Abstract • A new technique for studying the anatomy of the lens and other anterior chamber structures in human eyes obtained post mortem is described. An oblique or side view is achieved by creating a uveoscleral window. This provides a clear three-dimensional view of such structures as the crystalline lens, zonular apparatus, and ciliary body. The crystalline lens is shown to be approximately 4.5 mm thick and 9.5 mm in diameter. The equator of the lens is 0.2 to 0.3 mm from the center of the ciliary body. After removal of lens substance, the capsular bag collapses, its thickness approaches zero, and the total diameter increases to 10.5 mm. Filling of the capsular bag with a viscoelastic material restores the configuration of the lens to its original state. This technique is also useful for demonstrating the dynamics of surgical procedures during cataract operation. References 1. Klintworth GK, Bishop C. Gross examination and photography: a technique for studying lenticular structure in enucleated eyes . Arch Ophthalmol . 1967;779:249-251.Crossref 2. Miyake K, Miyake C. Intraoperative posterior chamber lens haptic fixation in the human cadaver eye . Ophthalmic Surg . 1985;16:230-236. 3. Apple DJ, Lim ES, Morgan RC, et al. Preparation and study of human eyes obtained postmortem with the Miyake posterior photographic technique . Ophthalmology . 1990;97:810-816.Crossref 4. Zirm ME. The SFVT surgical system . Eur J Implant Surg . 1990;2:169-177.Crossref 5. Brown N. Photographic investigation of the human lens and cataract . Surv Ophthalmol . 1979;23:307-314.Crossref 6. Assia EI, Apple DJ. Side-view analysis of the lens, II: positioning of intraocular lenses . Arch Ophthalmol . 1992;110:94-98.Crossref 7. Van Halpen GWHM. A correlation matrix of optical elements and age of the human eye . Exp Eye Res . 1978;26:573-579.Crossref 8. Marshal J, Beaconsfield M, Rothery S. The anatomy and development of the human lens and zonules . Trans Ophthalmol Soc U K . 1982;102:423-440. 9. Dalziel CC, Egan DJ. Crystalline lens thickness changes as observed by pachometry . Am J Optom Physiol Optics . 1982;59:442-447.Crossref 10. Markowitz SN, Morin JD. The ratio of lens thickness to axial length for biometric standardization in angle closure glaucoma . Am J Ophthalmol . 1985;99:400-402. 11. Worgul BV. Lens . In: Jakobiec FA, ed. Ocular Anatomy, Embryology and Teratology . New York, NY: Harper & Row Publishers Inc; 1982:331-353. 12. Rohen JW. Scanning electron microscopic studies of the zonular apparatus in human and monkey eyes . Invest Ophthalmol Vis Sci . 1979;18:133-144. 13. Streeten BW. The nature of the ocular zonule . Trans Am Ophthalmol Soc . 1982;80:832-854. 14. Galand A, Bonhomme L, Collee M. Direct measurement of the capsular bag . Am Intraocul Implant Soc J . 1984;10:475-476.Crossref 15. Richburg FA, Sun HS. Size of the crushed cataractous capsule bag . Am Intraocul Implant Soc J . 1983;9:333-335.Crossref 16. Coonan P, Fung WE, Webster RG Jr, Allen NW Jr, Abbott RL. The incidence of retinal detachment following extracapsular cataract extraction: a ten-year study . Ophthalmology . 1985;92:1096-1101.Crossref 17. Jaffe NS, Clayman HM, Jaffe MS. Retinal detachment in myopic eyes after intracapsular and extracapsular cataract extraction . Am J Ophthalmol . 1984;97:48-52. 18. Assia EI, Blumenthal M, Apple DJ. ECCE with capsulorhexis, hydrodissection and viscoextraction. Presented at Annual Meeting of the American Academy of Ophthalmology; October 28-November 1,1990; Atlanta, Ga.
Archives of Ophthalmology – American Medical Association
Published: Jan 1, 1992