reshaped during LASIK? | The stroma, which constitutes about 90% of corneal thickness. | Stroma sounds like 'structure'; it's the main supporting layer targeted during reshaping. |
| 5 | What is the main purpose of vitrectomy surgery? | To remove the vitreous humor to treat retinal detachment, vitreous hemorrhage, or other vitreoretinal diseases. | Vitreous humor is the gel-like substance; removing it allows access to the retina. |
| 6 | List two common indications for a vitrectomy. | Retinal detachment and vitreous hemorrhage. | Think of 'detachment' or 'bleed' as conditions needing vitreous removal. |
| 7 | What is the primary surgical procedure for treating retinal detachment? | Pars plana vitrectomy combined with techniques like gas or silicone oil tamponade. | Pars plana approach; 'tamponade' supports reattachment. |
| 8 | Describe the key difference between extracapsular cataract extraction (ECCE) and phacoemulsification. | ECCE involves removing the lens nucleus in one piece through a larger incision, whereas phacoemulsification uses ultrasound to emulsify the lens through a small incision. | ECCE = larger cut, manual removal; Phaco = small cut, ultrasonic emulsification. |
| 9 | What are the advantages of femtosecond laser-assisted cataract surgery over traditional methods? | Increased precision in capsulorhexis, corneal incisions, and lens fragmentation, leading to potentially better outcomes and reproducibility. | Femtosecond laser = laser precision for key steps. |
| 10 | What complication can occur if the intraocular lens (IOL) is improperly centered after cataract surgery? | Astigmatism or visual aberrations such as glare and halos. | Centering affects the optical pathway—misalignment causes visual distortions. |
| 11 | Which surgical technique is commonly used to correct high astigmatism during cataract surgery? | Toric intraocular lens implantation or limbal relaxing incisions. | Toric IOLs are specially designed to correct astigmatism. |
| 12 | What is the primary goal of LASIK flap creation, and which instrument is most commonly used? | To create a corneal flap that allows access to reshape the underlying stroma; a microkeratome or femtosecond laser is used. | Flap = access point; instrument options include blade or laser. |
| 13 | Name a common complication specific to LASIK surgery. | Dry eyes, halos, glare, or ectasia (corneal thinning and bulging). | Ectasia resembles corneal 'bulging'—a serious complication. |
| 14 | In vitreoretinal surgery, what is the purpose of endolaser photocoagulation? | To create adhesions and seal retinal tears or treat diabetic retinopathy by cauterizing abnormal vessels or tissue. | Endolaser = laser inside the eye for sealing and fixing retinal issues. |
| 15 | What is the typical positioning of the patient during a pars plana vitrectomy? | Supine position (lying on back) to provide access to the posterior segment of the eye. | Positioning facilitates surgical access to the back of the eye. |
| 16 | What is the main difference between manual extracapsular cataract extraction and small-incision cataract surgery? | Manual ECCE involves a larger incision for lens removal, while small-incision cataract surgery (SICS) uses smaller incisions with techniques like phaco or manual extraction for faster healing. | Size of incision correlates with recovery speed. |
| 17 | Which surgical procedure is commonly performed for age-related macular degeneration with subretinal neovascularization? | Vitrectomy with anti-VEGF injections, or laser therapy in some cases. | Targeting abnormal vessels to prevent vision loss. |
| 18 | What is the role of preoperative imaging, such as OCT, in planning vitreoretinal surgeries? | To precisely locate retinal tears, detachments, or neovascular membranes, aiding surgical planning and prognosis. | OCT provides cross-sectional retinal images. |
| 19 | Name a common intraoperative complication during cataract surgery. | Capsular rupture or posterior capsule rupture, which can lead to vitreous loss and IOL dislocation. | Capsular integrity is crucial for IOL placement. |
| 20 | What is the primary purpose of intraoperative anterior chamber maintainer during cataract surgery? | To maintain chamber depth and stability, preventing collapse during surgery. | Keeps the space open for safe lens removal. |
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