Correlation between ocular parameters and amplitude of accommodation.
OBJECTIVE
To study the relationship between ocular parameters and amplitude of accommodation (AA) in the peri-presbyopic age group (35-50 years).


METHODS
Three hundred and sixteen right eyes of consecutive patients in the age group 35-50 years, who attended our outpatient clinic, were studied. Emmetropes, hypermetropes and myopes with best-corrected visual acuity of 20/20, J1 in both eyes were included. The AA was calculated by measuring the near point of accommodation. The axial length (AL), central anterior chamber depth (CACD) and lens thickness (LT) were also measured.


RESULTS
There was moderate correlation (Pearson's correlation coefficient r = 0.56) between AL and AA as well as between CACD and AA (r = 0.53) in myopes in the age group 35-39 years. In the other age groups and the groups taken as a whole, there was no correlation. In hypermetropes and emmetropes, there was no correlation between AA and the above ocular parameters. No significant correlation existed between LT and AA across different age groups and refractive errors.


CONCLUSIONS
There was no significant correlation between AA and ocular parameters like anterior chamber depth, AL and LT.
Abraham
Lekha Mary
LM
Department of Ophthalmology, Christian Medical College, Vellore, India. lekhaabraham@yahoo.com
Kuriakose
Thomas
T
Sivanandam
Viswanathan
V
Venkatesan
Nithya
N
Thomas
Ravi
R
Muliyil
Jayaprakash
J
D000065:Accommodation, Ocular; D000328:Adult; D000867:Anterior Chamber / Q000033:anatomy & histology / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012030:Refractive Errors / Q000473:pathology / Q000503:physiopathology; D014792:Visual Acuity