Should the pupil be used as a fixed reference for instrument alignment?

References 

1. Saitoh K, Yoshida K, Hamatsu Y, Tazawa Y. Changes in the shape of the anterior and posterior corneal surfaces caused by mydriasis and miosis; detailed analysis. J Cataract Refract Surg. 2004;30:1024–1030
   • Abstract
   • Full Text
   • Full-Text PDF (134 KB)
   • CrossRef
2. Mandell RB. Contact Lens Practice; Hard and Flexible Lenses. 2nd ed.. Springfield, IL: Thomas; 1974;57–80
3. Le Grand Y, El Hage SG. Physiological Optics. New York, NY: Springer-Verlag; 1980;85–86
4. Enoch JM, Hope GM. An analysis of retinal receptor orientation. IV. Center of the entrance pupil and the center of convergence of orientation and directional sensitivity. Invest Ophthalmol. 1972;11:1017–1021
   • MEDLINE
5. Yang Y, Thompson K, Burns SA. Pupil location under mesopic, photopic, and pharmacologically dilated conditions. Invest Ophthalmol Vis Sci. 2002;43:2508–2512
   • MEDLINE
6. Schachar RA. Effect of accommodation on the cornea. [letter] J Cataract Refract Surg. 2004;30:531–532
   • Full Text
   • Full-Text PDF (55 KB)
   • CrossRef
7. Kirkwood BR, Sterne JAC. Essential Medical Statistics. 2nd ed.. Malden, MA: Blackwell; 2003;61–63
8. Indrayan A, Sarmukaddam SB. Medical Biostatistics. New York, NY: Marcel Dekker; 2001;505–511
9. Bland JM, Altman DG. Statistical methods for assessing agreement between two methods of clinical measurement. Lancet. 1986;1:307–310
   • CrossRef