Figure 2: (a) Symmetrical red glow of both eyes suggestive of straight eyed emmetropia (normal). (b) Upper crescents, larger in the left eye: interpretation is anisometropia (hyperopic): Actual refraction: RE: +3 D + 0.5 DC × 180, LE: +4.5 D + 0.5 DC × 180. (c) Inferior crescents, larger in the left eye: interpretation is anisometropia (myopic): RE: -3.0 D; LE: -4.5 D. (d) Brighter red refl ex in the right eye, indicative of an ocular deviation; suggests a strabismus (RET 30 PD)