Ocular dominance and visual function testing

D Lopes-Ferreira, H Neves, A Queiros, M Faria-Ribeiro, S C Peixoto-de-Matos, J M González-Méijome, D Lopes-Ferreira, H Neves, A Queiros, M Faria-Ribeiro, S C Peixoto-de-Matos, J M González-Méijome

Abstract

Purpose: To show the distribution of ocular dominance as measured with sensory and eye sighting methods and its potential relationship with high and low contrast LogMAR visual acuity in presbyopic subjects.

Method: Forty-four presbyopes (48.5 ± 3.5 years) participated in this study. Ocular dominance was determined by eye sighting (hole-in-card) and sensorial (+1.50 D lens induced blur) methods. According to the dominance detected with each method (RE: right eye or LE: left eye), patients were classified in dominance type 1 (RE/RE), type 2 (RE/LE), type 3 (LE/RE) and type 4 (LE/LE).

Results: Baseline refractive error (MSE) was RE:-0.36 ± 1.67 D and LE:-0.35 ± 1.85 D (P = 0.930). RE was the dominant eye in 61.4% and 70.5% of times as obtained from sensorial and sighting methods, respectively. Most frequent dominance was of type 1 (52.3%), in this case the RE showed statistically significant better distance low contrast LogMAR VA (0.04 LogMAR units) compared to the LE (P < 0.05).

Conclusions: The dominance was more frequent in RE in this sample. The eye sighting and sensorial methods to define ocular dominance agreed in more than half of cases. Amount of MSE was not significantly different between dominant and non-dominant eye. But in case of right dominance, the RE presented better distance low contrast VA compared to the LE.

Figures

Figure 1
Figure 1
Mean best corrected visual acuity in distance vision and standard deviation for every dominance type (1 to 4): high contrast (100%), low contrast (10%) for right (RE) and left (LE). The values of VA are represented in LogMAR units. *P < 0.05 in comparison.

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Source: PubMed

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