Objective vs subjective vault measurement after myopic implantable collamer lens implantation.
OBJECTIVE
To evaluate the relationship between subjective measurements of vault and objective values measured with Visante optical coherence tomography (OCT) in eyes receiving an implantable contact lens (ICL) for myopia correction.


METHODS
Observational cross-sectional study.


METHODS



METHODS
Fernández-Vega Ophthalmological Institute, Oviedo, Spain.


METHODS
Four hundred and fifty-two eyes from 246 patients were elected to be implanted with a Visian ICL V4 (STAAR Surgical Inc, Monrovia, California, USA).


METHODS
Subjective and objective measurements of vault after implantation of ICL.


METHODS
Subjective vault classified in 5 levels assessed using an optical section during slit-lamp examination. Objective vault was measured with Visante OCT (Carl Zeiss Meditec Inc, Dublin, California, USA).


RESULTS
Average values of objective and subjective vault were 414 +/- 228 microm and 2.1 +/- 1.0, respectively and both parameters were highly correlated (r = 0.82; P < .001). Differences in average objective vault were statistically significant among the 5 groups of subjective vault (P < .001). Subjective vault 0 corresponded to a mean OCT value of 62 +/- 49 microm with 99% confidence interval (CI) [38; 86] microm; eyes with vault 1 to 203 +/- 93 microm with 99% CI [176; 230] microm; eyes with vault 2 to 402 +/- 131 microm with 99% CI [378; 425] microm; eyes with vault 3 to 594 +/- 146 microm, 99% CI [554; 633] microm; and vault 4 to 794 +/- 182 microm with 99% CI [713; 875] microm.


CONCLUSIONS
Subjective and objective values of vault are highly correlated. In 99% of cases within the CI, objective values for eyes subjectively classified within a certain level vary within a narrow interval (+/-25 to 80 microm) around the mean value, and this interval is characteristic of each subjective level.
Alfonso
José F
JF
Fernández-Vega Ophthalmological Institute, University of Oviedo, Oviedo, Spain. j.alfonso@fernandez-vega.com
Lisa
Carlos
C
Palacios
Ana
A
Fernandes
Paulo
P
González-Méijome
José M
JM
Montés-Micó
Robert
R
D000293:Adolescent; D000328:Adult; D001699:Biometry; D001837:Body Weights and Measures; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D007908:Lens, Crystalline / Q000033:anatomy & histology*; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000601:surgery*; D054120:Phakic Intraocular Lenses; D041623:Tomography, Optical Coherence; D055815:Young Adult