Corneas
Ophthalmology · Topic 4
Source: NMC CBME Curriculum 2024 · Volume III · Ophthalmology · Topic 4 · combined PDF page 415
Practice questions
- In the 2026 systematic review of PRK or transepithelial PRK in thin corneas, what central corneal thickness criterion defined the population of interest?
- Which description best characterizes the evidence base in the systematic review of PRK/transPRK in thin corneas?
- What was the sensitivity-analysis pooled estimate for the safety index reported in the thin-cornea PRK meta-analysis?
- Which value best represents the pooled efficacy index after sensitivity analysis in the thin-cornea PRK review?
- The pooled mean postoperative change in corrected distance visual acuity (CDVA) after PRK/transPRK in the thin-cornea review was closest to which value?
- No included study reported postoperative corneal ectasia after PRK/transPRK in the thin-cornea review. What is the most appropriate interpretation?
- What minimum corneal thickness does the conventional Dresden corneal cross-linking protocol require to protect the endothelium from ultraviolet injury?
- What is the defining strategy of the ELZA-sub400 approach to cross-linking in ultrathin corneas?
- In the ELZA-sub400 protocol description, what safety margin is maintained above the endothelium?
- A prospective study cited in the review evaluated the ELZA-sub400 approach in 39 eyes. Which corneal-thickness range was reported?
- Which result was reported for the 39-eye prospective study of the ELZA-sub400 protocol?
- Which statement best describes the biomechanical factor emphasized as central to keratoconus in the Brillouin microscopy review?
- What physical signal does Brillouin microscopy analyze to assess corneal mechanical properties?
- Which pattern of corneal mechanical change has been described in early ex vivo Brillouin microscopy studies?
- Which Brillouin imaging finding has been reported in subclinical keratoconus compared with normal controls?
- What limitation should be considered when interpreting proposed Brillouin microscopy applications in clinical corneal care?
- A patient has had one or more failed full-thickness donor corneal grafts. What did the Cochrane review find regarding artificial versus donor corneas for repeat transplantation?
- Given the absence of controlled trials comparing artificial and donor corneas after graft failure, which conclusion is best supported?
- Which statement about corneal transplantation and advanced corneal blindness is supported by the 2026 review of transplantation and eye banking?
- Which set of procedures is specifically named in the review as advanced keratoplasty methods?
- Which statement about advances in corneal transplantation is reported in the review?
- Which challenge is identified as affecting the work of eye banks in reducing corneal blindness?
- Which combination best describes the components used to generate bioartificial corneas in tissue-engineering approaches?
- Which option lists biomaterials identified in the review as scaffolds used in bioartificial corneal research?
- Which statement best captures the principal translational bottleneck described for bioartificial corneas?
- Which statement about the human bioartificial cornea NANOULCOR is reported in the tissue-engineering review?
- Why has terahertz technology been explored for corneal assessment?
- Which group of potential assessment targets is specifically described for terahertz technology in corneal research?
- A researcher proposes routine clinical use of terahertz imaging for corneal hydration. Which conclusion is most consistent with the systematic review?