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Imene SALAH-MABED, Alain SAAD, HELENE ROUGER, Damien Gatinel; EXPLORING PUPIL DYNAMICS AND BIOMETRY IN EYES UNDERGOING CATARACT SURGERY. Invest. Ophthalmol. Vis. Sci. 2018;59(9):4135.
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© ARVO (1962-2015); The Authors (2016-present)
To evaluate pupil diameter dynamics and anterior segment changes in eyes undergoing cataract surgery.
Pupillometry with OPD-Scan III ®, (Nidek, Gamagori, Japan) was performed in 95 eyes of 64 patients scheduled for cataract surgery. High-resolution images were obtained using the infrared-sensitive camera under mesopic and photopic conditions and pupil diameters were analyzed preoperatively and at one and three months after cataract surgery. Pachymetry, magnitude of the corneal surgically induced astigmatism, axial length and anterior chamber depth were obtained using Pentacam® AXL tomographer and IOL master optical biometer (Carl Zeiss Meditec AG, Jena, Germany) and analyzed preoperatively and one and three months postoperatively.
The mean preoperative and three months postoperative mesopic pupil’s diameters were 4.7 ± 0.8 mm and 4.4 ± 0.7 mm, respectively. The mean preoperative and three months postoperative photopic pupil diameters were 3.3 ± 0.6 mm and 3.1 ± 0.5 mm, respectively. The mean preoperative, one month and three months postoperative anterior chamber depths were of 3.1 ± 0.4 mm, 4.4 ± 0.5 mm and 4.6 ± 0.4 mm respectively. The mean preoperative, one month and three months postoperative axial lengths were of 23.99 ± 1.34 mm, 23.93 ± 1.34 mm and 23.91 ± 1.34 mm respectively. These differences were all significant (paired t test, P <0.05). The correlations between preoperative pupil diameters and 3 months post-operative diameters were respectively of r = 0.852, P< 0.0001 and 0.717, P<0.0001 in mesopic and photopic conditions.
The mesopic and photopic mean pupil diameters decreased three months after cataract surgery in the whole sample of eyes, while the anterior chamber depth and the axial length increase. As a consequence, the preoperative determination of the pupil diameter has clinical relevance for the selection of IOL design.
This is an abstract that was submitted for the 2018 ARVO Annual Meeting, held in Honolulu, Hawaii, April 29 - May 3, 2018.
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