Cakradatta (Cikitsasangraha) 76.16

76.16

akṣirogāya doṣāḥ syurvardhitotpīḍitadrutāḥ .
prātaḥ sāyaṃ ca tacchāntyai vyabhrake'to'ñjayetsadā .. 16 ..

the doṣas would become increased, aggravated, and liquefied, causing eye disease; / therefore, to pacify that, one should always apply collyrium in the morning and evening when the sky is clear of clouds. // 16