[Cup-to-disk ratio asymmetry: diagnostic value in glaucoma].
OBJECTIVE
To assess visual field abnormalities in suspected glaucoma patients showing evident asymmetry in cup-to-disk ratio.


METHODS
Twenty two hypertensive eyes in 11 subjects evidencing lateral differences in cup-to-disk ratio of more than 2/10 were included in the study. Conventional and short wavelength automated perimetry (SWAP) was performed with a Humphrey field analyser. A retinal nerve fiber layer (RNFL) study was also performed.


RESULTS
Differences in IOP were 1.23 mmHg (p<0.05). No differences were evidenced in conventional automated perimetry between both eyes. Average sensitivity (SWAP) showed significantly lower (p<0.05) in those ayes with greater cup-to-disk ratio. RNFL showed a higher rate of defects in eyes with a higher cup-to-disk ratio.


CONCLUSIONS
Lateral differences in cup-to-disk ratio indicate structural glaucomatous damage which is related to IOP levels. Associated functional loss was evidenced with SWAP (Arch Soc Esp Oftalmol 2002; 77: 17-22).
Polo Llorens
V
V
Larrosa Poves
J M
JM
Pablo Júlvez
L E
LE
Pinilla Lozano
I
I
Marcuello Melendo
B
B
Fernández Larripa
S
S
Honrubia López
F M
FM
D000328:Adult; D015875:Anisocoria / Q000175:diagnosis*; D005260:Female; D005901:Glaucoma / Q000175:diagnosis*; D006801:Humans; D007499:Iris Diseases / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D058609:Visual Field Tests / Q000379:methods*